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Zhang B, Zhang D, Bao J, Han C, Song P, Xu W. Revealing the heterogeneous catalytic kinetics of PtRu nanocatalysts at the single particle level. Analyst 2024. [PMID: 39258315 DOI: 10.1039/d4an01017e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2024]
Abstract
Comparison of the structural features and catalytic performance of bimetallic nanocatalysts will help to develop a unified understanding of structure-reaction relationships. The single-molecule fluorescence technique was utilized to reveal the differences in catalytic kinetics among PtRu bimetallic nanocatalysts and Pt and Ru monometallic nanocatalysts at the single particle level. The results show that bimetallic nanocatalysts have higher apparent rate constants and desorption rate constants relative to monometallic nanocatalysts, which leads to their higher catalytic activity. At the single particle level, bimetallic nanocatalysts have a wider distribution of apparent rate constants, suggesting that bimetallic nanocatalysts have higher activity heterogeneity relative to monometallic nanocatalysts. By investigating the relationship between the reaction rate and the rate of dynamic activity fluctuations, it was found that spontaneous surface restructuring and reaction-induced surface restructuring of nanoparticles occurred. The surface of bimetallic nanoparticles restructured faster, which made the bimetallic nanocatalysts more active. These findings provide new insights into the design of highly active bimetallic nanocatalysts.
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Affiliation(s)
- Bowei Zhang
- State Key Laboratory of Electroanalytical Chemistry, Jilin Provincial Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China.
| | - Dezheng Zhang
- State Key Laboratory of Electroanalytical Chemistry, Jilin Provincial Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China.
| | - Jinpeng Bao
- State Key Laboratory of Electroanalytical Chemistry, Jilin Provincial Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Ce Han
- State Key Laboratory of Electroanalytical Chemistry, Jilin Provincial Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Ping Song
- State Key Laboratory of Electroanalytical Chemistry, Jilin Provincial Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Weilin Xu
- State Key Laboratory of Electroanalytical Chemistry, Jilin Provincial Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China.
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2
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Guo J, Yan Q, Zhang M, Fang J, Luo S, Xu J. PtRu mesoporous nanospheres as electrocatalysts with enhanced performance for oxidation of methanol. NANOSCALE ADVANCES 2024:d4na00210e. [PMID: 39170766 PMCID: PMC11334057 DOI: 10.1039/d4na00210e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 08/07/2024] [Indexed: 08/23/2024]
Abstract
Composition and morphology are crucial factors in the design of Pt-based catalysts with high performance, particularly in direct methanol fuel cells (DMFCs). Herein, PtRu mesoporous nanospheres (PtRu MNs) with tunable compositions were synthesized via a facile method and then deposited on a carbon support to act as electrocatalyst materials for the methanol oxidation reaction (MOR). Superior catalytic activity, better catalytic stability, and good tolerance to CO were achieved by the optimum PtRu (2 : 1) MNs/C catalyst compared with Pt MNs/C. The mass activity on PtRu (2 : 1) MNs/C reached 111.77 mA mgPt -1, which was approximately 6.45-fold higher than that of Pt MNs/C (17.33 mA mgPt -1). Meanwhile, PtRu (2 : 1) MNs/C retained much more current density (84.7%) than Pt MNs/C (17.7%) after 500 cycles. The improved catalytic performance is due to several factors, including the formation of a mesoporous nanostructure with abundant active sites and the favorable effects of the Ru species. This work provides guidance toward designing and fabricating effective Pt-based electrocatalysts for DMFC applications.
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Affiliation(s)
- Jiangbin Guo
- College of Chemical Engineering and Materials, Quanzhou Normal University Quanzhou Fujian 362000 P. R. China
| | - Qiyu Yan
- College of Chemical Engineering and Materials, Quanzhou Normal University Quanzhou Fujian 362000 P. R. China
| | - Man Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University Shanghai 200433 P. R. China
| | - Jun Fang
- College of Chemical Engineering and Materials, Quanzhou Normal University Quanzhou Fujian 362000 P. R. China
| | - Shuiyuan Luo
- College of Chemical Engineering and Materials, Quanzhou Normal University Quanzhou Fujian 362000 P. R. China
| | - Jing Xu
- College of Chemical Engineering and Materials, Quanzhou Normal University Quanzhou Fujian 362000 P. R. China
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3
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Li T, Liu Y, Huang Y, Yu Z, Huang L. Aqueous Synthesis of Au 10Pt 1 Nanorods Decorated with MnO 2 Nanosheets for the Enhanced Electrocatalytic Oxidation of Methanol. Molecules 2024; 29:3753. [PMID: 39202832 PMCID: PMC11357038 DOI: 10.3390/molecules29163753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2024] [Revised: 07/29/2024] [Accepted: 08/02/2024] [Indexed: 09/03/2024] Open
Abstract
Developing novel catalysts with high activity and high stability for the methanol oxidation reaction (MOR) is of great importance for the ever-broader applications of methanol fuel cells. Herein, we present a facile technique for synthesizing Au10Pt1@MnO2 catalysts using a wet chemical method and investigate their catalytic performance for the MOR. Notably, the Au10Pt1@MnO2-M composite demonstrated a significantly high peak mass activity of 15.52 A mg(Pt)-1, which is 35.3, 57.5, and 21.9 times greater than those of the Pt/C (0.44 A mg(Pt)-1), Pd/C (0.27 A mg(Pt)-1), and Au10Pt1 (0.71 A mg(Pt)-1) catalysts, respectively. Comparative analysis with commercial Pt/C and Pd/C catalysts, as well as Au10Pt1 HSNRs, revealed that the Au10Pt1@MnO2-M composite exhibited the lowest initial potential, the highest peak current density, and superior CO anti-poisoning capability. The results demonstrate that the introduction of MnO2 nanosheets, with excellent oxidation capability, not only significantly increases the reactive sites, but also promotes the reaction kinetics of the catalyst. Furthermore, the high surface area of the MnO2 nanosheets facilitates charge transfer and induces modifications in the electronic structure of the composite. This research provides a straightforward and effective strategy for the design of efficient electrocatalytic nanostructures for MOR applications.
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Affiliation(s)
- Ting Li
- Jiangxi Province Key Laboratory of Applied Optical Technology (2024SSY03051), School of Physical Science and Intelligent Education, Shangrao Normal University, Shangrao 334001, China
| | - Yidan Liu
- International Institute of Silk, College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yibin Huang
- Jiangxi Province Key Laboratory of Applied Optical Technology (2024SSY03051), School of Physical Science and Intelligent Education, Shangrao Normal University, Shangrao 334001, China
| | - Zhong Yu
- Jiangxi Province Key Laboratory of Applied Optical Technology (2024SSY03051), School of Physical Science and Intelligent Education, Shangrao Normal University, Shangrao 334001, China
| | - Lei Huang
- Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
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4
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Deng Y, Liu H, Lai L, She F, Liu F, Li M, Yu Z, Li J, Zhu D, Li H, Wei L, Chen Y. Platinum-Ruthenium Bimetallic Nanoparticle Catalysts Synthesized Via Direct Joule Heating for Methanol Fuel Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403967. [PMID: 39106223 DOI: 10.1002/smll.202403967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 07/21/2024] [Indexed: 08/09/2024]
Abstract
Platinum-Ruthenium (PtRu) bimetallic nanoparticles are promising catalysts for methanol oxidation reaction (MOR) required by direct methanol fuel cells. However, existing catalyst synthesis methods have difficulty controlling their composition and structures. Here, a direct Joule heating method to yield highly active and stable PtRu catalysts for MOR is shown. The optimized Joule heating condition at 1000 °C over 50 microseconds produces uniform PtRu nanoparticles (6.32 wt.% Pt and 2.97 wt% Ru) with an average size of 2.0 ± 0.5 nanometers supported on carbon black substrates. They have a large electrochemically active surface area (ECSA) of 239 m2 g-1 and a high ECSA normalized specific activity of 0.295 mA cm-2. They demonstrate a peak mass activity of 705.9 mA mgPt -1 for MOR, 2.8 times that of commercial 20 wt.% platinum/carbon catalysts, and much superior to PtRu catalysts obtained by standard hydrothermal synthesis. Theoretical calculation results indicate that the superior catalytic activity can be attributed to modified Pt sites in PtRu nanoparticles, enabling strong methanol adsorption and weak carbon monoxide binding. Further, the PtRu catalyst demonstrates excellent stability in two-electrode methanol fuel cell tests with 85.3% current density retention and minimum Pt surface oxidation after 24 h.
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Affiliation(s)
- Yeyu Deng
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, New South Wales, 2006, Australia
| | - Heng Liu
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai, 980-8577, Japan
| | - Leo Lai
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, New South Wales, 2006, Australia
| | - Fangxin She
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, New South Wales, 2006, Australia
| | - Fangzhou Liu
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, New South Wales, 2006, Australia
| | - Mohan Li
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, New South Wales, 2006, Australia
| | - Zixun Yu
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, New South Wales, 2006, Australia
| | - Jing Li
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, New South Wales, 2006, Australia
| | - Di Zhu
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, New South Wales, 2006, Australia
| | - Hao Li
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai, 980-8577, Japan
| | - Li Wei
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, New South Wales, 2006, Australia
| | - Yuan Chen
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, New South Wales, 2006, Australia
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5
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Zhang S, Yin L, Liu Q, Hai G, Du Y. Lanthanide-Induced Ligand Effect to Regulate the Electronic Structure of Platinum-Lanthanide Nanoalloys for Efficient Methanol Oxidation. ACS NANO 2024. [PMID: 39102015 DOI: 10.1021/acsnano.4c08156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/06/2024]
Abstract
The ligand effect in alloy catalysts is one of the decisive parameters of the catalytic performance. However, the strong interrelation between the ligand effect and the geometric effect of the active atom and its neighbors as well as the systematic alteration of the microenvironment of the active site makes the active mechanism unclear. Herein, Pt3Tm, Pt3Yb, and Pt3Lu with a cubic crystal system (Pm-3m) were selected. With the difference of Pt-Pt interatomic distance within 0.02 Å, we minimize the geometric effect to realize the disentanglement of the system. Through precise characterization, due to the low electronegativity of Ln (Ln = Tm, Yb, and Lu) and the ligand effect in the alloy, the electronic structure of Pt is continuously optimized, which improves the electrochemical methanol oxidation reaction (MOR) performance. The Ln electronegativity has a linear relationship with the MOR performance, and Pt3Yb/C achieves a high mass activity of up to 11.61 A mgPt-1, which is the highest value reported so far in Pt-based electrocatalysts. The results obtained in this study provide fundamental insights into the mechanism of ligand effects on the enhancement of electrochemical activity in rare-earth nanoalloys.
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Affiliation(s)
- Shuai Zhang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Smart Sensing Interdisciplinary Science Center, Haihe Laboratory of Sustainable Chemical Transformations, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin 300350, China
| | - Leilei Yin
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Smart Sensing Interdisciplinary Science Center, Haihe Laboratory of Sustainable Chemical Transformations, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin 300350, China
| | - Qian Liu
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Smart Sensing Interdisciplinary Science Center, Haihe Laboratory of Sustainable Chemical Transformations, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin 300350, China
| | - Guangtong Hai
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Yaping Du
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Smart Sensing Interdisciplinary Science Center, Haihe Laboratory of Sustainable Chemical Transformations, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin 300350, China
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6
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Lu Y, Liang L, Ye S, Chen Z, Zhao W, Cui Z. Pt 3Sn 0.5Mn 0.5 Intermetallic Electrocatalyst with Superior Stability for CO-Resilient Methanol Oxidation. ACS APPLIED MATERIALS & INTERFACES 2024; 16:35134-35142. [PMID: 38940277 DOI: 10.1021/acsami.4c05906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
The sluggish kinetics of methanol oxidation reaction (MOR) and poor long-term durability of catalysts are the main restrictions of the large-scale applications of direct methanol fuel cells (DMFCs). Herein, we demonstrated an inspirational ternary Pt3Sn0.5Mn0.5/DMC intermetallic catalyst that reached 4.78 mA cm-2 and 2.39 A mg-1Pt for methanol oxidation, which were 2.50/2.44 and 5.62/5.31 times that of commercial PtRu/C and Pt/C. After the durability test, Pt3Sn0.5Mn0.5/DMC presented a very low current density attenuation (38.5%), which was significantly lower than those for commercial PtRu/C catalyst (84.2%) and Pt/C (93.1%). Density functional theory (DFT) calculations revealed that the coregulation of Sn and Mn altered the surface electronic structure and endowed Pt3Sn0.5Mn0.5 with selective adsorption of Pt for CO and Sn for OH, which optimized the adsorption strength for intermediates and improved the reaction kinetics of MOR. Beyond offering an advanced electrocatalyst, this study provided a new point of view for the rational design of superior methanol oxidation catalysts for DMFC.
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Affiliation(s)
- Yongmei Lu
- Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang, Guizhou 550025, PR China
| | - Lecheng Liang
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, The Key Laboratory of New Energy Technology of Guangdong Universities, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, Guangdong 510641, PR China
| | - Shao Ye
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, The Key Laboratory of New Energy Technology of Guangdong Universities, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, Guangdong 510641, PR China
| | - Zheng Chen
- Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang, Guizhou 550025, PR China
| | - Weiyue Zhao
- Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang, Guizhou 550025, PR China
| | - Zhiming Cui
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, The Key Laboratory of New Energy Technology of Guangdong Universities, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, Guangdong 510641, PR China
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7
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Gong L, Zhu X, Nga TTT, Liu Q, Wu Y, Yang P, Zhou Y, Xiao Z, Dong CL, Fu X, Tao L, Wang S. Ultra-Low-Potential Methanol Oxidation on Single-Ir-Atom Catalyst. Angew Chem Int Ed Engl 2024; 63:e202404713. [PMID: 38670925 DOI: 10.1002/anie.202404713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/14/2024] [Accepted: 04/25/2024] [Indexed: 04/28/2024]
Abstract
Methanol oxidation plays a central role to implement sustainable energy economy, which is restricted by the sluggish reaction kinetics due to the multi-electron transfer process accompanied by numerous sequential intermediate. In this study, an efficient cascade methanol oxidation reaction is catalyzed by single-Ir-atom catalyst at ultra-low potential (<0.1 V) with the promotion of the thermal and electrochemical integration in a high temperature polymer electrolyte membrane electrolyzer. At the elevated temperature, the electron deficient Ir site with higher methanol affinity could spontaneous catalyze the CH3OH dehydrogenation to CO under the voltage, then the generated CO and H2 was electrochemically oxidized to CO2 and proton. However, the methanol cannot thermally decompose with the voltage absence, which confirm the indispensable of the coupling of thermal and electrochemical integration for the methanol oxidation. By assembling the methanol oxidation reaction with hydrogen evolution reaction with single-Ir-atom catalysts in the anode chamber, a max hydrogen production rate reaches 18 mol gIr -1 h-1, which is much greater than that of Ir nanoparticles and commercial Pt/C. This study also demonstrated the electrochemical methanol oxidation activity of the single atom catalysts, which broadens the renewable energy devices and the catalyst design by an integration concept.
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Affiliation(s)
- Liyuan Gong
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, the National Supercomputer Centers in Changsha, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, China
- College of Materials Science and Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518000, China
| | - Xiaorong Zhu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China
- Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China
| | - Ta Thi Thuy Nga
- Department of Physics, Tamkang University, Tamsui, 25137, Taiwan
| | - Qie Liu
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, the National Supercomputer Centers in Changsha, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, China
| | - Yujie Wu
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, the National Supercomputer Centers in Changsha, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, China
| | - Pupu Yang
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, the National Supercomputer Centers in Changsha, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, China
| | - Yangyang Zhou
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, the National Supercomputer Centers in Changsha, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, China
| | - Zhaohui Xiao
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, the National Supercomputer Centers in Changsha, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, China
| | - Chung-Li Dong
- Department of Physics, Tamkang University, Tamsui, 25137, Taiwan
| | - Xianzhu Fu
- College of Materials Science and Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518000, China
| | - Li Tao
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, the National Supercomputer Centers in Changsha, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, China
- Greater Bay Area Institute for Innovation, Hunan University, Guangzhou, 511300, China
| | - Shuangyin Wang
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, the National Supercomputer Centers in Changsha, Advanced Catalytic Engineering Research Center of the Ministry of Education, Hunan University, Changsha, 410082, China
- Greater Bay Area Institute for Innovation, Hunan University, Guangzhou, 511300, China
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8
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Hui L, Yan D, Zhang X, Wu H, Li J, Li Y. Halogen Tailoring of Platinum Electrocatalyst with High CO Tolerance for Methanol Oxidation Reaction. Angew Chem Int Ed Engl 2024:e202410413. [PMID: 38973379 DOI: 10.1002/anie.202410413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 07/01/2024] [Accepted: 07/01/2024] [Indexed: 07/09/2024]
Abstract
The catalytic activity of platinum for CO oxidation depends on the interaction of electron donation and back-donation at the platinum center. Here we demonstrate that the platinum bromine nanoparticles with electron-rich properties on bromine bonded with sp-C in graphdiyne (PtBr NPs/Br-GDY), which is formed by bromine ligand and constitutes an electrocatalyst with a high CO-resistant for methanol oxidation reaction (MOR). The catalyst showed peak mass activity for MOR as high as 10.4 A mgPt -1, which is 20.8 times higher than the 20 % Pt/C. The catalyst also showed robust long-term stability with slight current density decay after 100 hours at 35 mA cm-2. Structural characterization, experimental, and theoretical studies show that the electron donation from bromine makes the surface of platinum catalysts highly electron-rich, and can strengthen the adsorption of CO as well as enhance π back-donation of Pt to weaken the C-O bond to facilitate CO electrooxidation and enhance catalytic performance during MOR. The results highlight the importance of electron-rich structure among active sites in Pt-halogen catalysts and provide detailed insights into the new mechanism of CO electrooxidation to overcome CO poisoning at the Pt center on an orbital level.
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Affiliation(s)
- Lan Hui
- CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Dengxin Yan
- Laboratory for Chemical Technology, Ghent University, Technologiepark 125, 9052, Gent, Belgium
| | - Xueting Zhang
- CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Han Wu
- CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jinze Li
- CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yuliang Li
- CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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9
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Li S, Wang G, Lv H, Lin Z, Liang J, Liu X, Wang YG, Huang Y, Wang G, Li Q. Constructing Gradient Orbital Coupling to Induce Reactive Metal-Support Interaction in Pt-Carbide Electrocatalysts for Efficient Methanol Oxidation. J Am Chem Soc 2024; 146:17659-17668. [PMID: 38904433 DOI: 10.1021/jacs.4c00618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Reactive metal-support interaction (RMSI) is an emerging way to regulate the catalytic performance for supported metal catalysts. However, the induction of RMSI by the thermal reduction is often accompanied by the encapsulation effect on metals, which limits the mechanism research and applications of RMSI. In this work, a gradient orbital coupling construction strategy was successfully developed to induce RMSI in Pt-carbide system without a reductant, leading to the formation of L12-PtxM-MCy (M = Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W) intermetallic electrocatalysts. Density functional theory (DFT) calculations suggest that the gradient coupling of the d(M)-2p(C)-5d(Pt) orbital would induce the electron transfer from M to C covalent bonds to Pt NPs, which facilitates the formation of C vacancy (Cv) and the subsequent M migration (occurrence of RMSI). Moreover, the good correlation between the formation energy of Cv and the onset temperature of RMSI in Pt-MCx systems proves the key role of nonmetallic atomic vacancy formation for inducing RMSI. The developed L12-Pt3Ti-TiC catalyst exhibits excellent acidic methanol oxidation reaction activity, with mass activity of 2.36 A mgPt-1 in half-cell and a peak power density of 187.9 mW mgPt-1 in a direct methanol fuel cell, which is one of the best catalysts ever reported. DFT calculations reveal that L12-Pt3Ti-TiC favorably weakens *CO absorption compared to Pt-TiC due to the change of the absorption site from Pt to Ti, which accounts for the enhanced MOR performance.
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Affiliation(s)
- Shenzhou Li
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Gang Wang
- Department of Chemistry and Guangdong Provincial Key Laboratory of Catalysis Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Houfu Lv
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116000, China
- Suzhou Laboratory, Suzhou 215000, China
| | - Zijie Lin
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jiashun Liang
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xuan Liu
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yang-Gang Wang
- Department of Chemistry and Guangdong Provincial Key Laboratory of Catalysis Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yunhui Huang
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Guoxiong Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116000, China
| | - Qing Li
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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10
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Fan X, Chen W, Xie L, Liu X, Ding Y, Zhang L, Tang M, Liao Y, Yang Q, Fu XZ, Luo S, Luo JL. Surface-Enriched Single-Bi-Atoms Tailoring of Pt Nanorings for Direct Methanol Fuel Cells with Ultralow-Pt-Loading. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2313179. [PMID: 38353598 DOI: 10.1002/adma.202313179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/23/2024] [Indexed: 02/23/2024]
Abstract
Single-atom decorating of Pt emerges as a highly effective strategy to boost catalytic properties, which can trigger the most Pt active sites while blocking the smallest number of Pt atoms. However, the rational design and creation of high-density single-atoms on Pt surface remain as a huge challenge. Herein, a customized synthesis of surface-enriched single-Bi-atoms tailored Pt nanorings (SE-Bi1/Pt NRs) toward methanol oxidation is reported, which is guided by the density functional theory (DFT) calculations suggesting that a relatively higher density of Bi species on Pt surface can ensure a CO-free pathway and accelerate the kinetics of *HCOOH formation. Decorating Pt NRs with dense single-Bi-atoms is achieved by starting from PtBi intermetallic nanoplates (NPs) with intrinsically isolated Bi atoms and subsequent etching and annealing treatments. The SE-Bi1/Pt NRs exhibit a mass activity of 23.77 A mg-1 Pt toward methanol oxidation in alkaline electrolyte, which is 2.2 and 12.8 times higher than those of Pt-Bi NRs and Pt/C, respectively. This excellent activity endows the SE-Bi1/Pt NRs with a high likelihood to be used as a practical anodic electrocatalyst for direct methanol fuel cells (DMFCs) with high power density of 85.3 mW cm-2 and ultralow Pt loading of 0.39 mg cm-2.
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Affiliation(s)
- Xiaokun Fan
- Bay Area Center for Electron Microscopy, Songshan Lake Materials Laboratory, Dongguan, 523808, P. R. China
- Department of Chemistry, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, P. R. China
| | - Wen Chen
- Shenzhen Key Laboratory of Energy Electrocatalytic Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518055, P. R. China
| | - Lei Xie
- Shenzhen Key Laboratory of Energy Electrocatalytic Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518055, P. R. China
| | - Xianglong Liu
- Shenzhen Key Laboratory of Energy Electrocatalytic Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518055, P. R. China
- School of Physics, State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, P. R. China
| | - Yutian Ding
- Shenzhen Key Laboratory of Energy Electrocatalytic Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518055, P. R. China
| | - Long Zhang
- School of Physics, State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, P. R. China
| | - Min Tang
- Department of Chemistry, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, P. R. China
| | - Yujia Liao
- Department of Chemistry, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, P. R. China
| | - Qi Yang
- Department of Chemistry, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, P. R. China
| | - Xian-Zhu Fu
- Shenzhen Key Laboratory of Energy Electrocatalytic Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518055, P. R. China
| | - Shuiping Luo
- Shenzhen Key Laboratory of Energy Electrocatalytic Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518055, P. R. China
- Department of Chemistry, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, P. R. China
| | - Jing-Li Luo
- Shenzhen Key Laboratory of Energy Electrocatalytic Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518055, P. R. China
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11
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Lv Y, Liu P, Xue R, Guo Q, Ye J, Gao D, Jiang G, Zhao S, Xie L, Ren Y, Zhang P, Wang Y, Qin Y. Cascaded p-d Orbital Hybridization Interaction in Ultrathin High-Entropy Alloy Nanowires Boosts Complete Non-CO Pathway of Methanol Oxidation Reaction. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309813. [PMID: 38482730 PMCID: PMC11109631 DOI: 10.1002/advs.202309813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Indexed: 05/23/2024]
Abstract
Designing high efficiency platinum (Pt)-based catalysts for methanol oxidation reaction (MOR) with high "non-CO" pathway selectivity is strongly desired and remains a grand challenge. Herein, PtRuNiCoFeGaPbW HEA ultrathin nanowires (HEA-8 UNWs) are synthesized, featuring unique cascaded p-d orbital hybridization interaction by inducing dual p-block metals (Ga and Pb). In comparison with Pt/C, HEA-8 UNWs exhibit 15.0- and 4.2-times promotion of specific and mass activity for MOR. More importantly, electrochemical in situ FITR spectroscopy reveals that the production/adsorption of CO (CO*) intermediate is effectively avoided on HEA-8 UNWs, leading to the complete "non-CO" pathway for MOR. Theoretical calculations demonstrate the optimized electronic structure of HEA-8 UNWs can facilitates a lower energy barrier for the "non-CO" pathway in the MOR.
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Affiliation(s)
- Yipin Lv
- College of sciencesHenan Agricultural UniversityZhengzhouHenan450000P. R. China
- School of Chemistry and Chemical EngineeringUniversity of JinanJinan250022P. R. China
| | - Pei Liu
- College of sciencesHenan Agricultural UniversityZhengzhouHenan450000P. R. China
| | - Ruixin Xue
- School of Chemistry and Chemical EngineeringUniversity of JinanJinan250022P. R. China
| | - Qiudi Guo
- College of sciencesHenan Agricultural UniversityZhengzhouHenan450000P. R. China
| | - Jinyu Ye
- College of Chemistry and Chemical EngineeringXiamen University XiamenFujian361005P. R. China
| | - Daowei Gao
- School of Chemistry and Chemical EngineeringUniversity of JinanJinan250022P. R. China
| | - Guangce Jiang
- College of sciencesHenan Agricultural UniversityZhengzhouHenan450000P. R. China
| | - Shiju Zhao
- College of sciencesHenan Agricultural UniversityZhengzhouHenan450000P. R. China
| | - Lixia Xie
- College of sciencesHenan Agricultural UniversityZhengzhouHenan450000P. R. China
| | - Yunlai Ren
- College of sciencesHenan Agricultural UniversityZhengzhouHenan450000P. R. China
| | - Pengfang Zhang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell TechnologyLiaocheng UniversityLiaocheng252000P. R. China
| | - Yao Wang
- Key Laboratory of Synthetic and Biological ColloidsMinistry of EducationSchool of Chemical and Material EngineeringInternational Joint Research Center for Photoresponsive Molecules and MaterialsJiangnan UniversityWuxi214122P. R. China
| | - Yuchen Qin
- College of sciencesHenan Agricultural UniversityZhengzhouHenan450000P. R. China
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12
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Li S, Ajmal S, Zhou X, Lu M, Li X, Sun Z, Liu S, Zhu M, Li P. Mixed-Dimensional Partial Dealloyed PtCuBi/C as High-Performance Electrocatalysts for Methanol Oxidation with Enhanced CO Tolerance. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309226. [PMID: 38126680 DOI: 10.1002/smll.202309226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/30/2023] [Indexed: 12/23/2023]
Abstract
Developing efficient electrocatalysts for methanol oxidation reaction (MOR) is crucial in advancing the commercialization of direct methanol fuel cells (DMFCs). Herein, carbon-supported 0D/2D PtCuBi/C (0D/2D PtCuBi/C) catalysts are fabricated through a solvothermal method, followed by a partial electrochemical dealloying process to form a novel mixed-dimensional electrochemically dealloyed PtCuBi/C (0D/2D D-PtCuBi/C) catalysts. Benefiting from distinctive mixed-dimensional structure and composition, the as-obtained 0D/2D D-PtCuBi/C catalysts possess abundant accessible active sites. The introduction of Cu as a water-activating element weakens the COads, and oxophilic metal Bi facilitates the OHads, thereby enhancing its tolerance to CO poisoning and promoting MOR activity. The X-ray photoelectron spectroscopy (XPS) and X-ray absorption fine structure spectroscopy (XAFS) collectively reveal the electron transfer from Cu and Bi to Pt, the electron-enrichment effect induced by dealloying, and the strong interactions among Pt-M (Cu, Pt, and Bi) multi-active sites, which improve the tuning of the electronic structure and enhancement of electron transfer ability. Impressively, the optimized 0D/2D D-PtCuBi/C catalysts exhibit the superior mass activity (MA) of 17.68 A mgPt -1 for MOR, which is 14.86 times higher than that of commercial Pt/C. This study offers a proposed strategy for Pt-based alloy catalysts, enabling their use as efficient anodic materials in fuel cell applications.
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Affiliation(s)
- Sichen Li
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, 230601, P. R. China
| | - Sara Ajmal
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, 230601, P. R. China
| | - Xiaoxing Zhou
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, 230601, P. R. China
| | - Maoni Lu
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, 230601, P. R. China
| | - Xinghao Li
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, 230601, P. R. China
| | - Zhenjie Sun
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, 230601, P. R. China
| | - Shoujie Liu
- School of Materials Science and Engineering, Anhui University, Hefei, 230601, P. R. China
| | - Manzhou Zhu
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, 230601, P. R. China
| | - Peng Li
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, 230601, P. R. China
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13
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Sun Y, Zhang S, Sun S, Wu L, Tian J, Wu Y, Chen Y, Liu X. Cu Tailoring Pt Enables Branched-Structured Electrocatalysts with High Concave Surface Curvature Toward Efficient Methanol Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307970. [PMID: 38054785 DOI: 10.1002/smll.202307970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/12/2023] [Indexed: 12/07/2023]
Abstract
Surface engineering offers opportunities for the design and synthesis of Pt-based alloyed electrocatalysts with high mass activity and resistance to CO poisoning, which is of great significance for methanol electrooxidation. Surface curvature regulation may endow electrocatalysts with enhanced atomic utilization and abundance of unsaturated atoms; however, a reliable synthetic route for controlled construction of tailorable curved surface is still lacking. Here, a colloidal-chemical method to synthesize two types of PtCu branched-structured electrocatalysts, where the concave curvature can be customized is reported. These studies show that, among various synthesis parameters, the concentration of CuCl2·2H2O precursor is the key factor in manipulating the reaction kinetics and determining the concave surface curvature. Significantly, PtCu branched nanocrystals with long and sharp arms (PtCu BNCs-L), featuring a high concave surface curvature, exhibit remarkable activity and stability toward MOR, which is mainly attributed to advanced features of a highly concave surface and the synergistically bifunctional effect from introduced oxophilic Cu metal. In situ Raman spectroscopy and CO stripping test demonstrates weakened CO adsorption and accelerated CO removal on PtCu BNCs-L. This work highlights the importance of surface curvature, opening up an appealing route for the design and synthesis of advanced electrocatalysts with well-defined surface configurations.
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Affiliation(s)
- Yidan Sun
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, School of Energy Science and Engineering, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Shukang Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, School of Energy Science and Engineering, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Shangqing Sun
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, School of Energy Science and Engineering, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Liang Wu
- School of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, P. R. China
| | - Jie Tian
- Engineering and Materials Science Experiment Center, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Yuping Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, School of Energy Science and Engineering, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Yuhui Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, School of Energy Science and Engineering, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Xiaojing Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, School of Energy Science and Engineering, Nanjing Tech University, Nanjing, 211816, P. R. China
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14
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Yan W, Xing Q, Ren J, Feng H, Yu J, Liu H, Chen W, Wang K, Chen Y. Enhanced Activity of Small Pt Nanoparticles Decorated with High-Loading Single Fe─N 4 for Methanol Oxidation and Oxygen Reduction via the Assistive Active Sites Strategy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2308473. [PMID: 37972267 DOI: 10.1002/smll.202308473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 10/29/2023] [Indexed: 11/19/2023]
Abstract
Decorating platinum (Pt) with a single atom offers a promising approach to tailoring their catalytic activity. In this study, for the first time, an innovative assistive active sites (AAS) strategy is proposed to construct high-loading (3.46wt.%) single Fe─N4 as AAS, which are further hybridized with small Pt nanoparticles to enhance both oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR) activities. For ORR, the target catalyst (Pt/HFeSA-HCS) exhibits a higher mass activity (MA) of 0.98 A mgPt -1 and specific activity (SA) of 1.39 mA cmPt -2 at 0.90 V versus RHE. As for MOR, Pt/HFeSA-HCS shows exceptional MA (3.21 A mgPt -1) and SA (4.27 mA cmPt -2) at peak values, surpassing commercial Pt/C by 15.3 and 11.5 times, respectively. The underlying mechanism behind this AAS strategy is to find that in MOR, Fe─N4 promotes water dissociation, generating more *OH to accelerate the conversion of *CO to CO2. Meanwhile, in ORR, Fe─N4 acts as a competitor to adsorb *OH, weakening Pt─OH bonding and facilitating desorption of *OH on the Pt surface. Constructing AAS that can enhance dual functionality simultaneously can be seen as a successful "kill two birds with one stone" strategy.
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Affiliation(s)
- Wei Yan
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Qianli Xing
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Jianwei Ren
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Hao Feng
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Jinshi Yu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Hao Liu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Wenmiao Chen
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Kang Wang
- Department of Chemistry and Chemical Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Yanli Chen
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
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15
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Liang C, Zhao R, Chen T, Luo Y, Hu J, Qi P, Ding W. Recent Approaches for Cleaving the C─C Bond During Ethanol Electro-Oxidation Reaction. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308958. [PMID: 38342625 PMCID: PMC11022732 DOI: 10.1002/advs.202308958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/10/2024] [Indexed: 02/13/2024]
Abstract
Direct ethanol fuel cells (DEFCs) play an indispensable role in the cyclic utilization of carbon resources due to its high volumetric energy density, high efficiency, and environmental benign character. However, owing to the chemically stable carbon-carbon (C─C) bond of ethanol, its incomplete electrooxidation at the anode severely inhibits the energy and power density output of DEFCs. The efficiency of C─C bond cleaving on the state-of-the-art Pt or Pd catalysts is reported as low as 7.5%. Recently, tremendous efforts are devoted to this field, and some effective strategies are put forward to facilitate the cleavage of the C─C bond. It is the right time to summarize the major breakthroughs in ethanol electrooxidation reaction. In this review, some optimization strategies including constructing core-shell nanostructure with alloying effect, doping other metal atoms in Pt and Pd catalysts, engineering composite catalyst with interface synergism, introducing cascade catalytic sites, and so on, are systematically summarized. In addition, the catalytic mechanism as well as the correlations between the catalyst structure and catalytic efficiency are further discussed. Finally, the prevailing limitations and feasible improvement directions for ethanol electrooxidation are proposed.
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Affiliation(s)
- Chenjia Liang
- School of Chemistry and Chemical EngineeringNanjing UniversityNanjingJiangsu210023China
| | - Ruiyao Zhao
- School of Chemistry and Chemical EngineeringNanjing UniversityNanjingJiangsu210023China
| | - Teng Chen
- School of Chemistry and Chemical EngineeringNanjing UniversityNanjingJiangsu210023China
- Department of Aviation Oil and MaterialAir Force Logistics AcademyXuzhouJiangsu221000China
| | - Yi Luo
- Department of Aviation Oil and MaterialAir Force Logistics AcademyXuzhouJiangsu221000China
| | - Jianqiang Hu
- Department of Aviation Oil and MaterialAir Force Logistics AcademyXuzhouJiangsu221000China
| | - Ping Qi
- Department of Aviation Oil and MaterialAir Force Logistics AcademyXuzhouJiangsu221000China
| | - Weiping Ding
- School of Chemistry and Chemical EngineeringNanjing UniversityNanjingJiangsu210023China
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16
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Chen R, Wang Z, Chen S, Wang L, Wu W, Zhu Y, Cheng N. Optimizing Intermediate Adsorption on Pt Sites via Triple-Phase Interface Electronic Exchange for Methanol Oxidation. Inorg Chem 2024; 63:4364-4372. [PMID: 38373009 DOI: 10.1021/acs.inorgchem.3c04634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
For the most commonly applied platinum-based catalysts of direct methanol fuel cells, the adsorption ability toward reaction intermediates, including CO and OH, plays a vital role in their catalytic activity and antipoisoning in anodic methanol oxidation reaction (MOR). Herein, guided by a theoretical mechanism study, a favorable modulation of the electronic structure and intermediate adsorption energetics for Pt active sites is achieved by constructing the triple-phase interfacial structure between tin oxide (SnO2), platinum (Pt), and nitrogen-doped graphene (NG). From the strong electronic exchange at the triple-phase interface, the adsorption ability toward MOR reaction intermediates on Pt sites could be efficiently optimized, which not only inhibits the adsorption of CO* on active sites but also facilitates the adsorption of OH* to strip the poisoning species from the catalyst surface. Accordingly, the resulting catalyst delivers excellent catalytic activity and antipoisoning ability for MOR catalysis. The mass activity reaches 1098 mA mg-1Pt, 3.23 times of commercial Pt/C. Meanwhile, the initial potentials and main peak for CO oxidation are also located at a much lower potential (0.51 and 0.74 V) against commercial Pt/C (0.83 and 0.89 V).
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Affiliation(s)
- Runzhe Chen
- College of Materials Science and Engineering, Fuzhou University, Fuzhou ,Fujian 350108, China
- College of Materials and Chemical Engineering, Minjiang University, Fuzhou ,Fujian 350108, China
| | - Zichen Wang
- College of Materials Science and Engineering, Fuzhou University, Fuzhou ,Fujian 350108, China
| | - Suhao Chen
- College of Materials Science and Engineering, Fuzhou University, Fuzhou ,Fujian 350108, China
| | - Liang Wang
- College of Materials Science and Engineering, Fuzhou University, Fuzhou ,Fujian 350108, China
| | - Wei Wu
- College of Materials Science and Engineering, Fuzhou University, Fuzhou ,Fujian 350108, China
| | - Yu Zhu
- College of Materials Science and Engineering, Fuzhou University, Fuzhou ,Fujian 350108, China
| | - Niancai Cheng
- College of Materials Science and Engineering, Fuzhou University, Fuzhou ,Fujian 350108, China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China
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17
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Huynh TT, Huynh Q, Nguyen QV, Pham HQ. Lattice Strain and Composition Effects on the Methanol Oxidation Performance of Platinum-Ruthenium-Nickel Ternary Nanocatalysts. Inorg Chem 2023. [PMID: 37990435 DOI: 10.1021/acs.inorgchem.3c03518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
Ternary Pt-based structures are a positive progress in addressing the disadvantages of monometallic and bimetallic Pt-based alloys for the electrochemical oxidation process of simple alcohols, which is a vital half-reaction in fuel cell technologies. We herein report a facile NaBH4-assisted ethylene glycol reduction process for fabricating a series of nanosized PtRuNi ternary alloys to explore the relationship between physicochemical properties and electrocatalytic behaviors for the acidic methanol oxidation reaction (MOR). Owing to a balance between lattice strain and synergistic effects, the Pt60Ru20Ni20/C electrocatalyst shows the highest MOR efficiency with the mass activity/specific activity of 844.48 mA mgMetal-1/1.93 mA cm-2, being a 1.94 and 2.38 times increase compared to those of the PtRu catalyst, respectively. Also, the Pt60Ru20Ni20/C catalyst possesses superior CO-tolerance and durability in strongly acidic electrolytes. This work suggests that optimizing the surface strain and electronic effects can boost the overall MOR efficiency of multicomponent Pt-based materials, which can help to further develop next-generation catalysts for energy conversion-related technologies.
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Affiliation(s)
- Tai Thien Huynh
- Ho Chi Minh City University of Natural Resources and Environment (HCMUNRE), Ho Chi Minh City 700000, Viet Nam
| | - Quyen Huynh
- Ho Chi Minh City University of Natural Resources and Environment (HCMUNRE), Ho Chi Minh City 700000, Viet Nam
| | - Qui Van Nguyen
- Ho Chi Minh City University of Natural Resources and Environment (HCMUNRE), Ho Chi Minh City 700000, Viet Nam
| | - Hau Quoc Pham
- Future Materials & Devices Lab., Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City 700000, Viet Nam
- The Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang 550000, Viet Nam
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18
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Long D, Ping X, Ni J, Chen F, Chen S, Wei Z, Guo L, Zheng J. Strengthening Pt/WO x interfacial interactions to increase the CO tolerance of Pt for hydrogen oxidation reaction. Chem Commun (Camb) 2023; 59:13583-13586. [PMID: 37861737 DOI: 10.1039/d3cc03990k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
Here, the modulation of the Pt electronic structure by the formation of an amorphous WOx overlayer on Pt nanoparticles is proposed. The resulting Pt/WOx@NC electrode shows exceptional CO oxidation potential (0.24 V vs. RHE) in aqueous test, and the corresponding membrane electrode assembly (MEA) steadily generates power in fuel cells fed with H2 gas containing 1000 ppm CO.
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Affiliation(s)
- Daojun Long
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China.
- State Key Laboratory of Advanced Chemical Power Sources (SKL-ACPS), Chongqing, China
| | - Xinyu Ping
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China.
- State Key Laboratory of Advanced Chemical Power Sources (SKL-ACPS), Chongqing, China
| | - Jingtian Ni
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China.
- State Key Laboratory of Advanced Chemical Power Sources (SKL-ACPS), Chongqing, China
| | - Fadong Chen
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China.
- State Key Laboratory of Advanced Chemical Power Sources (SKL-ACPS), Chongqing, China
| | - Siguo Chen
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China.
- State Key Laboratory of Advanced Chemical Power Sources (SKL-ACPS), Chongqing, China
| | - Zidong Wei
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China.
- State Key Laboratory of Advanced Chemical Power Sources (SKL-ACPS), Chongqing, China
| | - Lin Guo
- State Key Laboratory of Catalytic Materials and Reaction Engineering, SINOPEC Research Institute of Petroleum Processing Co, Beijing, China.
| | - Jinyu Zheng
- State Key Laboratory of Catalytic Materials and Reaction Engineering, SINOPEC Research Institute of Petroleum Processing Co, Beijing, China.
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19
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Yang X, Ouyang B, Zhao L, Shen Q, Chen G, Sun Y, Li C, Xu K. Ultrathin Rh Nanosheets with Rich Grain Boundaries for Efficient Hydrogen Oxidation Electrocatalysis. J Am Chem Soc 2023. [PMID: 37949810 DOI: 10.1021/jacs.3c10465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Two-dimensional (2D) Pt-group ultrathin nanosheets (NSs) are promising advanced electrocatalysts for energy-related catalytic reactions. However, improving the electrocatalytic activity of 2D Pt-group NSs through the addition of abundant grain boundaries (GBs) and understanding the underlying formation mechanism remain significant challenges. Herein, we report the controllable synthesis of a series of Rh-based nanocrystals (e.g., Rh nanoparticles, Rh NSs, and Rh NSs with GBs) through a CO-mediated kinetic control synthesis route. In light of the 2D NSs' structural advantages and GB modification, the Rh NSs with rich GBs exhibit an enhanced electrocatalytic activity compared to pure Rh NSs and commercial Pt/C toward the hydrogen oxidation reaction (HOR) in alkaline media. Both experimental results and theoretical computations corroborate that the GBs in the Rh NSs have the capacity to ameliorate the adsorption free energy of reaction intermediates during the HOR, thus resulting in outstanding HOR catalytic performance. Our work offers novel perspectives in the realm of developing sophisticated 2D Pt-group metal electrocatalysts with rich GBs for the energy conversion field.
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Affiliation(s)
- Xiaodong Yang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, People's Republic of China
| | - Bo Ouyang
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - Lei Zhao
- School of Chemistry and Chemical Engineering, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, People's Republic of China
| | - Qi Shen
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, People's Republic of China
| | - Guozhu Chen
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, People's Republic of China
| | - Yiqiang Sun
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, People's Republic of China
| | - Cuncheng Li
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, People's Republic of China
| | - Kun Xu
- School of Chemistry and Chemical Engineering, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei 230601, People's Republic of China
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20
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Li Y, Li H, Zhao Y, Ji D, Guo P, Li G, Zhao X. Insights on the Roles of Nitrogen Configuration in Enhancing the Performance of Electrocatalytic Methanol Oxidation over Pt Nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303065. [PMID: 37480183 DOI: 10.1002/smll.202303065] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/03/2023] [Indexed: 07/23/2023]
Abstract
Stabilization of the Pt in N-doped carbon materials is an effective method to improve the performance of electrocatalytic methanol oxidation reaction (MOR). Nevertheless, the roles of different N configurations (pyridinic N, pyrrolic N, and graphitic N) toward the electrochemical performance of Pt-based catalysts remain unclear. Herein, Density Functional Theory calculations are adopted to elucidate the synergistic promotion of MOR by different N-configurations with Pt nanoparticles (NPs). Guided by the theoretical study, a series of MOR electrocatalysts with different ratios of pyridinic N and pyrrolic N (denoted as Pt/N-CNT-X (500, 600, 700, 800, and 900)) are designed and synthesized. Surprisingly, the electrocatalytic activity of Pt/N-CNT-600 with a suitable ratio of pyrrolic-N and pyridinic-N for MOR reaches 2394.7 mA mg-1 Pt and 5515.8 mA mg-1 Pt in acidic and alkaline media, respectively, which are superior to the Pt/CNTs, commercial Pt/C, and the ever-reported Pt-based electrocatalysts. The strong metal-support interaction induced by the N-doping is the crucial reason for the superior electrocatalytic performance. More importantly, the ability of pyrrolic-N and pyridinic-N in promoting the adsorption and oxidation of CH3 OH and the oxidation of CO* is substantiated for the first time in methanol oxidation. This work provides new insights on the design of efficient electrocatalysts for MOR.
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Affiliation(s)
- Yanru Li
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730050, China
| | - Hongwei Li
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730050, China
| | - Yan Zhao
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730050, China
| | - Dong Ji
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730050, China
| | - Peng Guo
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730050, China
| | - Guixian Li
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730050, China
| | - Xinhong Zhao
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730050, China
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21
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Wang X, Yi ZY, Wang YQ, Wang D, Wan LJ. Unraveling the Dynamic Processes of Methanol Electrooxidation at Isolated Rhodium Sites by In Situ Electrochemical Scanning Tunneling Microscopy. J Phys Chem Lett 2023; 14:9448-9455. [PMID: 37830902 DOI: 10.1021/acs.jpclett.3c02514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Materials with isolated single-atom Rh-N4 sites are emerging as promising and compelling catalysts for methanol electrooxidation. Herein, we carried out an in situ electrochemical scanning tunneling microscopy (ECSTM) investigation of the dynamic processes of methanol absorption and catalytic conversion in the rhodium octaethylporphyrin (RhOEP)-catalyzed methanol oxidation reaction at the molecular scale. The high-contrast RhOEP-CH3OH complex formed by methanol adsorption was visualized distinctly in the STM images. The Rh-C adsorption configuration of methanol on isolated rhodium sites was identified on the basis of a series of control experiments and theoretical simulation. The adsorption energy of methanol on RhOEP was obtained from quantitative analysis. In situ ECSTM experiments present an explicit description of the transformation of the intermediate species in the catalytic process. By qualitatively evaluating the rate constants of different stages in the reaction at the microscopic level, we considered the CO transformation/desorption as the critical step for determining the reaction dynamics. Methanol adsorption was found to be correlated with RhOEP oxidation in the initial stage of the reaction, and the dynamic information was revealed unambiguously by in situ potential step experiments. This work provides microscopic results for the catalytic mechanism of Rh-N4 sites for methanol electrooxidation, which is instructive for the rational design of the high-performance catalyst.
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Affiliation(s)
- Xiang Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhen-Yu Yi
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Qi Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dong Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li-Jun Wan
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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22
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Liang J, Cheng H, Zhao B, Hu Q, Xing Z, Zhang Y, Niu L. Boosting the Methanol Oxidation Reaction Activity of Pt-Ru Clusters via Resonance Energy Transfer. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302149. [PMID: 37194975 DOI: 10.1002/smll.202302149] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/18/2023] [Indexed: 05/18/2023]
Abstract
The sluggish kinetics of the methanol oxidation reaction (MOR) with PtRu electrocatalyst severely hinder the commercialization of direct methanol fuel cells (DMFCs). The electronic structure of Pt is of significant importance for its catalytic activity. Herein, it is reported that low-cost fluorescent carbon dots (CDs) can regulate the behavior of the D-band center of Pt in PtRu clusters through resonance energy transfer (RET), resulting in a significant increase in the catalytic activity of the catalyst participating in methanol electrooxidation. For the first time, the bifunction of RET is used to provide unique strategy for fabrication of PtRu electrocatalysts, not only tunes the electronic structure of metals, but also provides an important role in anchoring metal clusters. Density functional theory calculations further prove that charge transfer between CDs and Pt promotes the dehydrogenation of methanol on PtRu catalysts and reduces the free energy barrier of the reaction associated with the oxidation of CO* to CO2 . This helps to improve the catalytic activity of the systems participating in MOR. The performance of the best sample is 2.76 times higher than that of commercial PtRu/C (213.0 vs 76.99 mW cm - 2 mg Pt - 1 ${\rm{mW\ cm}}^{ - 2}{\rm{\ mg}}_{{\rm{Pt}}}^{ - 1}$ ). The fabricated system can be potentially used for the efficient fabrication of DMFCs.
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Affiliation(s)
- Jiahui Liang
- Guangzhou Key Laboratory of Sensing Materials & Devices /Center for Advanced Analytical Science/School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, No. 230 Wai Huan Xi Road, Guangzhou, 510006, P. R. China
| | - Heyun Cheng
- Guangzhou Key Laboratory of Sensing Materials & Devices /Center for Advanced Analytical Science/School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, No. 230 Wai Huan Xi Road, Guangzhou, 510006, P. R. China
| | - Bolin Zhao
- Guangzhou Key Laboratory of Sensing Materials & Devices /Center for Advanced Analytical Science/School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, No. 230 Wai Huan Xi Road, Guangzhou, 510006, P. R. China
| | - Qiong Hu
- Guangzhou Key Laboratory of Sensing Materials & Devices /Center for Advanced Analytical Science/School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, No. 230 Wai Huan Xi Road, Guangzhou, 510006, P. R. China
| | - Zihao Xing
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Yuwei Zhang
- Guangzhou Key Laboratory of Sensing Materials & Devices /Center for Advanced Analytical Science/School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, No. 230 Wai Huan Xi Road, Guangzhou, 510006, P. R. China
| | - Li Niu
- Guangzhou Key Laboratory of Sensing Materials & Devices /Center for Advanced Analytical Science/School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou Higher Education Mega Center, No. 230 Wai Huan Xi Road, Guangzhou, 510006, P. R. China
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23
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Wang T, Zhao S, Ji Z, Hao L, Umer S, Liu J, Hu W. Fe-Ni Diatomic Sites Coupled with Pt Clusters to Boost Methanol Electrooxidation via Free Radical Relaying. CHEMSUSCHEM 2023; 16:e202300411. [PMID: 37186222 DOI: 10.1002/cssc.202300411] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/20/2023] [Accepted: 04/26/2023] [Indexed: 05/17/2023]
Abstract
Pt-based catalysts for direct methanol fuel cells (DMFCs) are still confronted with the challenge of over-oxidation of Pt and poisoning effect of intermediates; therefore, a spatial relay strategy was adopted to overcome these issues. Herein, Pt clusters were creatively fixed on the N-doped carbon matrix with rich Fe-Ni diatoms, which can provide independent reaction sites for methanol oxidation reaction (MOR) and enhance the catalytic activity due to the electronic regulation effect between Pt cluster and atomic-level metal sites. The optimized Pt/FeNi-NC catalyst shows MOR electrocatalytic activity of 2.816 A mgPt -1 , 2.6 times that of Pt/C (1.115 A mgPt -1 ). Experiments combined with DFT study reveal that Fe-Ni diatoms and Pt clusters take charge of hydroxyl radical (⋅OH) generation and methanol activation, respectively. The free radical relaying of ⋅OH could prevent the over-oxidation of Pt. Meanwhile, ⋅OH from Fe-Ni sites accelerates the elimination of intermediates, thus improving the durability of catalysts.
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Affiliation(s)
- Tianqi Wang
- Tianjin Key Laboratory of Molecular Optoelectronics Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Shenghao Zhao
- Tianjin Key Laboratory of Molecular Optoelectronics Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Zhijiao Ji
- Tianjin Key Laboratory of Molecular Optoelectronics Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Lu Hao
- Tianjin Key Laboratory of Molecular Optoelectronics Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Sundus Umer
- Tianjin Key Laboratory of Molecular Optoelectronics Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Jia Liu
- Tianjin Key Laboratory of Molecular Optoelectronics Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
- Yulin University, Yulin, 719000, Shanxi Province, P. R. China
| | - Wenping Hu
- Tianjin Key Laboratory of Molecular Optoelectronics Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, P. R. China
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24
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Shi Y, Zhang L, Zhou H, Liu R, Nie S, Ye G, Wu F, Niu W, Han JL, Wang AJ. Te-induced fabrication of Pt 3PdTe 0.2 alloy nanocages by the self-diffusion of Pd atoms with unique MOR electrocatalytic performance. NANOSCALE ADVANCES 2023; 5:2804-2812. [PMID: 37205282 PMCID: PMC10187029 DOI: 10.1039/d2na00576j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 04/05/2023] [Indexed: 05/21/2023]
Abstract
The key to the application of direct methanol fuel cells is to improve the activity and durability of Pt-based catalysts. Based on the upshift of the d-band centre and exposure to more Pt active sites, Pt3PdTe0.2 catalysts with significantly enhanced electrocatalytic performance for the methanol oxidation reaction (MOR) were designed in this study. A series of different Pt3PdTex (x = 0.2, 0.35, and 0.4) alloy nanocages with hollow and hierarchical structures were synthesized using cubic Pd nanoparticles as sacrificial templates and PtCl62- and TeO32- metal precursors as oxidative etching agents. The Pd nanocubes were oxidized into an ionic complex, which was further co-reduced with Pt and Te precursors by reducing agents to form the hollow Pt3PdTex alloy nanocages with a face-centred cubic lattice. The sizes of the nanocages were around 30-40 nm, which were larger than the Pd templates (18 nm) and the thicknesses of the walls were 7-9 nm. The Pt3PdTe0.2 alloy nanocages exhibited the highest catalytic activities and stabilities toward the MOR after electrochemical activation in sulfuric acid solution. CO-stripping tests suggested the enhanced CO-tolerant ability due to the doping of Te. The specific activity of Pt3PdTe0.2 for the MOR reached 2.71 mA cm-2 in acidic conditions, which was higher than those of Pd@Pt core-shell and PtPd1.5 alloy nanoparticles and commercial Pt/C. A DMFC with Pt3PdTe0.2 as the anodic catalyst output a higher power density by 2.6 times than that of commercial Pt/C, demonstrating its practicable application in clean energy conversions. Density functional theory (DFT) confirmed that the alloyed Te atoms altered the electron distributions of Pt3PdTe0.2, which could lower the Gibbs free energy of the rate-determining methanol dehydrogenation step and greatly improve the MOR catalytic activity and durability.
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Affiliation(s)
- Yuhe Shi
- School of Science, Harbin Institute of Technology Shenzhen 518055 China
| | - Ling Zhang
- School of Science, Harbin Institute of Technology Shenzhen 518055 China
| | - Huiwen Zhou
- School of Science, Harbin Institute of Technology Shenzhen 518055 China
| | - Ruanshan Liu
- School of Science, Harbin Institute of Technology Shenzhen 518055 China
| | - Shichen Nie
- Shandong Hynar Water Environmental Protection Co., Ltd Heze 274400 China
| | - Guojie Ye
- Hynar Water Group Co., Ltd Shenzhen 518052 China
| | - Fengxia Wu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 China
- University of Science and Technology of China Anhui 230026 China
| | - Wenxin Niu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 China
- University of Science and Technology of China Anhui 230026 China
| | - Jing Long Han
- School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen 518055 China
- State Key Laboratory of Urban Water Resource and Environment (Shenzhen), Harbin Institute of Technology Shenzhen 518055 China
| | - Ai Jie Wang
- School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen 518055 China
- State Key Laboratory of Urban Water Resource and Environment (Shenzhen), Harbin Institute of Technology Shenzhen 518055 China
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25
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Khan M, Abdullah MI, Samad A, Shao Z, Mushiana T, Akhtar A, Hameed A, Zhang N, Schwingenschlögl U, Ma M. Inhibitor and Activator: Dual Role of Subsurface Sulfide Enables Selective and Efficient Electro-Oxidation of Methanol to Formate on CuS@CuO Core-Shell Nanosheet Arrays. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2205499. [PMID: 37009999 DOI: 10.1002/smll.202205499] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 02/21/2023] [Indexed: 06/19/2023]
Abstract
Selective electro-oxidation of aliphatic alcohols into value-added carboxylates at lower potentials than that of the oxygen evolution reaction (OER) is an environmentally and economically desirable anode reaction for clean energy storage and conversion technologies. However, it is challenging to achieve both high selectivity and high activity of the catalysts for the electro-oxidation of alcohols, such as the methanol oxidation reaction (MOR). Herein, a monolithic CuS@CuO/copper-foam electrode for the MOR with superior catalytic activity and almost 100% selectivity for formate is reported. In the core-shell CuS@CuO nanosheet arrays, the surface CuO directly catalyzes MOR, while the subsurface sulfide not only serves as an inhibitor to attenuate the oxidative power of the surface CuO to achieve selective oxidation of methanol to formate and prevent over-oxidation of formate to CO2 but also serves as an activator to form more surface O defects as active sites and enhances the methanol adsorption and charge transfer to achieve superior catalytic activity. CuS@CuO/copper-foam electrodes can be prepared on a large scale by electro-oxidation of copper-foam at ambient conditions and can be readily utilized in clean energy technologies.
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Affiliation(s)
- Mustafa Khan
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Muhammad Imran Abdullah
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
- Department of Chemistry, Government College University, Lahore, 54000, Pakistan
| | - Abdus Samad
- Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Zhiang Shao
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Talifhani Mushiana
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Asma Akhtar
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Asima Hameed
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
- University of Central Punjab, Lahore, 54000, Pakistan
| | - Ning Zhang
- School of Biology, Food and Environment, Hefei University, Hefei, Anhui, 230022, China
| | - Udo Schwingenschlögl
- Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Mingming Ma
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
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26
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Abstract
A significant challenge in the development of functional materials is understanding the growth and transformations of anisotropic colloidal metal nanocrystals. Theory and simulations can aid in the development and understanding of anisotropic nanocrystal syntheses. The focus of this review is on how results from first-principles calculations and classical techniques, such as Monte Carlo and molecular dynamics simulations, have been integrated into multiscale theoretical predictions useful in understanding shape-selective nanocrystal syntheses. Also, examples are discussed in which machine learning has been useful in this field. There are many areas at the frontier in condensed matter theory and simulation that are or could be beneficial in this area and these prospects for future progress are discussed.
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Affiliation(s)
- Kristen A Fichthorn
- Department of Chemical Engineering and Department of Physics The Pennsylvania State University University Park, Pennsylvania 16803 United States
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27
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Kim J, Medvedeva X, Medvedev JJ, Bae C, Kim J, Klinkova A. The effect of tensile strain in Pd-Ni core-shell nanocubes with tuneable shell thickness on urea electrolysis selectivity. NANOSCALE 2023; 15:5181-5187. [PMID: 36722922 DOI: 10.1039/d2nr05950a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Expanding our understanding of the structure-performance relationship in nanoscale electrocatalysts for urea electrolysis is crucial for efficient urea waste treatment and concomitant cathodic hydrogen production or CO2 reduction. Here, we elucidate the effect of the lattice strain in Pd-Ni core-shell nanocubes on the dominance of urea overoxidation pathway.
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Affiliation(s)
- Jeongeon Kim
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada.
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, South Korea.
| | - Xenia Medvedeva
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada.
| | - Jury J Medvedev
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada.
| | - Cheongwon Bae
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, South Korea.
| | - Juyeong Kim
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, South Korea.
| | - Anna Klinkova
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada.
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28
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Liu Y, Wu J, Zhang Y, Jin X, Li J, Xi X, Deng Y, Jiao S, Lei Z, Li X, Cao R. Ensemble Effect of Ruthenium Single-Atom and Nanoparticle Catalysts for Efficient Hydrogen Evolution in Neutral Media. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 36905349 DOI: 10.1021/acsami.2c20863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Hydrogen evolution reaction (HER) plays a key role in electrochemical water splitting, which is a sustainable way for hydrogen production. The kinetics of HER is sluggish in neutral media that requires noble metal catalysts to alleviate energy consumption during the HER process. Here, we present a catalyst comprising a ruthenium single atom (Ru1) and nanoparticle (Run) loaded on the nitrogen-doped carbon substrate (Ru1-Run/CN), which exhibits excellent activity and superior durability for neutral HER. Benefiting from the synergistic effect between single atoms and nanoparticles in the Ru1-Run/CN, the catalyst exhibits a very low overpotential down to 32 mV at a current density of 10 mA cm-2 while maintaining excellent stability up to 700 h at a current density of 20 mA cm-2 during the long-term test. Computational calculations reveal that, in the Ru1-Run/CN catalyst, the existence of Ru nanoparticles affects the interactions between Ru single-atom sites and reactants and thus improves the catalytic activity of HER. This work highlights the ensemble effect of electrocatalysts for HER and could shed light on the rational design of efficient catalysts for other multistep electrochemical reactions.
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Affiliation(s)
- Yang Liu
- Hefei National Laboratory for Physical Science at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Jianghua Wu
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Yuchen Zhang
- Hefei National Laboratory for Physical Science at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Xu Jin
- Research Center of New Energy, Research Institute of Petroleum Exploration and Development (RIPED), PetroChina, Beijing 100083, China
| | - Jianming Li
- Research Center of New Energy, Research Institute of Petroleum Exploration and Development (RIPED), PetroChina, Beijing 100083, China
| | - Xiaoke Xi
- Hefei National Laboratory for Physical Science at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Yu Deng
- National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Shuhong Jiao
- Hefei National Laboratory for Physical Science at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Zhanwu Lei
- Hefei National Laboratory for Physical Science at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Xiyu Li
- Songshan Lake Materials Laboratory, Dongguan 523808, China
| | - Ruiguo Cao
- Hefei National Laboratory for Physical Science at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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Bu L, Liang J, Ning F, Huang J, Huang B, Sun M, Zhan C, Ma Y, Zhou X, Li Q, Huang X. Low-Coordination Trimetallic PtFeCo Nanosaws for Practical Fuel Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2208672. [PMID: 36574979 DOI: 10.1002/adma.202208672] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 12/19/2022] [Indexed: 06/17/2023]
Abstract
Developing high-performance catalysts for fuel cell catalysis is the most critical and challenging step for the commercialization of fuel cell technology. Here 1D trimetallic platinum-iron-cobalt nanosaws (Pt3 FeCo NSs) with low-coordination features are designed as efficient bifunctional electrocatalysts for practical fuel cell catalysis. The oxygen reduction reaction (ORR) activity of Pt3 FeCo NSs (10.62 mA cm-2 and 4.66 A mg-1 Pt at 0.90 V) is more than 25-folds higher than that of the commercial Pt/C, even after 30 000 voltage cycles. Density functional theory calculations reveal that the strong inter-d-orbital electron transfer minimizes the ORR barrier with higher selectivity at robust valence states. The volcano correlation between the intrinsic structure featured with low-coordination Pt-sites and corresponding electronic activities is discovered, which guarantees high ORR activities. The Pt3 FeCo NSs located in the membrane electrode assembly (MEA) also achieve very high peak power density (1800.6 mW cm-2 ) and competitive specific/mass activities (1.79 mA cm-2 and 0.79 A mg-1 Pt at 0.90 ViR-free cell voltage) as well as a long-term lifetime in specific H2 O2 medium for proton-exchange-membrane fuel cells, ranking top electrocatalysts reported to date for MEA. This work represents a class of multimetallic Pt-based nanocatalysts for practical fuel cells and beyond.
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Affiliation(s)
- Lingzheng Bu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Fujian, 361005, P. R. China
- College of Energy, Xiamen University, Fujian, 361102, P. R. China
| | - Jiashun Liang
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Hubei, 430074, P. R. China
| | - Fandi Ning
- Division of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS), Jiangsu, 215123, P. R. China
| | - Ju Huang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, P. R. China
| | - Bolong Huang
- Department of Applied Biology and Chemical Technology, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, 999077, P. R. China
- Research Centre for Carbon-Strategic Catalysis, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, 999077, China
| | - Mingzi Sun
- Department of Applied Biology and Chemical Technology, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Changhong Zhan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Fujian, 361005, P. R. China
| | - Yanhang Ma
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, P. R. China
| | - Xiaochun Zhou
- Division of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences (CAS), Jiangsu, 215123, P. R. China
| | - Qing Li
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Hubei, 430074, P. R. China
| | - Xiaoqing Huang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Fujian, 361005, P. R. China
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Sharma V, Bhullar V, Saxena V, Debnath AK, Mahajan A. Modulation of Surface Ti-O Species in 2D-Ti 3C 2T X MXene for Developing a Highly Efficient Electrocatalyst for Hydrogen Evolution and Methanol Oxidation Reactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:2995-3005. [PMID: 36786558 DOI: 10.1021/acs.langmuir.2c02845] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Developing cost-effective and earth-abundant noble-metal-free electrocatalysts is imperative for the imminent electrochemical society. Two-dimensional Ti3C2TX (MXene) exhibits tunable properties with high electrical conductivity and a large specific surface area, which improve its electrochemical performance. Herein, the low-temperature annealing method is used to enrich MXene with a maximum number of Ti-O terminals without formation of titanium dioxide (TiO2) under neutral pH conditions. MXene annealed at 200 °C is found to have a large number of Ti-O termination groups, resulting in a large electrochemically active surface area and increased active sites (-O termination groups) and hence excellent electrocatalytic performance compared to other samples as well as previous reported work. The optimized sample is found to show the lowest overpotential value of 0.07 V at 10 mA cm-2 and a Tafel slope of 0.15 V dec-1 toward the hydrogen evolution reaction (HER), whereas for the methanol oxidation reaction (MOR), the current density is 18.08 mA cm-2, and the onset potential is -0.51 V. In addition, it also shows long-term stability and durability toward HER as well as MOR.
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Affiliation(s)
- Vaishali Sharma
- Department of Physics, Guru Nanak Dev University, Amritsar 143005, India
| | - Viplove Bhullar
- Department of Physics, Guru Nanak Dev University, Amritsar 143005, India
| | - Vibha Saxena
- Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Anil Krishna Debnath
- Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Aman Mahajan
- Department of Physics, Guru Nanak Dev University, Amritsar 143005, India
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31
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Li S, Jin H, Wang Y. Recent progress on the synthesis of metal alloy nanowires as electrocatalysts. NANOSCALE 2023; 15:2488-2515. [PMID: 36722933 DOI: 10.1039/d2nr06090f] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Benefiting from both one-dimensional (1D) morphology and alloy composition, metal alloy nanowires have been exploited as advanced electrocatalysts in various electrochemical processes. In this review, the synthesis approaches for metal alloy nanowires are classified into two categories: direct syntheses and syntheses based on preformed 1D nanostructures. Ligand systems that are of critical importance to the formation of alloy nanowires are summarized and reviewed, together with the strategies imposed to achieve the co-reduction of different metals. Meanwhile, different scenarios that form alloy nanowires from pre-synthesized 1D nanostructures are compared and contrasted. In addition, the characterization and electrocatalytic applications of metal alloy nanowires are briefly discussed.
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Affiliation(s)
- Shumin Li
- Institute of Advanced Synthesis (IAS), Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P.R. China.
| | - Hui Jin
- Institute of Advanced Synthesis (IAS), Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P.R. China.
| | - Yawen Wang
- Institute of Advanced Synthesis (IAS), Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P.R. China.
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Lu Z, Zou L, Song W. Hierarchical Pt-In Nanowires for Efficient Methanol Oxidation Electrocatalysis. Molecules 2023; 28:molecules28031502. [PMID: 36771164 PMCID: PMC9920629 DOI: 10.3390/molecules28031502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/07/2023] [Accepted: 01/23/2023] [Indexed: 02/09/2023] Open
Abstract
Direct methanol fuel cells (DMFC) have attracted increasing research interest recently; however, their output performance is severely hindered by the sluggish kinetics of the methanol oxidation reaction (MOR) at the anode. Herein, unique hierarchical Pt-In NWs with uneven surface and abundant high-index facets are developed as efficient MOR electrocatalysts in acidic electrolytes. The developed hierarchical Pt89In11 NWs exhibit high MOR mass activity and specific activity of 1.42 A mgPt-1 and 6.2 mA cm-2, which are 5.2 and 14.4 times those of Pt/C, respectively, outperforming most of the reported MORs. In chronoamperometry tests, the hierarchical Pt89In11 NWs demonstrate a longer half-life time than Pt/C, suggesting the better CO tolerance of Pt89In11 NWs. After stability, the MOR activity can be recovered by cycling. XPS, CV measurement and CO stripping voltammetry measurements demonstrate that the outstanding catalytic activity may be attributed to the facile removal of CO due to the presence of In site-adsorbing hydroxyl species.
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Affiliation(s)
- Zhao Lu
- Analytical and Testing Center of Huazhong University of Science and Technology, Wuhan 430074, China
| | - Lu Zou
- State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
| | - Wulin Song
- Analytical and Testing Center of Huazhong University of Science and Technology, Wuhan 430074, China
- State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
- Correspondence: ; Tel.: +86-027-875592025
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Methyl Orange-Modified Au Nanoparticles Supported on Multiwalled Carbon Nanotubes as Electrocatalyst for Methanol Oxidation. INT J ELECTROCHEM SC 2023. [DOI: 10.1016/j.ijoes.2023.100052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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34
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Chu X, Wang K, Qian W, Xu H. Surface and interfacial engineering of 1D Pt-group nanostructures for catalysis. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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35
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Luo W, Jiang Y, Wang M, Lu D, Sun X, Zhang H. Design strategies of Pt-based electrocatalysts and tolerance strategies in fuel cells: a review. RSC Adv 2023; 13:4803-4822. [PMID: 36760269 PMCID: PMC9903923 DOI: 10.1039/d2ra07644f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 01/29/2023] [Indexed: 02/10/2023] Open
Abstract
As highly efficient conversion devices, proton-exchange-membrane fuel cells (PEMFCs) can directly convert chemical energy to electrical energy with high efficiencies and lower or even zero emissions compared to combustion engines. However, the practical applications of PEMFCs have been seriously hindered by the intermediates (especially CO) poisoning of anodic Pt catalysts. Hence, how to improve the CO tolerance of the needed Pt catalysts and reveal their anti-CO poisoning mechanism are the key points to developing novel anti-toxic Pt-based electrocatalysts. To date, two main strategies have received increasing attention in improving the CO tolerance of Pt-based electrocatalysts, including alloying Pt with a second element and fabricating composites with geometry and interface engineering. Herein, we will first discuss the latest developments of Pt-based alloys and their anti-CO poisoning mechanism. Subsequently, a detailed description of Pt-based composites with enhanced CO tolerance by utilizing the synergistic effect between Pt and carriers is introduced. Finally, a brief perspective and new insights on the design of Pt-based electrocatalysts to inhibit CO poisoning in PEMFCs are also presented.
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Affiliation(s)
- Wenlei Luo
- National Innovation Institute of Defense Technology, Academy of Military Science Beijing 100071 China
| | - Yitian Jiang
- State Key Laboratory of Space Power-sources Technology, Shanghai Institute of Space Power-Sources 2965 Dongchuan Road Shanghai 200245 China
| | - Mengwei Wang
- State Key Laboratory of Space Power-sources Technology, Shanghai Institute of Space Power-Sources 2965 Dongchuan Road Shanghai 200245 China
| | - Dan Lu
- State Key Laboratory of Space Power-sources Technology, Shanghai Institute of Space Power-Sources 2965 Dongchuan Road Shanghai 200245 China
| | - Xiaohui Sun
- State Key Laboratory of Space Power-sources Technology, Shanghai Institute of Space Power-Sources 2965 Dongchuan Road Shanghai 200245 China
| | - Huahui Zhang
- State Key Laboratory of Space Power-sources Technology, Shanghai Institute of Space Power-Sources 2965 Dongchuan Road Shanghai 200245 China
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Wang J, Zhang B, Guo W, Wang L, Chen J, Pan H, Sun W. Toward Electrocatalytic Methanol Oxidation Reaction: Longstanding Debates and Emerging Catalysts. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2211099. [PMID: 36706444 DOI: 10.1002/adma.202211099] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/23/2023] [Indexed: 05/30/2023]
Abstract
The study of direct methanol fuel cells (DMFCs) has lasted around 70 years, since the first investigation in the early 1950s. Though enormous effort has been devoted in this field, it is still far from commercialization. The methanol oxidation reaction (MOR), as a semi-reaction of DMFCs, is the bottleneck reaction that restricts the overall performance of DMFCs. To date, there has been intense debate on the complex six-electron reaction, but barely any reviews have systematically discussed this topic. To this end, the controversies and progress regarding the electrocatalytic mechanisms, performance evaluations as well as the design science toward MOR electrocatalysts are summarized. This review also provides a comprehensive introduction on the recent development of emerging MOR electrocatalysts with a focus on the innovation of the alloy, core-shell structure, heterostructure, and single-atom catalysts. Finally, perspectives on the future outlook toward study of the mechanisms and design of electrocatalysts are provided.
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Affiliation(s)
- Jianmei Wang
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Bingxing Zhang
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Wei Guo
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Lei Wang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
| | - Jian Chen
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, P. R. China
| | - Hongge Pan
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, P. R. China
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, P. R. China
| | - Wenping Sun
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, P. R. China
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, P. R. China
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Wang X, Liu Y, Ma XY, Chang LY, Zhong Q, Pan Q, Wang Z, Yuan X, Cao M, Lyu F, Yang Y, Chen J, Sham TK, Zhang Q. The Role of Bismuth in Suppressing the CO Poisoning in Alkaline Methanol Electrooxidation: Switching the Reaction from the CO to Formate Pathway. NANO LETTERS 2023; 23:685-693. [PMID: 36594847 DOI: 10.1021/acs.nanolett.2c04568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
While tuning the electronic structure of Pt can thermodynamically alleviate CO poisoning in direct methanol fuel cells, the impact of interactions between intermediates on the reaction pathway is seldom studied. Herein, we contrive a PtBi model catalyst and realize a complete inhibition of the CO pathway and concurrent enhancement of the formate pathway in the alkaline methanol electrooxidation. The key role of Bi is enriching OH adsorbates (OHad) on the catalyst surface. The competitive adsorption of CO adsorbates (COad) and OHad at Pt sites, complementing the thermodynamic contribution from alloying Bi with Pt, switches the intermediate from COad to formate that circumvents CO poisoning. Hence, 8% Bi brings an approximately 6-fold increase in activity compared to pure Pt nanoparticles. This notion can be generalized to modify commercially available Pt/C catalysts by a microwave-assisted method, offering opportunities for the design and practical production of CO-tolerance electrocatalysts in an industrial setting.
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Affiliation(s)
- Xuchun Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, P. R. China
- Department of Chemistry, and Soochow-Western Center for Synchrotron Radiation Research, University of Western Ontario, London, Ontario N6A5B7, Canada
| | - Yu Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, P. R. China
| | - Xing-Yu Ma
- Key Laboratory of General Chemistry of National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Lo-Yueh Chang
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Qixuan Zhong
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, P. R. China
| | - Qi Pan
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, P. R. China
| | - Zhiqiang Wang
- Department of Chemistry, and Soochow-Western Center for Synchrotron Radiation Research, University of Western Ontario, London, Ontario N6A5B7, Canada
| | - Xiaolei Yuan
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Muhan Cao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, P. R. China
| | - Fenglei Lyu
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou 215006, China
| | - Yaoyue Yang
- Key Laboratory of General Chemistry of National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
| | - Jinxing Chen
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, P. R. China
| | - Tsun-Kong Sham
- Department of Chemistry, and Soochow-Western Center for Synchrotron Radiation Research, University of Western Ontario, London, Ontario N6A5B7, Canada
| | - Qiao Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, P. R. China
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Wang W, Bai X, Yuan X, Liu Y, Yang L, Chang F. Platinum-Cobalt Nanowires for Efficient Alcohol Oxidation Electrocatalysis. MATERIALS (BASEL, SWITZERLAND) 2023; 16:840. [PMID: 36676576 PMCID: PMC9864574 DOI: 10.3390/ma16020840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/02/2023] [Accepted: 01/12/2023] [Indexed: 06/17/2023]
Abstract
The compositions and surface facets of platinum (Pt)-based electrocatalysts are of great significance for the development of direct alcohol fuel cells (DAFCs). We reported an approach for preparing ultrathin PtnCo100-n nanowire (NW) catalysts with high activity. The PtnCo100-n NW alloy catalysts synthesized by single-phase surfactant-free synthesis have adjustable compositions and (111) plane and strain lattices. X-ray diffraction (XRD) results indicate that the alloy composition can adjust the lattice shrinkage or expansion of PtnCo100-n NWs. X-ray photoelectron spectroscopy (XPS) results show that the electron structure of Pt is changed by the alloying effect caused by electron modulation in the d band, and the chemical adsorption strength of Pt is decreased, thus the catalytic activity of Pt is increased. The experimental results show that the activity of PtnCo100-n for the oxidation of methanol and ethanol is related to the exposed crystal surface, strain lattice and composition of catalysts. The PtnCo100-n NWs exhibit stronger electrocatalytic performance for both methanol oxidation reaction (MOR) and ethanol oxidation reaction (EOR). The dominant (111) plane Pt53Co47 exhibits the highest electrocatalytic activity in MOR, which is supported by the results of XPS. This discovery provides a new pathway to design high activity, stability nanocatalysts to enhance direct alcohol fuel cells.
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Affiliation(s)
| | | | | | - Yumin Liu
- Correspondence: (Y.L.); (L.Y.); (F.C.)
| | - Lin Yang
- Correspondence: (Y.L.); (L.Y.); (F.C.)
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Li F, Du M, Xiao X, Xu Q. Self-Supporting Metal-Organic Framework-Based Nanoarrays for Electrocatalysis. ACS NANO 2022; 16:19913-19939. [PMID: 36399093 DOI: 10.1021/acsnano.2c09396] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The replacement of powdery catalysts with self-supporting alternatives for catalyzing various electrochemical reactions is extremely important for the large-scale commercial application of renewable energy storage and conversion technologies. Metal-organic framework (MOF)-based nanoarrays possess tunable compositions, well-defined structure, abundant active sites, effective mass and electron transport, etc., which enable them to exhibit superior electrocatalytic performance in multiple electrochemical reactions. This review presents the latest research progress in developing MOF-based nanoarrays for electrocatalysis. We first highlight the structural features and electrocatalytic advantages of MOF-based nanoarrays, followed by a detailed summary of the design and synthesis strategies of MOF-based nanoarrays, and then describe the recent progress of their application in various electrocatalytic reactions. Finally, the challenges and perspectives are discussed, where further exploration into MOF-based nanoarrays will facilitate the development of electrochemical energy conversion technologies.
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Affiliation(s)
- Fayan Li
- Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials (SKLPM), SUSTech-Kyoto University Advanced Energy Materials Joint Innovation Laboratory (SKAEM-JIL), Department of Chemistry, Department of Materials Science and Engineering and Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Meng Du
- Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials (SKLPM), SUSTech-Kyoto University Advanced Energy Materials Joint Innovation Laboratory (SKAEM-JIL), Department of Chemistry, Department of Materials Science and Engineering and Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Xin Xiao
- Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials (SKLPM), SUSTech-Kyoto University Advanced Energy Materials Joint Innovation Laboratory (SKAEM-JIL), Department of Chemistry, Department of Materials Science and Engineering and Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Qiang Xu
- Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials (SKLPM), SUSTech-Kyoto University Advanced Energy Materials Joint Innovation Laboratory (SKAEM-JIL), Department of Chemistry, Department of Materials Science and Engineering and Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
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40
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Geisenhoff JQ, Yin H, Oget N, Chang H, Chen L, Schimpf AM. Controlled CO labilization of tungsten carbonyl precursors for the low-temperature synthesis of tungsten diselenide nanocrystals. FRONTIERS IN NANOTECHNOLOGY 2022. [DOI: 10.3389/fnano.2022.1026635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
We report a low-temperature colloidal synthesis of WSe2 nanocrystals from tungsten hexacarbonyl and diphenyl diselenide in trioctylphosphine oxide (TOPO). We identify TOPO-substituted intermediates, W(CO)5TOPO and cis-W(CO)4(TOPO)2 by infrared spectroscopy. To confirm these assignments, we synthesize aryl analogues of phosphine-oxide-substituted intermediates, W(CO)5TPPO (synthesized previously, TPPO = triphenylphosphine oxide) and cis-W(CO)4(TPPO)2 and fac-W(CO)3(TPPO)3 (new structures reported herein). Ligation of the tungsten carbonyl by either the alkyl or aryl phosphine oxides results in facile labilization of the remaining CO, enabling low-temperature decomposition to nucleate WSe2 nanocrystals. The reactivity in phosphine oxides is contrasted with syntheses containing phosphine ligands, where substitution results in decreased CO labilization and higher temperatures are required to induce nanocrystal nucleation.
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Controlled Synthesis of Carbon-Supported Pt-Based Electrocatalysts for Proton Exchange Membrane Fuel Cells. ELECTROCHEM ENERGY R 2022; 5:13. [PMID: 36212026 PMCID: PMC9536324 DOI: 10.1007/s41918-022-00173-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/18/2021] [Accepted: 10/15/2021] [Indexed: 10/26/2022]
Abstract
AbstractProton exchange membrane fuel cells are playing an increasing role in postpandemic economic recovery and climate action plans. However, their performance, cost, and durability are significantly related to Pt-based electrocatalysts, hampering their large-scale commercial application. Hence, considerable efforts have been devoted to improving the activity and durability of Pt-based electrocatalysts by controlled synthesis in recent years as an effective method for decreasing Pt use, and consequently, the cost. Therefore, this review article focuses on the synthesis processes of carbon-supported Pt-based electrocatalysts, which significantly affect the nanoparticle size, shape, and dispersion on supports and thus the activity and durability of the prepared electrocatalysts. The reviewed processes include (i) the functionalization of a commercial carbon support for enhanced catalyst–support interaction and additional catalytic effects, (ii) the methods for loading Pt-based electrocatalysts onto a carbon support that impact the manufacturing costs of electrocatalysts, (iii) the preparation of spherical and nonspherical Pt-based electrocatalysts (polyhedrons, nanocages, nanoframes, one- and two-dimensional nanostructures), and (iv) the postsynthesis treatments of supported electrocatalysts. The influences of the supports, key experimental parameters, and postsynthesis treatments on Pt-based electrocatalysts are scrutinized in detail. Future research directions are outlined, including (i) the full exploitation of the potential functionalization of commercial carbon supports, (ii) scaled-up one-pot synthesis of carbon-supported Pt-based electrocatalysts, and (iii) simplification of postsynthesis treatments. One-pot synthesis in aqueous instead of organic reaction systems and the minimal use of organic ligands are preferred to simplify the synthesis and postsynthesis treatment processes and to promote the mass production of commercial carbon-supported Pt-based electrocatalysts.
Graphical Abstract
This review focuses on the synthesis process of Pt-based electrocatalysts/C to develop aqueous one-pot synthesis at large-scale production for PEMFC stack application.
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Qiao M, Meng FY, Wu H, Wei Y, Zeng XF, Wang JX. PtCuRu Nanoflowers with Ru-Rich Edge for Efficient Fuel-Cell Electrocatalysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2204720. [PMID: 36269882 DOI: 10.1002/smll.202204720] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Enhancing the catalytic activity of Pt-based alloy by a rational structural design is the key to addressing the sluggish kinetics of direct alcohol fuel cells. Herein, a facile one-pot method is reported to synthesize PtCuRu nanoflowers (NFs). The synergetic effect among Pt, Cu, and Ru can lower the d-band center of Pt, regulate the morphology, generate Ru-rich edge, and allow the exposure of more high index facets. The optimized Pt0.68 Cu0.18 Ru0.14 NFs exhibit outstanding electrocatalytic performances and excellent anti-poisoning abilities. The specific activities for the methanol oxidation reaction (MOR) (7.65 mA cm-2 ) and ethanol oxidation reaction (EOR) (7.90 mA cm-2 ) are 6.0 and 7.1 times higher than commercial Pt/C, respectively. The CO stripping experiment and the chronoamperometric (5000 s) demonstrate the superior anti-poisoning property and durability performance. Density functional theory calculations confirm that high metallization degree leads to the decrease of d-band center, the promotion of oxidation of CO, and improvement of the inherent activity and anti-poisoning ability. A Ru-rich edge exposes abundant high index facets to accelerate the reaction kinetics of rate-determining steps by decreasing the energy barrier for forming *HCOOH (MOR) and CC bond breaking (EOR).
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Affiliation(s)
- Meng Qiao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Fan-Yi Meng
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Hao Wu
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yan Wei
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xiao-Fei Zeng
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jie-Xin Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
- Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
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43
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Zhang W, Pu W, Qu Y, Guang B, Xiao Y, Liu Y. The preparation of bifunctional Co-N co-doped carbon with bamboo-like hollow tubular as an efficient electrocatalyst for oxygen reduction and methanol oxidation reaction. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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44
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Dai Y, Kong F, Tai X, Zhang Y, Liu B, Cai J, Gong X, Xia Y, Guo P, Liu B, Zhang J, Li L, Zhao L, Sui X, Wang Z. Advances in Graphene-Supported Single-Atom Catalysts for Clean Energy Conversion. ELECTROCHEM ENERGY R 2022. [DOI: 10.1007/s41918-022-00142-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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45
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Li Y, Li H, Li G, Wang D, Wang S, Zhao X. Low-temperature N-anchored ordered Pt 3Co intermetallic nanoparticles as electrocatalysts for methanol oxidation reaction. NANOSCALE 2022; 14:14199-14211. [PMID: 36125088 DOI: 10.1039/d2nr04316e] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
To enhance nanocatalyst performance and durability for the methanol oxidation reaction (MOR) in a direct methanol fuel cell, small-sized (2.1 nm) and structurally ordered Pt3Co intermetallic nanoparticles are uniformly anchored onto nitrogen-doped carbon nanotubes (N-CNTs) via a low-temperature N-anchoring method, and the N-doping abilities of different N-containing reagents are compared. After investigating the microstructure of Pt3Co/N-CNTs and evaluating their catalytic activity for the MOR, the results show that N-doping facilitates the uniform loading of Pt3Co NPs and plays a crucial role in improving the electrocatalytic activity of Pt3Co NPs supported on CNTs. Pt3Co/N-CNT-M with melamine as the N dopant exhibits the highest MOR activity and stability among all N-CNT-supported Pt3Co NPs and Pt/N-CNT-M. Density functional theory calculations suggest that the doping of N enhances the binding energy of CNTs to Pt3Co NPs, and the MOR mechanism shows that the introduction of Co is the reason for the enhancement of MOR reaction kinetics. The excellent electrochemical performance of Pt3Co/N-CNT-M is mainly attributed to the synergistic effect of N and Pt3Co intermetallic nanoparticles. The combination of ordered alloy nanoparticles and high-performance carrier N-CNT-M described herein exhibits great potential for fuel cells and may provide an unequivocal direction for the optimization of catalyst performance.
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Affiliation(s)
- Yanru Li
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China.
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730050, China
| | - Hongwei Li
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China.
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730050, China
| | - Guixian Li
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China.
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730050, China
| | - Dongliang Wang
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China.
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730050, China
| | - Shoudeng Wang
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China.
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730050, China
| | - Xinhong Zhao
- School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China.
- Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province, Lanzhou, 730050, China
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46
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Ding J, Jing S, Yin C, Ban C, Wang K, Liu X, Duan Y, Zhang Y, Han G, Gan L, Rao J. A new insight into the promoting effects of transition metal phosphides in methanol electrooxidation. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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47
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Kong F, Liu X, Song Y, Qian Z, Li J, Zhang L, Yin G, Wang J, Su D, Sun X. Selectively Coupling Ru Single Atoms to PtNi Concavities for High‐Performance Methanol Oxidation via
d
‐Band Center Regulation. Angew Chem Int Ed Engl 2022; 61:e202207524. [DOI: 10.1002/anie.202207524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Fanpeng Kong
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage Harbin Institute of Technology Harbin China
- Department of Mechanical and Materials Engineering University of Western Ontario London Canada
| | - Xiaozhi Liu
- Institute of Physics Chinese Academy of Sciences Beijing China
| | - Yajie Song
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage Harbin Institute of Technology Harbin China
| | - Zhengyi Qian
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage Harbin Institute of Technology Harbin China
| | - Junjie Li
- Department of Mechanical and Materials Engineering University of Western Ontario London Canada
| | - Lei Zhang
- Department of Mechanical and Materials Engineering University of Western Ontario London Canada
| | - Geping Yin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage Harbin Institute of Technology Harbin China
| | - Jiajun Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage Harbin Institute of Technology Harbin China
- Chongqing Research Institute Harbin Institute of Technology Chongqing China
| | - Dong Su
- Institute of Physics Chinese Academy of Sciences Beijing China
| | - Xueliang Sun
- Department of Mechanical and Materials Engineering University of Western Ontario London Canada
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48
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Luo JY, Hu FC, Xi BJ, Han QW, Wu XQ, Wu YP, Zhang Q, Chi R, Li DS. Fabricating of Ni-BTC/NiS2 heterostructure via self-assembly strategy for electrocatalytic methanol oxidation. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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49
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McGuire SC, Zhang Y, Wong SS. A combined TEM and SAXS study of the growth and self-assembly of ultrathin Pt nanowires. NANOTECHNOLOGY 2022; 33:475602. [PMID: 36044706 DOI: 10.1088/1361-6528/ac893b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Ultrathin Pt nanowires possess high activity for various electrocatalytic applications. However, little work has focused on understanding their growth mechanisms. Herein, we utilize a combination of time-dependent,ex situtransmission electron microscopy (TEM) and small angle x-ray scattering (SAXS) techniques to observe the growth process in addition to associated surfactant-based interactions. TEM images indicate that initially nanoparticles are formed within 30 s; these small 'seed' particles quickly elongate to form ultrathin nanowires after 2 min. These motifs remain relatively unchanged in size and shape up to 480 min of reaction. Complementary SAXS data suggests that the initial nanoparticles, which are coated by a surfactant bilayer, arrange into abccsuperlattice. With increasing reaction time, thebcclattice disappears as the nanoparticles grow into nanowires, which then self-assemble into a columnar hexagonal structure in which the individual nanowires are covered by a CTAB monolayer. The hexagonal structure eventually degrades, thereby leading to the formation of lamellar stacking phases comprised of surfactant bilayers. To the best of our knowledge, this is the first time that SAXS has been used to monitor the growth and self-assembly of Pt nanowires. These insights can be used to better understand and rationally control the formation of anisotropic motifs of other metallic nanostructures.
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Affiliation(s)
- Scott C McGuire
- Department of Chemistry, State University of New York at Stony Brook, Stony Brook, NY 11794-3400, United States of America
| | - Yugang Zhang
- Center for Functional Nanomaterials, Building 735, Brookhaven National Laboratory, Upton, NY 11973, United States of America
| | - Stanislaus S Wong
- Department of Chemistry, State University of New York at Stony Brook, Stony Brook, NY 11794-3400, United States of America
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50
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Kong F, Liu X, Song Y, Qian Z, Li J, Zhang L, Yin G, Su D, Wang J, Sun X. Selectively Coupling Ru Single Atoms to PtNi Concavities for High Performance Methanol Oxidation via d‐Band Center Regulation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Fanpeng Kong
- Harbin Institute of Technology MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage No. 92, Xidazhi street 150000 Harbin CHINA
| | - Xiaozhi Liu
- Chinese Academy of Sciences Institute of Physics CHINA
| | - Yajie Song
- Harbin Institute of Technology MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage CHINA
| | - Zhengyi Qian
- Harbin Institute of Technology MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage CHINA
| | - Junjie Li
- Western University Department of Mechanical and Materials Engineering CANADA
| | - Lei Zhang
- Western University Department of Mechanical and Materials Engineering CANADA
| | - Geping Yin
- Harbin Institute of Technology MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage CHINA
| | - Dong Su
- Chinese Academy of Sciences Institute of Physics CANADA
| | - Jiajun Wang
- Harbin Institute of Technology MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage CHINA
| | - Xueliang Sun
- Western University 1151 Richmond Street N6A 3K7 London CANADA
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