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Sun B, Lv H, Xu Q, Tong P, Qiao P, Tian H, Xia H. Island-in-Sea Structured Pt 3Fe Nanoparticles-in-Fe Single Atoms Loaded in Carbon Materials as Superior Electrocatalysts toward Alkaline HER and Acidic ORR. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2400240. [PMID: 38593333 DOI: 10.1002/smll.202400240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/10/2024] [Indexed: 04/11/2024]
Abstract
In this work, Pt3Fe nanoparticles (Pt3Fe NPs) with the ordered internal structure and Pt-rich shells surrounded by plenty of Fe single atoms (Fe SAs) as active species (Pt3Fe NP-in-Fe SA) loaded in the carbon materials are successfully fabricated, which are abbreviated as island-in-sea structured (IISS) Pt3Fe NP-in-Fe SA catalysts. Moreover, the synergistic effect of O-bridging between Pt3Fe NPs and Fe SAs, and the ordered internal structured Pt3Fe NPs with Pt-rich shells of an optimal thickness contributes to the achievement of the local acidic environments on the surfaces of Pt3Fe NPs in the alkaline hydrogen evolution reaction (HER) and the enhancement of the desorption rate of *OH intermediate in the acidic oxygen reduction reaction (ORR). In addition, the electronic interactions between Pt3Fe NPs and dispersed Fe SAs cannot only provide efficient electrons transfer, but also prevent the aggregation and dissolution of Pt3Fe NPs. Furthermore, the overpotential and the half wave potential of the as-prepared IISS Pt3Fe NP-in-Fe SA catalysts toward the alkaline HER and toward the acidic ORR are 8 mV at a current density of 10 mA cm-2 and 0.933 V, respectively, which is 29 lower and 86 mV higher than those (37 mV and 0.847 V) of commercial Pt/C catalysts.
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Affiliation(s)
- Benteng Sun
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Hang Lv
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Qi Xu
- Center of Electron Microscope, State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Peiran Tong
- Center of Electron Microscope, State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Panzhe Qiao
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China
| | - He Tian
- Center of Electron Microscope, State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Haibing Xia
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
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2
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Shi F, Tieu P, Hu H, Peng J, Zhang W, Li F, Tao P, Song C, Shang W, Deng T, Gao W, Pan X, Wu J. Direct in-situ imaging of electrochemical corrosion of Pd-Pt core-shell electrocatalysts. Nat Commun 2024; 15:5084. [PMID: 38877007 PMCID: PMC11178921 DOI: 10.1038/s41467-024-49434-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 06/03/2024] [Indexed: 06/16/2024] Open
Abstract
Corrosion of electrocatalysts during electrochemical operations, such as low potential - high potential cyclic swapping, can cause significant performance degradation. However, the electrochemical corrosion dynamics, including structural changes, especially site and composition specific ones, and their correlation with electrochemical processes are hidden due to the insufficient spatial-temporal resolution characterization methods. Using electrochemical liquid cell transmission electron microscopy, we visualize the electrochemical corrosion of Pd@Pt core-shell octahedral nanoparticles towards a Pt nanoframe. The potential-dependent surface reconstruction during multiple continuous in-situ cyclic voltammetry with clear redox peaks is captured, revealing an etching and deposition process of Pd that results in internal Pd atoms being relocated to external surface, followed by subsequent preferential corrosion of Pt (111) terraces rather than the edges or corners, simultaneously capturing the structure evolution also allows to attribute the site-specific Pt and Pd atomic dynamics to individual oxidation and reduction events. This work provides profound insights into the surface reconstruction of nanoparticles during complex electrochemical processes.
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Affiliation(s)
- Fenglei Shi
- Center of Hydrogen Science & State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, People's Republic of China
| | - Peter Tieu
- Department of Chemistry, University of California, Irvine, Irvine, CA, 92697, USA
| | - Hao Hu
- Center of Hydrogen Science & State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, People's Republic of China
| | - Jiaheng Peng
- Center of Hydrogen Science & State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, People's Republic of China
| | - Wencong Zhang
- Center of Hydrogen Science & State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, People's Republic of China
| | - Fan Li
- Center of Hydrogen Science & State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, People's Republic of China
| | - Peng Tao
- Center of Hydrogen Science & State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, People's Republic of China
| | - Chengyi Song
- Center of Hydrogen Science & State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, People's Republic of China
| | - Wen Shang
- Center of Hydrogen Science & State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, People's Republic of China
| | - Tao Deng
- Center of Hydrogen Science & State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, People's Republic of China
| | - Wenpei Gao
- Center of Hydrogen Science & State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, People's Republic of China.
- Future Material Innovation Center, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
| | - Xiaoqing Pan
- Department of Materials Science and Engineering, University of California, Irvine, Irvine, CA, 92697, USA.
- Department of Physics and Astronomy, University of California, Irvine, Irvine, CA, 92697, USA.
| | - Jianbo Wu
- Center of Hydrogen Science & State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, People's Republic of China.
- Future Material Innovation Center, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
- Materials Genome Initiative Center, Shanghai Jiao Tong University, Shanghai, People's Republic of China.
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3
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Choi H, Choi Y, Min J, Ko K, Kim Y, Chougule SS, Khikmatulla D, Jung N. Origin and Formation Mechanism of Carbon Shell-Encapsulated Metal Nanoparticles for Powerful Fuel Cell Durability. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2862. [PMID: 37947707 PMCID: PMC10648549 DOI: 10.3390/nano13212862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 10/26/2023] [Accepted: 10/28/2023] [Indexed: 11/12/2023]
Abstract
Proton exchange membrane fuel cells (PEMFCs) face technical issues of performance degradation due to catalyst dissolution and agglomeration in real-world operations. To address these challenges, intensive research has been recently conducted to introduce additional structural units on the catalyst surface. Among various concepts for surface modification, carbon shell encapsulation is known to be a promising strategy since the carbon shell can act as a protective layer for metal nanoparticles. As an interesting approach to form carbon shells on catalyst surfaces, the precursor ligand-induced formation is preferred due to its facile synthesis and tunable control over the carbon shell porosity. However, the origin of the carbon source and the carbon shell formation mechanism have not been studied in depth yet. Herein, this study aims to investigate carbon sources through the use of different precursors and the introduction of new methodologies related to the ligand exchange phenomenon. Subsequently, we provide new insights into the carbon shell formation mechanism using X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). Finally, the thermal stability and electrochemical durability of carbon shells are thoroughly investigated through in situ transmission electron microscopy (in situ TEM) and accelerated durability tests.
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Affiliation(s)
| | | | | | | | | | | | | | - Namgee Jung
- Graduate School of Energy Science and Technology (GEST), Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea; (H.C.); (Y.C.); (J.M.); (K.K.); (Y.K.); (S.S.C.); (D.K.)
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4
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Chen Y, Tan Z, Wang E, Yin J, Luo L, Shen S, Zhang J. Progress and prospects of dealloying methods for energy-conversion electrocatalysis. Dalton Trans 2023. [PMID: 37129533 DOI: 10.1039/d3dt00449j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Developing hydrogen production and utilization technologies is a promising way to achieve large-scale applications of renewable energy. For both water electrolysis and fuel cell electrode reactions, electrocatalysts are critical to their energy conversion efficiencies. Among the various strategies for improving the performance of electrocatalysts, dealloying has been developed as a commonly used effective post-processing method. It originated from anti-corrosion science and can form metal materials with porous or "skin" nanostructures by selectively dissolving the active components in alloys. There are generally two types of dealloying methods: electrochemical dealloying and chemical dealloying. Electrochemical dealloying is more controllable, while chemical dealloying is simpler and less expensive. In this review, the fundamentals, histories, and progress of dealloying methods for energy conversion electrocatalysis are systematically summarized. Furthermore, current problems and prospects are proposed.
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Affiliation(s)
- Yuanda Chen
- Institute of Fuel Cells, Key Laboratory for Power Machinery and Engineering of MOE, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China.
| | - Zehao Tan
- Institute of Fuel Cells, Key Laboratory for Power Machinery and Engineering of MOE, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China.
| | - Enping Wang
- Institute of Fuel Cells, Key Laboratory for Power Machinery and Engineering of MOE, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China.
| | - Jiewei Yin
- Institute of Fuel Cells, Key Laboratory for Power Machinery and Engineering of MOE, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China.
| | - Liuxuan Luo
- Institute of Fuel Cells, Key Laboratory for Power Machinery and Engineering of MOE, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China.
| | - Shuiyun Shen
- Institute of Fuel Cells, Key Laboratory for Power Machinery and Engineering of MOE, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China.
| | - Junliang Zhang
- Institute of Fuel Cells, Key Laboratory for Power Machinery and Engineering of MOE, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China.
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5
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Li C, Clament Sagaya Selvam N, Fang J. Shape-Controlled Synthesis of Platinum-Based Nanocrystals and Their Electrocatalytic Applications in Fuel Cells. NANO-MICRO LETTERS 2023; 15:83. [PMID: 37002489 PMCID: PMC10066057 DOI: 10.1007/s40820-023-01060-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 02/28/2023] [Indexed: 06/05/2023]
Abstract
To achieve environmentally benign energy conversion with the carbon neutrality target via electrochemical reactions, the innovation of electrocatalysts plays a vital role in the enablement of renewable resources. Nowadays, Pt-based nanocrystals (NCs) have been identified as one class of the most promising candidates to efficiently catalyze both the half-reactions in hydrogen- and hydrocarbon-based fuel cells. Here, we thoroughly discuss the key achievement in developing shape-controlled Pt and Pt-based NCs, and their electrochemical applications in fuel cells. We begin with a mechanistic discussion on how the morphology can be precisely controlled in a colloidal system, followed by highlighting the advanced development of shape-controlled Pt, Pt-alloy, Pt-based core@shell NCs, Pt-based nanocages, and Pt-based intermetallic compounds. We then select some case studies on models of typical reactions (oxygen reduction reaction at the cathode and small molecular oxidation reaction at the anode) that are enhanced by the shape-controlled Pt-based nanocatalysts. Finally, we provide an outlook on the potential challenges of shape-controlled nanocatalysts and envision their perspective with suggestions.
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Affiliation(s)
- Can Li
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, USA
| | | | - Jiye Fang
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, USA.
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6
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Belenov S, Nevelskaya A, Nikulin A, Tolstunov M. The Effect of Pretreatment on a PtCu/C Catalyst's Structure and Functional Characteristics. Int J Mol Sci 2023; 24:ijms24032177. [PMID: 36768501 PMCID: PMC9916518 DOI: 10.3390/ijms24032177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 01/25/2023] Open
Abstract
This research focuses on studying the effects of various pretreatment types on a PtCu/C catalyst synthesized by the co-deposition of metal precursors. The treatment in a 1 M HNO3 solution for 1 h is shown to result in a slight increase in activity in the oxygen electroreduction reaction (both the mass activity and specific activity calculated for the value of the electrochemically active surface area). The sample obtained after the thermal treatment, which is carried out at 350 °C under an argon atmosphere for 1 h, demonstrates 1.7 times higher specific activity than the sample before the treatment. The durability testing results obtained by the stress testing method in a potential range of 0.6-1.4 V during 2000 cycles show that the PtCu/C catalysts after both the acid treatment and the thermal treatment are characterized by higher residual activity than the sample in the "as-prepared" state.
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Affiliation(s)
- Sergey Belenov
- Chemistry Faculty, Southern Federal University, 7 Zorge St, 344090 Rostov-on-Don, Russia
- Prometheus R&D LLC, 4g/36 Zhmaylova St, 344091 Rostov-on-Don, Russia
- Correspondence:
| | - Alina Nevelskaya
- Chemistry Faculty, Southern Federal University, 7 Zorge St, 344090 Rostov-on-Don, Russia
| | - Alexey Nikulin
- Chemistry Faculty, Southern Federal University, 7 Zorge St, 344090 Rostov-on-Don, Russia
- Federal State Budgetary Institution of Science “Federal Research Centre The Southern Scientific Centre of the Russian Academy of Sciences” (SSC RAS), St. Chehova, 41, 344006 Rostov-on-Don, Russia
| | - Mikhail Tolstunov
- Chemistry Faculty, Southern Federal University, 7 Zorge St, 344090 Rostov-on-Don, Russia
- Federal State Budgetary Institution of Science “Federal Research Centre The Southern Scientific Centre of the Russian Academy of Sciences” (SSC RAS), St. Chehova, 41, 344006 Rostov-on-Don, Russia
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7
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Jeon TY, Lee HK, Yoon GH, Lee SH, Yun HJ, Kim KJ, Lee KS, Pinna N, Yu SH. Selective dealloying of chemically disordered Pt-Ni bimetallic nanoparticles for the oxygen reduction reaction. NANOSCALE 2023; 15:1136-1144. [PMID: 35880665 DOI: 10.1039/d2nr02677e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Changes in electronic and compositional structures of Pt-Ni electrocatalysts with 44% of Ni fraction with repeated chemical dealloying have been studied. By comparing the Pt-enriched surfaces formed using hydroquinone and sulfuric acid as a leaching agent, we found that hydroquinone generated Pt-enriched surfaces exhibit the highest oxygen reduction reaction (ORR) activity after repeating the treatment twice. In particular, it was found that while sulfuric acid causes an uncontrollable dissolution of Ni clusters, the unique selectivity of hydroquinone allows the preferential dissolution of Ni atoms alloyed with Pt. Despite its wide usage in the field, the results show that traditional acid leaching is unsuitable for Pt-Ni alloys with a high Ni content and an incomplete alloying level. We finally proved that the unique and lasting selectivity of hydroquinone enables an incompletely alloyed Pt-Ni catalyst to obtain a highly ORR active Pt shell region without an extensive loss of Ni.
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Affiliation(s)
- Tae-Yeol Jeon
- Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology, Pohang 37673, Republic of Korea.
| | - Han-Koo Lee
- Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology, Pohang 37673, Republic of Korea.
| | - Geon-Hee Yoon
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea.
| | - Si-Hwan Lee
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea.
| | - Hyung Joong Yun
- Research Center for Materials Analysis, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea
| | - Ki-Jeong Kim
- Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology, Pohang 37673, Republic of Korea.
| | - Kug-Seung Lee
- Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology, Pohang 37673, Republic of Korea.
| | - Nicola Pinna
- Institut für Chemie and IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
| | - Seung-Ho Yu
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea.
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8
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Wu H, Zhong H, Pan Y, Li H, Peng Y, Yang L, Luo S, Banham D, Zeng J. Highly stable and active Pt-skinned octahedral PtCu/C for oxygen reduction reaction. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2022.130341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Price CC, Singh A, Frey NC, Shenoy VB. Efficient catalyst screening using graph neural networks to predict strain effects on adsorption energy. SCIENCE ADVANCES 2022; 8:eabq5944. [PMID: 36417537 PMCID: PMC9683700 DOI: 10.1126/sciadv.abq5944] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 10/04/2022] [Indexed: 06/03/2023]
Abstract
Small-molecule adsorption energies correlate with energy barriers of catalyzed intermediate reaction steps, determining the dominant microkinetic mechanism. Straining the catalyst can alter adsorption energies and break scaling relationships that inhibit reaction engineering, but identifying desirable strain patterns using density functional theory is intractable because of the high-dimensional search space. We train a graph neural network to predict the adsorption energy response of a catalyst/adsorbate system under a proposed surface strain pattern. The training data are generated by randomly straining and relaxing Cu-based binary alloy catalyst complexes taken from the Open Catalyst Project. The trained model successfully predicts the adsorption energy response for 85% of strains in unseen test data, outperforming ensemble linear baselines. Using ammonia synthesis as an example, we identify Cu-S alloy catalysts as promising candidates for strain engineering. Our approach can locate strain patterns that break adsorption energy scaling relations to improve catalyst performance.
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Affiliation(s)
- Christopher C. Price
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Akash Singh
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Nathan C. Frey
- Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, MA 02421, USA
| | - Vivek B. Shenoy
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
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10
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Li H, Zhang X, Sun Z, Ma W. Rapid Screening of Bimetallic Electrocatalysts Using Single Nanoparticle Collision Electrochemistry. J Am Chem Soc 2022; 144:16480-16489. [PMID: 36037266 DOI: 10.1021/jacs.2c05299] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The pace of nanomaterial discovery for high-performance electrocatalysts could be accelerated by the development of efficient screening methods. However, conventional electrochemical characterization via drop-casting is inherently inaccurate and time-consuming, as such ensemble measurements are serially performed through nanocatalyst synthesis, morphological characterization, and performance testing. Herein, we propose a rapid electrochemical screening method for bimetallic electrocatalysts that combines nanoparticle (NP) preparation and performance testing at the single NP level, thus avoiding any inhomogeneous averaging contribution. We employed single NP collision electrochemistry to realize in situ electrodeposition of a precisely tunable Pt shell onto individual parent NPs, followed by instantaneous electrocatalytic measurement of the newborn bimetallic core-shell NPs. We demonstrated the utility of this approach by screening bimetallic Au-Pt NPs and Ag-Pt NPs, thereby exhibiting promising electrocatalytic activity at optimal atomic ratios for methanol oxidation and oxygen reduction reactions, respectively. This work provides a new insight for the rapid screening of other bimetallic electrocatalysts.
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Affiliation(s)
- Huimin Li
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Xuanxuan Zhang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Zehui Sun
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Wei Ma
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
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11
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A Chemical Dealloying Approach for Pt Surface-enriched Pt3Co Alloy Nanoparticles as Oxygen Reduction Reaction Electrocatalysts. Chem Res Chin Univ 2022. [DOI: 10.1007/s40242-021-1238-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Li C, Song L, Zhao X, Sasaki K, Xie J. Nitrogen-Doped PtNi Catalysts on Polybenzimidazole-Functionalized Carbon Support for the Oxygen Reduction Reaction in Polymer Electrolyte Membrane Fuel Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:26814-26823. [PMID: 35666990 DOI: 10.1021/acsami.2c05717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
PtM (M = 3d transition metals) alloys are known as the promising oxygen reduction reaction catalysts and have been considered as the replacement of pure Pt catalysts for the commercialization of proton exchange membrane fuel cells. Although great progress has been made in the past three decades, the performance and durability of PtM catalysts still face stringent challenges from practical applications. Functionalization of a catalyst carbon support with nitrogen-contained groups can add charges onto its surface, which can be utilized to build a more complete ionomer/catalyst interface, to reduce the catalyst particle size, and to improve particle size distribution. Nitriding of PtNi catalysts can effectively improve the catalyst activity and stability by the modification of lattice strain. Hereby, we propose a synergistic approach of combining polybenzimidazole-grafted Vulcan XC72 carbon as the catalyst carbon support and the nitriding of PtNi to develop PtNiN/XC72-polybenzimidazole catalysts. Such PtNiN/XC72-PBI catalysts exhibit the excellent performance of fuel cell membrane electrode assembly (i.e., mass activity, 440 mA mgPt-1; electrochemical surface area, 51 m2 gPt-1; and rated power density, 836 mW cm-2) as well as promising catalyst stability. The developed PtNiN/XC72-PBI meets the US DOE 2020 targets of mass activity for the fuel cell catalysts. This work provides a novel approach and a promising pathway on the development of the catalyst using such a synergistic approach─modification of the catalyst structure by nitrogen doping and functionalization of carbon support by polybenzimidazole for both high performance and high durability.
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Affiliation(s)
- Chenzhao Li
- Department of Mechanical Energy Engineering, Purdue School of Engineering and Technology, Indiana University-Purdue University, Indianapolis, Indiana 46202, United States
- School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47906, United States
| | - Liang Song
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Xueru Zhao
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Kotaro Sasaki
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Jian Xie
- Department of Mechanical Energy Engineering, Purdue School of Engineering and Technology, Indiana University-Purdue University, Indianapolis, Indiana 46202, United States
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13
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Feng Y, Han W, Wang T, Chen Q, Zhang Y, Sun Y, Zhang X, Yang L, Chen S, Xu Y, Tang H, Zhang B, Wang H. Nano-Sized PtRu/C Electrocatalyst With Separated Phases and High Dispersion Improves Electrochemical Performance of Hydrogen Oxidation Reaction. Front Chem 2022; 10:885965. [PMID: 35711957 PMCID: PMC9194480 DOI: 10.3389/fchem.2022.885965] [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: 02/28/2022] [Accepted: 04/25/2022] [Indexed: 11/13/2022] Open
Abstract
Alloys and core-shell nanoparticles have recently received enormous attention which opened up new avenues for highly active catalysts. Despite considerable advances in this field, the majority of proposed approaches suffer from either complicated procedures or unstable structures, severely hindering their practical applications. Here, we successfully synthesized alloy electrocatalyst with separated phases, PtRu alloy nanoparticles robustly supported by carbon matrix (PtRu/C), using a convenient two-step solvothermal method. The constructed PtRu/C at different NaOH contents (0–1.25 mmol) were compared and electrochemical activity were evaluated by the hydrogen oxidation reaction (HOR). In contrast, the homogeneous distribution and minimum average size of Ru and Pt nanoparticles on carbon, appeared at approximately 4 nm, proving that PtRu/C-0.75 possessed abundant accessible active sites. The catalytic activities and the reaction mechanism were studied via electrochemical techniques. PtRu/C-0.75 has excellent activity due to its unique electronic structure and efficient charge transfer, with the largest j0 value of 3.68 mA cm−2 in the HOR.
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Affiliation(s)
- Yiling Feng
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, China
| | - Wei Han
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, China
- School of Chemistry and Chemical Engineering, Guizhou Minzu University, Guizhou, China
| | - Tingyu Wang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, China
- School of Chemistry and Chemical Engineering, Guizhou Minzu University, Guizhou, China
| | - Qian Chen
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, China
| | - Yan Zhang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, China
| | - Yonggang Sun
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, China
| | - Xin Zhang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, China
| | - Lin Yang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, China
| | - Song Chen
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, China
- *Correspondence: Song Chen,
| | - YuXiang Xu
- Jiangsu Ancan Technology Co., Ltd, Yancheng, China
| | - Hong Tang
- Jiangsu Ancan Technology Co., Ltd, Yancheng, China
| | - Bing Zhang
- Jiangsu Ancan Technology Co., Ltd, Yancheng, China
| | - Hao Wang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, China
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14
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Abstract
ConspectusProton-exchange membrane fuel cells (PEMFCs) are highly efficient energy storage and conversion devices. Thus, the platinum group metal (PGM)-based catalysts which are the dominant choice for the PEMFCs have received extensive interest during the past couple of decades. However, the drawbacks in the existing PGM-based catalysts (i.e., high cost, slow kinetics, poor stability, etc.) still limit their applications in fuel cells. The Pt-based core-shell catalysts potentially alleviate these issues through the low Pt loading with the associated low cost and the high corrosion resistance and further improve the oxygen reduction reaction's (ORR's) activity and stability. This Account focuses on the synthetic strategies, catalytic mechanisms, factors influencing enhanced ORR performance, and applications in PEMFCs for the Pt-based core-shell catalysts. We first highlight the synthetic strategies for Pt-based core-shell catalysts including the galvanic displacement of an underpotentially deposited non-noble metal monolayer, thermal annealing, and dealloying methods, which can be scaled-up to meet the requirements of fuel cell operations. Subsequently, catalytic mechanisms such as the self-healing mechanism in the Pt monolayer on Pd core catalysts, the pinning effect of nitrogen (N) dopants in N-doped PtNi core-shell catalysts, and the ligand effect of the ordered intermetallic structure in L10-Pt/CoPt core-shell catalysts and their synergistic effects in N-doped L10-PtNi catalysts are described in detail. The core-shell structure in the Pt-based catalysts have two main effects for enhanced ORR performance: (i) the interaction between Pt shells and core substrates can tune the electronic state of the surface Pt, thus boosting the ORR activity and stability, and (ii) the outer Pt shell with modest thickness can enhance the oxidation and dissolution resistance of the core, resulting in improved durability. We then review the recent attempts to optimize the ORR performance of the Pt-based core-shell catalysts by considering the shape, composition, surface orientation, and shell thickness. The factors influencing the ORR performance can be grouped into two categories: the effect of the core and the effect of the shell. In the former, PtM core-shell catalysts which use different non-PGM element cores (M) are summarized, and in the latter, Pt-based core-shell catalysts with different shell structures and compositions are described. The modifications of the core and/or shell structure can not only optimize the intermediate-binding energetics on the Pt surface through tuning the strain of the surface Pt, which increases the intrinsic activity and stability, but also offer a significantly decreased catalyst cost. Finally, we discuss the membrane electrode assembly performance of Pt-based core-shell catalysts in fuel cell cathodes and evaluate their potential in real PEMFCs for light-duty and heavy-duty vehicle applications. Even though some challenges to the activity and lifetime in the fuel cells remain, the Pt-based core-shell catalysts are expected to be promising for many practical PEMFC applications.
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Affiliation(s)
- Xueru Zhao
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Kotaro Sasaki
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, United States
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15
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Hollow-Structure Pt-Ni Nanoparticle Electrocatalysts for Oxygen Reduction Reaction. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27082524. [PMID: 35458722 PMCID: PMC9031076 DOI: 10.3390/molecules27082524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/08/2022] [Accepted: 04/12/2022] [Indexed: 11/27/2022]
Abstract
An electrocatalyst with high oxygen reduction reaction (ORR) activity and high stability during start–stop operation is necessary. In this paper, hollow-structure Pt-Ni electrocatalysts are investigated as ORR catalysts. After synthesis via sacrificial SiO2 template method, the electrocatalyst exhibits much higher specific activity (1.88 mA/cm2) than a commercial Pt/C catalyst. The mass activity (0.49 A/mg) is 7 times higher than the commercial Pt/C catalyst. The kinetics of the ORR is evaluated using Tafel and K-L plots. It also exhibits a higher durability than commercial Pt/C catalyst during accelerated durability test (ADT). Moreover, the electrocatalyst shows good resistance against accelerated durability test for start–stop, the specific activity and mass activity drops 34.6% and 40.8%, respectively, far better than the commercial catalyst.
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16
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Kim H, Yoo TY, Bootharaju MS, Kim JH, Chung DY, Hyeon T. Noble Metal-Based Multimetallic Nanoparticles for Electrocatalytic Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104054. [PMID: 34791823 PMCID: PMC8728832 DOI: 10.1002/advs.202104054] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/13/2021] [Indexed: 05/08/2023]
Abstract
Noble metal-based multimetallic nanoparticles (NMMNs) have attracted great attention for their multifunctional and synergistic effects, which offer numerous catalytic applications. Combined experimental and theoretical studies have enabled formulation of various design principles for tuning the electrocatalytic performance through controlling size, composition, morphology, and crystal structure of the nanoparticles. Despite significant advancements in the field, the chemical synthesis of NMMNs with ideal characteristics for catalysis, including high activity, stability, product-selectivity, and scalability is still challenging. This review provides an overview on structure-based classification and the general synthesis of NMMN electrocatalysts. Furthermore, postsynthetic treatments, such as the removal of surfactants to optimize the activity, and utilization of NMMNs onto suitable support for practical electrocatalytic applications are highlighted. In the end, future direction and challenges associated with the electrocatalysis of NMMNs are covered.
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Affiliation(s)
- Hyunjoong Kim
- Center for Nanoparticle ResearchInstitute for Basic Science (IBS)Seoul08826Republic of Korea
- School of Chemical and Biological Engineeringand Institute of Chemical ProcessesSeoul National UniversitySeoul08826Republic of Korea
| | - Tae Yong Yoo
- Center for Nanoparticle ResearchInstitute for Basic Science (IBS)Seoul08826Republic of Korea
- School of Chemical and Biological Engineeringand Institute of Chemical ProcessesSeoul National UniversitySeoul08826Republic of Korea
| | - Megalamane S. Bootharaju
- Center for Nanoparticle ResearchInstitute for Basic Science (IBS)Seoul08826Republic of Korea
- School of Chemical and Biological Engineeringand Institute of Chemical ProcessesSeoul National UniversitySeoul08826Republic of Korea
| | - Jeong Hyun Kim
- Center for Nanoparticle ResearchInstitute for Basic Science (IBS)Seoul08826Republic of Korea
- School of Chemical and Biological Engineeringand Institute of Chemical ProcessesSeoul National UniversitySeoul08826Republic of Korea
| | - Dong Young Chung
- Department of ChemistryGwangju Institute of Science and Technology (GIST)Gwangju61005Republic of Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle ResearchInstitute for Basic Science (IBS)Seoul08826Republic of Korea
- School of Chemical and Biological Engineeringand Institute of Chemical ProcessesSeoul National UniversitySeoul08826Republic of Korea
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17
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CoP/Co2P hollow spheres embedded in porous N-doped carbon as highly efficient multifunctional electrocatalyst for Zn–air battery driving water splitting device. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2021.139643] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Choi D, Jung JY, Lee MJ, Kim SH, Lee S, Lee DW, Kim DG, Kim ND, Lee KS, Kim P, Yoo SJ. Atomic Rearrangement in Core–Shell Catalysts Induced by Electrochemical Activation for Favorable Oxygen Reduction in Acid Electrolytes. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03879] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daeil Choi
- Center for Hydrogen Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Division of Energy & Environmental Technology, KIST school, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Jae Young Jung
- School of Chemical Engineering, School of Semiconductor and Chemical Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Wanju 55324, Republic of Korea
- Department of Materials Science & Engineering, Gwangju Institute of Science & Technology (GIST), Gwangju 61005, Republic of Korea
| | - Myeong Jae Lee
- Center for Hydrogen Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Seung-hoon Kim
- Center for Hydrogen Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Graduate School of Energy & Environment, Korea University, Seoul 02841, Republic of Korea
| | - Sehyun Lee
- Center for Hydrogen Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Dong Wook Lee
- Center for Hydrogen Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Dong-gun Kim
- School of Chemical Engineering, School of Semiconductor and Chemical Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Nam Dong Kim
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Wanju 55324, Republic of Korea
| | - Kug-Seung Lee
- Pohang Accelerator Laboratory, Pohang 37673, Republic of Korea
| | - Pil Kim
- School of Chemical Engineering, School of Semiconductor and Chemical Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Sung Jong Yoo
- Center for Hydrogen Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Division of Energy & Environmental Technology, KIST school, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
- KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea
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19
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Li C, Yan S, Fang J. Construction of Lattice Strain in Bimetallic Nanostructures and Its Effectiveness in Electrochemical Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2102244. [PMID: 34363320 DOI: 10.1002/smll.202102244] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 06/09/2021] [Indexed: 06/13/2023]
Abstract
Bimetallic nanocrystals (NCs), associated with various surface functions such as ligand effect, ensemble effect, and strain effect, exhibit superior electrocatalytic properties. The stress-induced surface strain effect can alter binding strength between the surface active sites and reactants as well as their intermediates, and the electrochemical performance of bimetallic NCs can be significantly facilitated by the lattice-strain modification via their morphologies, sizes, shell-thickness, surface defectiveness as well as compositions. In this review, an overview of fundamental principles, characterization techniques, and quantitative determination of the surface lattice strain is provided. Various strategies and synthesis efforts on creating lattice-strain-engineered bimetallic NCs, including the de-alloying process, atomic layer-by-layer deposition, thermal treatment evolution, one-pot synthesis, and other efforts are also discussed. It is further outlined how the lattice strain effect promotes electrochemical catalysis through the selected case studies. The reactions on oxygen reduction reaction, small molecular oxidation, water splitting reaction, and electrochemical carbon dioxide reduction reactions are focused. In particular, studies of lattice strain arisen from core-shell nanostructure and defectiveness are highlighted. Lastly, the potential challenges are summarized and the prospects of lattice-strain-based engineering on bimetallic nanocatalysts with suggestion and guidance of the future electrocatalyst design are envisioned.
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Affiliation(s)
- Can Li
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, 13902, USA
| | - Shaohui Yan
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, 13902, USA
| | - Jiye Fang
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, 13902, USA
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20
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Sun Y, Polani S, Luo F, Ott S, Strasser P, Dionigi F. Advancements in cathode catalyst and cathode layer design for proton exchange membrane fuel cells. Nat Commun 2021; 12:5984. [PMID: 34645781 PMCID: PMC8514433 DOI: 10.1038/s41467-021-25911-x] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 09/09/2021] [Indexed: 11/17/2022] Open
Abstract
Proton exchange membrane fuel cells have been recently developed at an increasing pace as clean energy conversion devices for stationary and transport sector applications. High platinum cathode loadings contribute significantly to costs. This is why improved catalyst and support materials as well as catalyst layer design are critically needed. Recent advances in nanotechnologies and material sciences have led to the discoveries of several highly promising families of materials. These include platinum-based alloys with shape-selected nanostructures, platinum-group-metal-free catalysts such as metal-nitrogen-doped carbon materials and modification of the carbon support to control surface properties and ionomer/catalyst interactions. Furthermore, the development of advanced characterization techniques allows a deeper understanding of the catalyst evolution under different conditions. This review focuses on all these recent developments and it closes with a discussion of future research directions in the field. The high platinum loadings at the cathodes of proton exchange membrane fuel cells significantly contribute to the cost of these clean energy conversion devices. Here, the authors critically review and discuss recent developments on low- and non-platinum-based cathode catalysts and catalyst layers.
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Affiliation(s)
- Yanyan Sun
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory, Department of Chemistry, Chemical Engineering Division, Technical University Berlin, Straße des 17. Juni 124, 10623, Berlin, Germany.,School of Materials Science and Engineering, Central South University, 410083, Changsha, Hunan, China
| | - Shlomi Polani
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory, Department of Chemistry, Chemical Engineering Division, Technical University Berlin, Straße des 17. Juni 124, 10623, Berlin, Germany
| | - Fang Luo
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory, Department of Chemistry, Chemical Engineering Division, Technical University Berlin, Straße des 17. Juni 124, 10623, Berlin, Germany
| | - Sebastian Ott
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory, Department of Chemistry, Chemical Engineering Division, Technical University Berlin, Straße des 17. Juni 124, 10623, Berlin, Germany
| | - Peter Strasser
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory, Department of Chemistry, Chemical Engineering Division, Technical University Berlin, Straße des 17. Juni 124, 10623, Berlin, Germany.
| | - Fabio Dionigi
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory, Department of Chemistry, Chemical Engineering Division, Technical University Berlin, Straße des 17. Juni 124, 10623, Berlin, Germany.
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21
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Polani S, MacArthur KE, Klingenhof M, Wang X, Paciok P, Pan L, Feng Q, Kormányos A, Cherevko S, Heggen M, Strasser P. Size and Composition Dependence of Oxygen Reduction Reaction Catalytic Activities of Mo-Doped PtNi/C Octahedral Nanocrystals. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01761] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Shlomi Polani
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
| | - Katherine E. MacArthur
- Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Malte Klingenhof
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
| | - Xingli Wang
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
| | - Paul Paciok
- Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Lujin Pan
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
| | - Quanchen Feng
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
| | - Attila Kormányos
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, 91058 Erlangen, Germany
| | - Serhiy Cherevko
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, 91058 Erlangen, Germany
| | - Marc Heggen
- Ernst-Ruska Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Peter Strasser
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
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22
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Kawaguchi T, Komanicky V, Latyshev V, Cha W, Maxey ER, Harder R, Ichitsubo T, You H. Electrochemically Induced Strain Evolution in Pt-Ni Alloy Nanoparticles Observed by Bragg Coherent Diffraction Imaging. NANO LETTERS 2021; 21:5945-5951. [PMID: 34251215 DOI: 10.1021/acs.nanolett.1c00778] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Strain is known to enhance the activity of the oxygen reduction reaction in catalytic platinum alloy nanoparticles, whose inactivity is the primary impediment to efficient fuel cells and metal-air batteries. Bragg coherent diffraction imaging (BCDI) was employed to reveal the strain evolution during the voltammetric cycling in Pt-Ni alloy nanoparticles composed of Pt2Ni3, Pt1Ni1, and Pt3Ni2. Analysis of the 3D strain images using a core-shell model shows that the strain as large as 5% is induced on Pt-rich shells due to Ni dissolution. The composition dependency of the strain on the shells is in excellent agreement with that of the catalytic activity. The present study demonstrates that BCDI enables quantitative determination of the strain on alloy nanoparticles during electrochemical reactions, which provides a means to exploit surface strain to design a wide range of electrocatalysts.
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Affiliation(s)
- Tomoya Kawaguchi
- Institute for Materials Research, Tohoku University, Sendai, 9808577, Japan
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | | | | | - Wonsuk Cha
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Evan R Maxey
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Ross Harder
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Tetsu Ichitsubo
- Institute for Materials Research, Tohoku University, Sendai, 9808577, Japan
| | - Hoydoo You
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
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23
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Performance of Pd@FeCo Catalyst in Anion Exchange Membrane Alcohol Fuel Cells. Electrocatalysis (N Y) 2021. [DOI: 10.1007/s12678-021-00655-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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24
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Zhu H, Huang Y, Ren J, Zhang B, Ke Y, Jen AK, Zhang Q, Wang X, Liu Q. Bridging Structural Inhomogeneity to Functionality: Pair Distribution Function Methods for Functional Materials Development. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2003534. [PMID: 33747741 PMCID: PMC7967088 DOI: 10.1002/advs.202003534] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/22/2020] [Indexed: 05/19/2023]
Abstract
The correlation between structure and function lies at the heart of materials science and engineering. Especially, modern functional materials usually contain inhomogeneities at an atomic level, endowing them with interesting properties regarding electrons, phonons, and magnetic moments. Over the past few decades, many of the key developments in functional materials have been driven by the rapid advances in short-range crystallographic techniques. Among them, pair distribution function (PDF) technique, capable of utilizing the entire Bragg and diffuse scattering signals, stands out as a powerful tool for detecting local structure away from average. With the advent of synchrotron X-rays, spallation neutrons, and advanced computing power, the PDF can quantitatively encode a local structure and in turn guide atomic-scale engineering in the functional materials. Here, the PDF investigations in a range of functional materials are reviewed, including ferroelectrics/thermoelectrics, colossal magnetoresistance (CMR) magnets, high-temperature superconductors (HTSC), quantum dots (QDs), nano-catalysts, and energy storage materials, where the links between functions and structural inhomogeneities are prominent. For each application, a brief description of the structure-function coupling will be given, followed by selected cases of PDF investigations. Before that, an overview of the theory, methodology, and unique power of the PDF method will be also presented.
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Affiliation(s)
- He Zhu
- Department of PhysicsCity University of Hong KongHong Kong999077P. R. China
| | - Yalan Huang
- Department of PhysicsCity University of Hong KongHong Kong999077P. R. China
| | - Jincan Ren
- Department of PhysicsCity University of Hong KongHong Kong999077P. R. China
| | - Binghao Zhang
- Department of PhysicsCity University of Hong KongHong Kong999077P. R. China
| | - Yubin Ke
- China Spallation Neutron SourceInstitute of High Energy PhysicsChinese Academy of ScienceDongguan523000P. R. China
| | - Alex K.‐Y. Jen
- Department of Materials Science and EngineeringCity University of Hong KongHong Kong999077P. R. China
| | - Qiang Zhang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and TechnologyDepartment of Chemical EngineeringTsinghua UniversityBeijing100084P. R. China
| | - Xun‐Li Wang
- Department of PhysicsCity University of Hong KongHong Kong999077P. R. China
- Shenzhen Research InstituteCity University of Hong KongShenzhen518057P. R. China
| | - Qi Liu
- Department of PhysicsCity University of Hong KongHong Kong999077P. R. China
- Shenzhen Research InstituteCity University of Hong KongShenzhen518057P. R. China
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25
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Song J, Zhong H, Wu H, Xiao Z, Song H, Shu T, Zeng J. Robust and Efficient Pd–Cu Bimetallic Catalysts with Porous Structure for Formic Acid Oxidation and a Mechanistic Study of Electrochemical Dealloying. Electrocatalysis (N Y) 2021. [DOI: 10.1007/s12678-020-00632-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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26
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Abstract
The evolution of Pi3Ni–NiO nanoparticles was visualized in a liquid cell.
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Affiliation(s)
- Junyu Zhang
- Instrumental Analysis Center
- Huaqiao University
- Xiamen 361021
- China
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27
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Hao J, Hu H, Dong Y, Hu J, Sang X, Duan F, Lu S, Zhu H, Du M. Interface engineering in core–shell Co 9S 8@MoS 2 nanocrystals induces enhanced hydrogen evolution in acidic and alkaline media. NEW J CHEM 2021. [DOI: 10.1039/d1nj01221e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbon nanofiber-supported Co9S8 nanocrystals fully (F-Co9S8@MoS2/CNFs) and semi (S-Co9S8@MoS2/CNFs) wrapped by MoS2 with precise interfaces were successfully synthesized.
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Affiliation(s)
- Jiace Hao
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Hongyin Hu
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Yuan Dong
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Jingwen Hu
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Xinxin Sang
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Fang Duan
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Shuanglong Lu
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Han Zhu
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Mingliang Du
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
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28
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Zhang J, Zhao P. Atomic imaging of the motion and transformation of Pt3Ni nanoparticles in liquids. CrystEngComm 2021. [DOI: 10.1039/d1ce00216c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we used liquid cell TEM to observe the motion and transformation pathways of Pt3Ni nanoparticles in solution by systematically changing the electron beam dose rate.
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Affiliation(s)
- Junyu Zhang
- Instrumental Analysis Center
- Laboratory and Equipment Management Department
- Huaqiao University
- Xiamen 361021
- China
| | - Peng Zhao
- Instrumental Analysis Center
- Laboratory and Equipment Management Department
- Huaqiao University
- Xiamen 361021
- China
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29
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Ma Z, Cano ZP, Yu A, Chen Z, Jiang G, Fu X, Yang L, Wu T, Bai Z, Lu J. Enhancing Oxygen Reduction Activity of Pt‐based Electrocatalysts: From Theoretical Mechanisms to Practical Methods. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003654] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhong Ma
- Department of Chemical Engineering Waterloo Institute for Nanotechnology Waterloo Institute for Sustainable Energy University of Waterloo Waterloo Ontario N2L 3G1 Canada
| | - Zachary P. Cano
- Department of Chemical Engineering Waterloo Institute for Nanotechnology Waterloo Institute for Sustainable Energy University of Waterloo Waterloo Ontario N2L 3G1 Canada
| | - Aiping Yu
- Department of Chemical Engineering Waterloo Institute for Nanotechnology Waterloo Institute for Sustainable Energy University of Waterloo Waterloo Ontario N2L 3G1 Canada
| | - Zhongwei Chen
- Department of Chemical Engineering Waterloo Institute for Nanotechnology Waterloo Institute for Sustainable Energy University of Waterloo Waterloo Ontario N2L 3G1 Canada
| | - Gaopeng Jiang
- Department of Chemical Engineering Waterloo Institute for Nanotechnology Waterloo Institute for Sustainable Energy University of Waterloo Waterloo Ontario N2L 3G1 Canada
| | - Xiaogang Fu
- Department of Chemical Engineering Waterloo Institute for Nanotechnology Waterloo Institute for Sustainable Energy University of Waterloo Waterloo Ontario N2L 3G1 Canada
| | - Lin Yang
- School of Chemistry and Chemical Engineering Key Laboratory of Green Chemical Media and Reactions Ministry of Education, Henan Normal University Xinxiang 453007 China
| | - Tianpin Wu
- X-ray Science Division Advanced Photon Sources Argonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA
| | - Zhengyu Bai
- School of Chemistry and Chemical Engineering Key Laboratory of Green Chemical Media and Reactions Ministry of Education, Henan Normal University Xinxiang 453007 China
| | - Jun Lu
- Chemical Sciences and Engineering Division Argonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA
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30
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Ma Z, Cano ZP, Yu A, Chen Z, Jiang G, Fu X, Yang L, Wu T, Bai Z, Lu J. Enhancing Oxygen Reduction Activity of Pt-based Electrocatalysts: From Theoretical Mechanisms to Practical Methods. Angew Chem Int Ed Engl 2020; 59:18334-18348. [PMID: 32271975 DOI: 10.1002/anie.202003654] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Indexed: 11/06/2022]
Abstract
Pt-based electrocatalysts are considered as one of the most promising choices to facilitate the oxygen reduction reaction (ORR), and the key factor enabling their success is to reduce the required amount of platinum. Herein, we focus on illuminating both the theoretical mechanisms which enable enhanced and sustained ORR activity and the practical methods to achieve them in catalysts. The various multi-step pathways of ORR are firstly reviewed and the rate-determining steps based on the reaction intermediates and their binding energies are analyzed. We then explain the critical aspects of Pt-based electrocatalysts to tune oxygen reduction properties from the viewpoints of active sites exposure and altering the surface electronic structure, and further summarize representative research progress towards practically achieving these activity enhancements with a focus on platinum size reduction, shape control and core Pt elimination methods. We finally outline the remaining challenges and provide our perspectives with regard to further enhancing their activities.
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Affiliation(s)
- Zhong Ma
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology Waterloo, Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Zachary P Cano
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology Waterloo, Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Aiping Yu
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology Waterloo, Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Zhongwei Chen
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology Waterloo, Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Gaopeng Jiang
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology Waterloo, Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Xiaogang Fu
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology Waterloo, Institute for Sustainable Energy, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Lin Yang
- School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, 453007, China
| | - Tianpin Wu
- X-ray Science Division, Advanced Photon Sources, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL, 60439, USA
| | - Zhengyu Bai
- School of Chemistry and Chemical Engineering, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, 453007, China
| | - Jun Lu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL, 60439, USA
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31
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Bian Y, Wang H, Gao Z, Hu J, Liu D, Dai L. A facile approach to high-performance trifunctional electrocatalysts by substrate-enhanced electroless deposition of Pt/NiO/Ni on carbon nanotubes. NANOSCALE 2020; 12:14615-14625. [PMID: 32614020 DOI: 10.1039/d0nr03378b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Trifunctional electrocatalysts for the oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) are crucial for many electrochemical devices. Herein, novel trifunctional electrocatalysts of a hierarchically-structured Pt/NiO/Ni/CNT with ultrasmall Pt nanoparticles (∼2 nm) were synthesized via substrate-enhanced electroless deposition. The resulting catalysts exhibited a higher ORR activity (half-wave potential at 0.942 V) than that of the benchmark commercial Pt/C (20 wt%) and a similar OER activity (overpotential of 350 mV at 10 mA cm-2) to that of RuO2 in alkaline media. Moreover, the newly-developed Pt/NiO/Ni/CNT catalysts also showed a high mass activity superior to Pt/C towards the HER in both acid and alkaline electrolytes. The Pt/NiO/Ni/CNT catalysts, when used for overall water splitting, self-powered by two Zn-air batteries with the Pt/NiO/Ni/CNT air electrodes connected into series, displayed superb performance with 1.61 V at 10 mA cm-2. This work represents a breakthrough in the development of facile approaches to trifunctional catalysts from low-cost Earth-abundant materials for efficient energy conversion and storage.
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Affiliation(s)
- Yaru Bian
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China.
| | - Hao Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China.
| | - Zhi Gao
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China.
| | - Jintang Hu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China.
| | - Dong Liu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China.
| | - Liming Dai
- School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
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32
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Zhu F, Luo L, Wu A, Wang C, Cheng X, Shen S, Ke C, Yang H, Zhang J. Improving the High-Current-Density Performance of PEMFC through Much Enhanced Utilization of Platinum Electrocatalysts on Carbon. ACS APPLIED MATERIALS & INTERFACES 2020; 12:26076-26083. [PMID: 32412233 DOI: 10.1021/acsami.0c06981] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We report an effective approach to the synthesis of high-content and high-dispersion Pt nanoparticles (NPs) on XC-72 carbon black as a cathode electrocatalyst with improved high-current-density performance in proton exchange membrane fuel cells (PEMFCs). While exceptionally high catalytic activity for oxygen reduction reaction (ORR) was reported based on the rotating disk electrode (RDE) technique, such catalysts do not deliver nearly the same level of performance in PEMFC due to the lack of optimized design of catalyst structures on carbon support. We recently developed a synergistic synthesis method to make exceptionally high-content and finely dispersed Pt catalysts, which showed the highest Pt-electroactive surface area and the highest Pt mass activity for ORR among the electrocatalysts tested. More importantly, the membrane electrode assembly (MEA) made with this catalyst showed excellent performance at current densities higher than 1200 mA cm-2 in a hydrogen-air PEMFC measurement. 195Pt NMR was used to analyze the molecular structures of the metal precursors and to understand the mechanisms of the formation of Pt catalysts at high dispersity and uniformity.
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Affiliation(s)
- Fengjuan Zhu
- Institute of Fuel Cells, MOE Key Laboratory of Power Machinery & Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Liuxuan Luo
- Institute of Fuel Cells, MOE Key Laboratory of Power Machinery & Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Aiming Wu
- Institute of Fuel Cells, MOE Key Laboratory of Power Machinery & Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Chao Wang
- Institute of Fuel Cells, MOE Key Laboratory of Power Machinery & Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Xiaojing Cheng
- Institute of Fuel Cells, MOE Key Laboratory of Power Machinery & Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Shuiyun Shen
- Institute of Fuel Cells, MOE Key Laboratory of Power Machinery & Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Changchun Ke
- Institute of Fuel Cells, MOE Key Laboratory of Power Machinery & Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Hong Yang
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 206 Roger Adams Laboratory, MC-712, 600 South Mathews Avenue, Urbana, Illinois61801, United States
| | - Junliang Zhang
- Institute of Fuel Cells, MOE Key Laboratory of Power Machinery & Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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33
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Yao X, Wei Y, Wang Z, Gan L. Revealing the Role of Surface Composition on the Particle Mobility and Coalescence of Carbon-Supported Pt Alloy Fuel Cell Catalysts by In Situ Heating (S)TEM. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01765] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xiaozhang Yao
- Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, People’s Republic of China
| | - Yinping Wei
- Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, People’s Republic of China
| | - Zhongxiang Wang
- Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, People’s Republic of China
| | - Lin Gan
- Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen 518055, People’s Republic of China
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34
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Guisbiers G, Mendoza-Perez R. Magnetic, thermal and martensitic phase transitions in Ni-Co nanoparticles. NANOTECHNOLOGY 2020; 31:295702. [PMID: 32289753 DOI: 10.1088/1361-6528/ab88ef] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The nickel-cobalt system is an important alloy in nanotechnology because of its ferromagnetic properties, high thermal stability and shape memory effect. At the nanoscale, its physico-chemical properties become size-, shape- and composition- dependent. However, those properties are still mostly unknown at the nanoscale. Therefore, this manuscript fills this gap in knowledge. Indeed, when the size of the alloy is reduced, the entire phase diagram undergoes a vertical shift downward to lower temperatures, and a tilt caused by a larger size effect affecting cobalt than nickel. Among the most commonly observed shapes, the thermal stability of nickel-cobalt nanoparticles was determined as a function of their size and composition. Furthermore, the ferromagnetic-paramagnetic phase transition and martensitic transformation for those shapes were calculated as a function of the nickel-cobalt alloy composition. As expected, the ferromagnetic and martensitic regions shrunk at the nanoscale; but the martensitic transformation was less affected by size effects compared to magnetic and thermal (melting) transitions.
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Affiliation(s)
- Grégory Guisbiers
- Department of Physics and Astronomy, University of Arkansas at Little Rock, 2801 South University Avenue, Little Rock, AR 72204, United States of America
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35
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Holderer O, Carmo M, Shviro M, Lehnert W, Noda Y, Koizumi S, Appavou MS, Appel M, Frielinghaus H. Fuel Cell Electrode Characterization Using Neutron Scattering. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E1474. [PMID: 32213913 PMCID: PMC7143551 DOI: 10.3390/ma13061474] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/13/2020] [Accepted: 03/19/2020] [Indexed: 11/23/2022]
Abstract
Electrochemical energy conversion and storage is key for the use of regenerative energies at large scale. A thorough understanding of the individual components, such as the ion conducting membrane and the electrode layers, can be obtained with scattering techniques on atomic to molecular length scales. The largely heterogeneous electrode layers of High-Temperature Polymer Electrolyte Fuel Cells are studied in this work with small- and wide-angle neutron scattering at the same time with the iMATERIA diffractometer at the spallation neutron source at J-PARC, opening a view on structural properties on atomic to mesoscopic length scales. Recent results on the proton mobility from the same samples measured with backscattering spectroscopy are put into relation with the structural findings.
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Affiliation(s)
- Olaf Holderer
- Forschungszentrum Jülich, Jülich Centre for Neutron Science (JCNS) at MLZ, 85747 Garching, Germany; (M.-S.A.); (M.A.); (H.F.)
| | - Marcelo Carmo
- Forschungszentrum Jülich, Institute of Energy and Climate Research, IEK-14: Electrochemical Process Engineering, 52425 Jülich, Germany; (M.C.); (M.S.); (W.L.)
| | - Meital Shviro
- Forschungszentrum Jülich, Institute of Energy and Climate Research, IEK-14: Electrochemical Process Engineering, 52425 Jülich, Germany; (M.C.); (M.S.); (W.L.)
| | - Werner Lehnert
- Forschungszentrum Jülich, Institute of Energy and Climate Research, IEK-14: Electrochemical Process Engineering, 52425 Jülich, Germany; (M.C.); (M.S.); (W.L.)
- Faculty of Mechanical Engineering, RWTH Aachen University, 52062 Aachen, Germany
| | - Yohei Noda
- Ibaraki University, D302 IQBRC 162-1, Shirakata, Tokai-mura, Naka-gun, Ibaraki 305-8577, Japan; (Y.N.); (S.K.)
| | - Satoshi Koizumi
- Ibaraki University, D302 IQBRC 162-1, Shirakata, Tokai-mura, Naka-gun, Ibaraki 305-8577, Japan; (Y.N.); (S.K.)
| | - Marie-Sousai Appavou
- Forschungszentrum Jülich, Jülich Centre for Neutron Science (JCNS) at MLZ, 85747 Garching, Germany; (M.-S.A.); (M.A.); (H.F.)
| | - Marina Appel
- Forschungszentrum Jülich, Jülich Centre for Neutron Science (JCNS) at MLZ, 85747 Garching, Germany; (M.-S.A.); (M.A.); (H.F.)
| | - Henrich Frielinghaus
- Forschungszentrum Jülich, Jülich Centre for Neutron Science (JCNS) at MLZ, 85747 Garching, Germany; (M.-S.A.); (M.A.); (H.F.)
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36
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Zalitis C, Kucernak A, Lin X, Sharman J. Electrochemical Measurement of Intrinsic Oxygen Reduction Reaction Activity at High Current Densities as a Function of Particle Size for Pt4–xCox/C (x = 0, 1, 3) Catalysts. ACS Catal 2020. [DOI: 10.1021/acscatal.9b04750] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Christopher Zalitis
- Johnson Matthey Technical Centre, Blounts Court, Sonning Common, Reading RG4 9NH, United Kingdom
| | - Anthony Kucernak
- Department of Chemistry, Imperial College London, London SW7 2AZ, United Kingdom
| | - Xiaoqian Lin
- Department of Chemistry, Imperial College London, London SW7 2AZ, United Kingdom
| | - Jonathan Sharman
- Johnson Matthey Technical Centre, Blounts Court, Sonning Common, Reading RG4 9NH, United Kingdom
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37
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Nadeem M, Yasin G, Arif M, Bhatti MH, Sayin K, Mehmood M, Yunus U, Mehboob S, Ahmed I, Flörke U. Pt-Ni@PC900 Hybrid Derived from Layered-Structure Cd-MOF for Fuel Cell ORR Activity. ACS OMEGA 2020; 5:2123-2132. [PMID: 32064373 PMCID: PMC7016934 DOI: 10.1021/acsomega.9b02741] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Accepted: 12/06/2019] [Indexed: 05/22/2023]
Abstract
Fuel cell technology is the supreme alternate option for the replacement of fossil fuel in the current era. Pt alloys can perform well as fuel cell electrodes for being used as catalytic materials to perform the very notorious oxygen reduction reaction. In this regard, first, a layered metal-organic framework with empirical formula [C8H10CdO7] n ·4H2O is synthesized and characterized using various experimental and theoretical techniques. Then, a nanostructured porous carbon material with a sheet morphology (PC900) having a high BET surface area of 877 m2 g-1 is fabricated by an inert-atmosphere thermal treatment of the framework upon heating up to 900 °C. Pt and Ni nanoparticles are embedded into PC900 to prepare a homogenized hybrid functional material, i.e., Pt-Ni@PC900. The Pt-Ni@PC900 hybrid is proved to be an excellent ORR catalyst in terms of half-wave potential and limiting current density with 7% Pt loading compared with the commercially available 20% Pt/C catalyst. Pt-Ni@PC900 also shows stability of current up to 12 h with only a very small variation in current. This work highlights the importance of Pt alloys in future large-scale commercial applications of fuel cells.
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Affiliation(s)
- Muhammad Nadeem
- Department
of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
- State
Key Laboratory of Chemical Resource Engineering, Institute of Science,
and College of Energy, Beijing University
of Chemical Technology, Beijing 100029, P. R. China
- National
Center for Nanotechnology, Department of Metallurgy and Materials
Engineering, Pakistan Institute of Engineering
and Applied Sciences (PIEAS), Nilore, Islamabad 45650, Pakistan
| | - Ghulam Yasin
- State
Key Laboratory of Chemical Resource Engineering, Institute of Science,
and College of Energy, Beijing University
of Chemical Technology, Beijing 100029, P. R. China
| | - Muhammad Arif
- State
Key Laboratory of Chemical Resource Engineering, Institute of Science,
and College of Energy, Beijing University
of Chemical Technology, Beijing 100029, P. R. China
| | - Moazzam H. Bhatti
- Department
of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
- E-mail . Phone: 0092519057262
| | - Koray Sayin
- Department
of Chemistry, Institute of Science, Cumhuriyet
University, Sivas 58140, Turkey
| | - Mazhar Mehmood
- National
Center for Nanotechnology, Department of Metallurgy and Materials
Engineering, Pakistan Institute of Engineering
and Applied Sciences (PIEAS), Nilore, Islamabad 45650, Pakistan
| | - Uzma Yunus
- Department
of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
| | - Shoaib Mehboob
- National
Center for Nanotechnology, Department of Metallurgy and Materials
Engineering, Pakistan Institute of Engineering
and Applied Sciences (PIEAS), Nilore, Islamabad 45650, Pakistan
| | - Imtiaz Ahmed
- Department
of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
| | - Ulrich Flörke
- Anorganische
und Analytische Chemie, Fakultät für Naturwissenschaften, Universität Paderborn, Warburgerstrasse 100, Paderborn D-33098, Germany
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38
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Kong Z, Maswadeh Y, Vargas JA, Shan S, Wu ZP, Kareem H, Leff AC, Tran DT, Chang F, Yan S, Nam S, Zhao X, Lee JM, Luo J, Shastri S, Yu G, Petkov V, Zhong CJ. Origin of High Activity and Durability of Twisty Nanowire Alloy Catalysts under Oxygen Reduction and Fuel Cell Operating Conditions. J Am Chem Soc 2020; 142:1287-1299. [PMID: 31885267 DOI: 10.1021/jacs.9b10239] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The ability to control the surface composition and morphology of alloy catalysts is critical for achieving high activity and durability of catalysts for oxygen reduction reaction (ORR) and fuel cells. This report describes an efficient surfactant-free synthesis route for producing a twisty nanowire (TNW) shaped platinum-iron (PtFe) alloy catalyst (denoted as PtFe TNWs) with controllable bimetallic compositions. PtFe TNWs with an optimal initial composition of ∼24% Pt are shown to exhibit the highest mass activity (3.4 A/mgPt, ∼20 times higher than that of commercial Pt catalyst) and the highest durability (<2% loss of activity after 40 000 cycles and <30% loss after 120 000 cycles) among all PtFe-based nanocatalysts under ORR or fuel cell operating conditions reported so far. Using ex situ and in situ synchrotron X-ray diffraction coupled with atomic pair distribution function (PDF) analysis and 3D modeling, the PtFe TNWs are shown to exhibit mixed face-centered cubic (fcc)-body-centered cubic (bcc) alloy structure and a significant lattice strain. A striking finding is that the activity strongly depends on the composition of the as-synthesized catalysts and this dependence remains unchanged despite the evolution of the composition of the different catalysts and their lattice constants under ORR or fuel cell operating conditions. Notably, dealloying under fuel cell operating condition starts at phase-segregated domain sites leading to a final fcc alloy structure with subtle differences in surface morphology. Due to a subsequent realloying and the morphology of TNWs, the surface lattice strain observed with the as-synthesized catalysts is largely preserved. This strain and the particular facets exhibited by the TNWs are believed to be responsible for the observed activity and durability enhancements. These findings provide new insights into the correlation between the structure, activity, and durability of nanoalloy catalysts and are expected to energize the ongoing effort to develop highly active and durable low-Pt-content nanowire catalysts by controlling their alloy structure and morphology.
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Affiliation(s)
- Zhijie Kong
- College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , China.,Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Yazan Maswadeh
- Department of Physics , Central Michigan University , Mt. Pleasant , Michigan 48859 , United States
| | - Jorge A Vargas
- Department of Physics , Central Michigan University , Mt. Pleasant , Michigan 48859 , United States
| | - Shiyao Shan
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Zhi-Peng Wu
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Haval Kareem
- CCDC Army Research Laboratory , FCDD-RLS-DE , Adelphi , Maryland 20783 , United States
| | - Asher C Leff
- CCDC Army Research Laboratory , FCDD-RLS-DE , Adelphi , Maryland 20783 , United States
| | - Dat T Tran
- CCDC Army Research Laboratory , FCDD-RLS-DE , Adelphi , Maryland 20783 , United States
| | - Fangfang Chang
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Shan Yan
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Sanghyun Nam
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Xingfang Zhao
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Jason M Lee
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Jin Luo
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Sarvjit Shastri
- X-ray Science Division, Advanced Photon Source , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Gang Yu
- College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , China
| | - Valeri Petkov
- Department of Physics , Central Michigan University , Mt. Pleasant , Michigan 48859 , United States
| | - Chuan-Jian Zhong
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
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39
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Liu Y, You H, Kimmel YC, Esposito DV, Chen JG, Moffat TP. Self-terminating electrodeposition of Pt on WC electrocatalysts. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2020; 504:10.1016/j.apsusc.2019.144472. [PMID: 33311853 PMCID: PMC7724966 DOI: 10.1016/j.apsusc.2019.144472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Self-terminated electrochemical deposition is used to grow Pt nanoparticles on tungsten monocarbide (WC) from a pH 4 electrolyte of 3 mmol/L K2PtCl4-0.5 mol/L NaCl. An unconventional potentiodynamic deposition program is used where nucleation is promoted at large overpotentials followed by growth termination at still larger overpotentials to yield a high coverage of Pt nanoparticles. Following three deposition cycles between -0.8 VSCE and -0.45 VSCE, the surface is covered by a monolayer equivalent charge of Pt in the form of ≈3 × 1011 particles/cm2 that are ≈6.7 ± 1.1 nm in diameter. The number and size of nanoparticles increase monotonically for five deposition cycles. Area-normalized kinetics for hydrogen evolution (HER) and oxidation (HOR) on Pt-WC were determined in 0.5 mol/L H2SO4. For the lowest surface coverage of Pt nanoparticles on WC, ≈ 0.01, an exchange current density of ≈ 100 mA/cm2 is achieved, comparable to the highest reported values for Pt nanoparticles and ultramicroelectrodes. The area normalized apparent exchange current density decreases with increasing Pt coverage as the relative contribution of point versus planar diffusion decreases. Self-terminated electrodeposition of Pt provides an attractive approach to achieving ultra-low loadings of well-dispersed Pt nanoparticles on a non-precious metal support like WC.
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Affiliation(s)
- Yihua Liu
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Hoydoo You
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
- Corresponding authors. (H. You), (T.P. Moffat)
| | - Yannick C. Kimmel
- Department of Chemical Engineering, Columbia University, New York, NY 10027, USA
| | - Daniel V. Esposito
- Department of Chemical Engineering, Columbia University, New York, NY 10027, USA
| | - Jingguang G. Chen
- Department of Chemical Engineering, Columbia University, New York, NY 10027, USA
| | - Thomas P. Moffat
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
- Corresponding authors. (H. You), (T.P. Moffat)
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40
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Yang T, Wang Y, Wei W, Ding X, He M, Yu T, Zhao H, Zhang D. Synthesis of octahedral Pt-Ni-Ir yolk-shell nanoparticles and their catalysis in oxygen reduction and methanol oxidization under both acidic and alkaline conditions. NANOSCALE 2019; 11:23206-23216. [PMID: 31782479 DOI: 10.1039/c9nr07235g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Fuel cells are expected to be one of the most promising alternatives to the increasingly scarce fossil fuels, and Pt is the most commonly used catalyst for anodic and cathodic electrochemical reactions. To realize large-scale commercialization, it is most urgent to improve the efficiency of Pt and reduce the cost. Here, we synthesized an octahedral Pt-Ni-Ir yolk-shell catalyst through stepwise co-deposition (SCD), surface-limited Pt deposition (SLPD) and Ni-coordinating etching (NCE) processes. Experimental studies showed that the catalytic activities of the as-prepared trimetal yolk-shell catalyst were several times higher than that of the commercial Pt/C towards oxygen reduction and methanol oxidization under both acidic and alkaline conditions. This work may be extended to designing other multimetallic functional materials with complex hierarchical nanostructures, which is conducive to greatly enhancing the performance.
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Affiliation(s)
- Tao Yang
- School of Chemical Engineering, Jiangsu Ocean University, Lianyungang 222005, China.
| | - Yihui Wang
- School of Chemical Engineering, Jiangsu Ocean University, Lianyungang 222005, China.
| | - Wenxian Wei
- Testing Center, Yangzhou University, Yangzhou 225009, China
| | - Xinran Ding
- School of Chemical Engineering, Jiangsu Ocean University, Lianyungang 222005, China.
| | - Maoshuai He
- State Key Laboratory of Eco-Chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China and School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Tingting Yu
- School of Chemical Engineering, Jiangsu Ocean University, Lianyungang 222005, China.
| | - Hong Zhao
- School of Chemical Engineering, Jiangsu Ocean University, Lianyungang 222005, China.
| | - Dongen Zhang
- School of Chemical Engineering, Jiangsu Ocean University, Lianyungang 222005, China.
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41
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Safo IA, Dosche C, Özaslan M. Effects of Capping Agents on the Oxygen Reduction Reaction Activity and Shape Stability of Pt Nanocubes. Chemphyschem 2019; 20:3010-3023. [PMID: 31538400 PMCID: PMC6899920 DOI: 10.1002/cphc.201900653] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/26/2019] [Indexed: 11/11/2022]
Abstract
We investigated the formation of Pt nanocubes (NCs) and their electrocatalytic oxygen reduction reaction (ORR) properties and structural stability using two different capping agents, namely, polyvinylpyrrolidone (PVP) and oleylamine (OAm). The mono-dispersity of the obtained Pt NCs and their interactions with PVP and OAm were analyzed by transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), Fourier-transformed infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The TEM data show a high mono-dispersity (82 %) and a large mean particle size (9-10 nm) for the Pt NCs obtained by the oleylamine-assisted method compared to those prepared via the PVP-assisted procedure (68 %, 6-7 nm). FTIR, XPS, and TGA data show that PVP and OAm still remain at the Pt surface, despite washing. Interestingly, the OAm-capped Pt NCs show significantly higher electrochemically active surface area (ECSA) and ORR activity than the PVP-capped ones. An accelerated stress protocol, however, reveals that the OAm-capped NCs possess a poor structural stability during electrochemical cycling. The loss of a defined surface arrangement in the NCs is connected with a transformation into a near-spherical particle shape. In contrast, the PVP-capped NCs mainly retain their particle shape due to their strong capping behavior. In addition, we have developed a degradation model for NCs as a function of electrochemical parameters such as upper potential and cycle number. Altogether, we provide fundamental insights into the electronic interactions between capping agent and Pt NCs and the role of the adsorption strength of the capping agent in improving the electrochemical ORR performance as well as the structural stability of shape-controlled nanoparticles.
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Affiliation(s)
- Isaac A. Safo
- Physical ChemistryCarl von Ossietzky University of Oldenburg26129OldenburgGermany
| | - Carsten Dosche
- Physical ChemistryCarl von Ossietzky University of Oldenburg26129OldenburgGermany
| | - Mehtap Özaslan
- Physical ChemistryCarl von Ossietzky University of Oldenburg26129OldenburgGermany
- Institute of Technical ChemistryTechnical University of Braunschweig38106BraunschweigGermany
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42
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Wang Z, Fantin M, Sobieski J, Wang Z, Yan J, Lee J, Liu T, Li S, Olszewski M, Bockstaller MR, Matyjaszewski K. Pushing the Limit: Synthesis of SiO2-g-PMMA/PS Particle Brushes via ATRP with Very Low Concentration of Functionalized SiO2–Br Nanoparticles. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01973] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
| | | | | | - Zhenhua Wang
- Xi’an Institute of Biomedical Materials and Engineering, Northwestern Polytechnical University, Xi’an 710072, China
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43
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Xie C, Niu Z, Kim D, Li M, Yang P. Surface and Interface Control in Nanoparticle Catalysis. Chem Rev 2019; 120:1184-1249. [DOI: 10.1021/acs.chemrev.9b00220] [Citation(s) in RCA: 286] [Impact Index Per Article: 57.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chenlu Xie
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Zhiqiang Niu
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Dohyung Kim
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
- Chemical Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Mufan Li
- Chemical Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Peidong Yang
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
- Chemical Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Kavli Energy Nanoscience Institute, Berkeley, California 94720, United States
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44
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Shao J, Liu M, Wang Z, Li K, Bao B, Zhao S, Zhou S. Controllable Synthesis of Surface Pt-Rich Bimetallic AuPt Nanocatalysts for Selective Hydrogenation Reactions. ACS OMEGA 2019; 4:15621-15627. [PMID: 31572863 PMCID: PMC6761762 DOI: 10.1021/acsomega.9b02117] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
Bimetallic nanocatalysts, with efficient and controllable catalytic performance, have a promising application in chemical production. In this study, surface Pt-rich bimetallic AuPt nanoparticles with different Pt/Au ratios were prepared and tested in selective hydrogenation reactions of substituted nitroaromatics. Au nanoparticles were first prepared with n-butyllithium as a rapid reducer, which were further used as seeds in the slow growth process of Pt atoms. Because of the employed sequential reduction method and the following atom diffusion, surface Pt-rich bimetallic AuPt nanoparticles were obtained. Compared with the uniform AuPt alloy nanocatalysts synthesized by the co-reduction method with n-butyllithium as the reducer and monometallic Pt nanocatalysts, the obtained surface Pt-rich AuPt bimetallic nanocatalysts presented an enhanced catalytic selectivity or activity. The performance enhancement is assigned to the optimized Au/Pt interaction in the surface Pt-rich bimetallic nanostructures. This work demonstrates that the optimization of the stoichiometry and construction of bimetallic materials is a feasible method to synthesize controllable and efficient nanocatalysts.
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45
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One-Pot Synthesis of Highly Efficient Carbon-Supported Polyhedral Pt3Ni Alloy Nanoparticles for Oxygen Reduction Reaction. Electrocatalysis (N Y) 2019. [DOI: 10.1007/s12678-019-00547-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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46
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Kim C, Dionigi F, Beermann V, Wang X, Möller T, Strasser P. Alloy Nanocatalysts for the Electrochemical Oxygen Reduction (ORR) and the Direct Electrochemical Carbon Dioxide Reduction Reaction (CO 2 RR). ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1805617. [PMID: 30570788 DOI: 10.1002/adma.201805617] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 10/18/2018] [Indexed: 06/09/2023]
Abstract
In the face of the global energy challenge and progressing global climate change, renewable energy systems and components, such as fuel cells and electrolyzers, which close the energetic oxygen and carbon cycles, have become a technology development priority. The electrochemical oxygen reduction reaction (ORR) and the direct electrochemical carbon dioxide reduction reaction (CO2 RR) are important electrocatalytic processes that proceed at gas diffusion electrodes of hydrogen fuel cells and CO2 electrolyzers, respectively. However, their low catalytic activity (voltage efficiency), limited long-term stability, and moderate product selectivity (related to their Faradaic efficiency) have remained challenges. To address these, suitable catalysts are required. This review addresses the current state of research on Pt-based and Cu-based nanoalloy electrocatalysts for ORR and CO2 RR, respectively, and critically compares and contrasts key performance parameters such as activity, selectivity, and durability. In particular, Pt nanoparticles alloyed with transition metals, post-transition metals and lanthanides, are discussed, as well as the material characterization and their performance for the ORR. Then, bimetallic Cu nanoalloy catalysts are reviewed and organized according to their main reaction product generated by the second metal. This review concludes with a perspective on nanoalloy catalysts for the ORR and the CO2 RR, and proposes future research directions.
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Affiliation(s)
- Cheonghee Kim
- Department of Chemistry, Chemical Engineering Division, Technical University Berlin, 10623, Berlin, Germany
| | - Fabio Dionigi
- Department of Chemistry, Chemical Engineering Division, Technical University Berlin, 10623, Berlin, Germany
| | - Vera Beermann
- Department of Chemistry, Chemical Engineering Division, Technical University Berlin, 10623, Berlin, Germany
| | - Xingli Wang
- Department of Chemistry, Chemical Engineering Division, Technical University Berlin, 10623, Berlin, Germany
| | - Tim Möller
- Department of Chemistry, Chemical Engineering Division, Technical University Berlin, 10623, Berlin, Germany
| | - Peter Strasser
- Department of Chemistry, Chemical Engineering Division, Technical University Berlin, 10623, Berlin, Germany
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47
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Arroyo‐Gómez JJ, Barrera D, Castagna RM, Sieben JM, Alvarez AE, Duarte MME, Sapag K. PtPdNi Catalysts Supported on Porous Carbon for Ethanol Electro‐oxidation. ChemCatChem 2019. [DOI: 10.1002/cctc.201900291] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- José J. Arroyo‐Gómez
- Laboratorio de Sólidos Porosos (LabSoP) Instituto de Física Aplicada (INFAP-CONICET)Universidad Nacional de San Luis Av. Ejército de los Andes 950 5700 San Luis Argentina
| | - Deicy Barrera
- Laboratorio de Sólidos Porosos (LabSoP) Instituto de Física Aplicada (INFAP-CONICET)Universidad Nacional de San Luis Av. Ejército de los Andes 950 5700 San Luis Argentina
| | - Rodrigo M. Castagna
- Instituto de Ingeniería Electroquímica y Corrosión (INIEC)Universidad Nacional del Sur Av. Alem 1253 8000 Bahía Blanca Argentina) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) (Argentina
| | - Juan Manuel Sieben
- Instituto de Ingeniería Electroquímica y Corrosión (INIEC)Universidad Nacional del Sur Av. Alem 1253 8000 Bahía Blanca Argentina) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) (Argentina
| | - Andrea E. Alvarez
- Instituto de Ingeniería Electroquímica y Corrosión (INIEC)Universidad Nacional del Sur Av. Alem 1253 8000 Bahía Blanca Argentina) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) (Argentina
| | - Marta M. E Duarte
- Instituto de Ingeniería Electroquímica y Corrosión (INIEC)Universidad Nacional del Sur Av. Alem 1253 8000 Bahía Blanca Argentina) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) (Argentina
| | - Karim Sapag
- Laboratorio de Sólidos Porosos (LabSoP) Instituto de Física Aplicada (INFAP-CONICET)Universidad Nacional de San Luis Av. Ejército de los Andes 950 5700 San Luis Argentina
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48
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Rational Development of Structurally Ordered Platinum Ternary Intermetallic Electrocatalysts for Oxygen Reduction Reaction. Catalysts 2019. [DOI: 10.3390/catal9070569] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Structurally ordered intermetallic structure is an efficient catalyst design strategy to significantly improve the catalytic performance of Pt alloy electrocatalysts for oxygen reduction reaction in fuel cells. However, a high structural ordering degree generally relies on high-temperature annealing, which results in detrimental catalyst particle sintering. Herein, we reveal that the incompatibility between high ordering degree and minimum particle sintering during thermal annealing can be resolved through rational development of structurally ordered Pt ternary alloys. Ordering transformation mediated by high-temperature annealing of three representative Pt ternary alloys (Pt–Fe–Co, Pt–Ni–Co and Pt–Fe–Ni) at a similar Pt composition was systematically studied. It was found that Fe can significantly promote the structural ordering due to a faster atomic diffusion, whereas Co can effectively inhibit the particle sintering. As a result of the synergy between Co and Fe, the ordered PtCoFe catalyst exhibited the highest ordering degree after thermal annealing at 600 °C with the minimum nanoparticle growth, leading to the highest catalytic activity (0.65 A/mgPt at 0.9 V, 4 times that of pure Pt catalyst) and best stability (16% drop after 10,000 potential cycles). This study provides important clues for the rational design of high-performance structurally ordered ternary Pt alloys.
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49
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Effective surface termination with Au on PtCo@Pt core-shell nanoparticle: Microstructural investigations and oxygen reduction reaction properties. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.04.053] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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50
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Qin F, Ma Y, Miao L, Wang Z, Gan L. Influence of Metal-Ligand Coordination on the Elemental Growth and Alloying Composition of Pt-Ni Octahedral Nanoparticles for Oxygen Reduction Electrocatalysis. ACS OMEGA 2019; 4:8305-8311. [PMID: 31459917 PMCID: PMC6648910 DOI: 10.1021/acsomega.8b03366] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Accepted: 02/21/2019] [Indexed: 05/29/2023]
Abstract
Understanding the role of surfactants or ligands on the growth mechanism of metal/alloy nanoparticles (NPs) is important for controlled synthesis of functional metallic NPs with tailored structures and properties. There have been a number of works showing the significant impact of surfactants/ligands on the shape-controlled synthesis of nanocrystals with well-defined surfaces. Beyond the morphological shape control, impact of the surfactants/ligands on the alloying structure of bimetallic nanocrystals, however, still remains largely unaddressed. We reveal here a significant effect of benzoic acid ligand on the elemental growth and alloying phase structure of octahedral Pt-Ni NPs, a class of highly active electrocatalyst for oxygen reduction reaction in fuel cells. Contrary to previous reports showing the critical role of benzoic acid in directing the growth of octahedral Pt-Ni NPs, we found that benzoic acid played a minor role in forming the octahedral shape; instead, it can strongly coordinate with Ni cation and significantly slows down its reduction rate, leading to a phase separation in the Pt-Ni NP products (a mixture of Pt-rich octahedral NPs and nearly pure Ni NPs). Such phase separation further resulted in a lower catalytic activity and stability. These results help us comprehensively understand the effect of metal-ligand coordination chemistry on the elemental growth mechanism and alloying phase structure of bimetallic NPs, complementing previous emphasis on the role of surfactants in purely morphological shape control.
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Affiliation(s)
| | | | | | | | - Lin Gan
- E-mail: . Phone/Fax: +86-(0)755-26036022
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