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Zhang L, Liu T, Liu X, Li S, Zhang X, Luo Q, Ding T, Yao T, Zhang W. Highly dispersed ultrafine PtCo alloy nanoparticles on unique composite carbon supports for proton exchange membrane fuel cells. NANOSCALE 2024; 16:2868-2876. [PMID: 38235504 DOI: 10.1039/d3nr05403a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
The design of highly efficient and robust platinum-based electrocatalysts is pivotal for proton exchange membrane fuel cells (PEMFC). One of the long-standing issues for PEMFC is the rapid deactivation of the catalyst under working conditions. Here, we report a simple synthesis strategy for ultrafine PtCo alloy nanoparticles loaded on a unique carbon support derived from a zeolitic imidazolate framework-67 (ZIF-67) and Ketjen Black (KB) composite, exhibiting a remarkable catalytic performance toward the oxygen reduction reaction (ORR) and PEMFC. Benefitting from the N-doping and wide pore size distribution of the composite carbon supports, the growth of PtCo nanoparticles can be evenly restricted, leading to a uniform distribution. The Pt-integrated catalyst delivers an outstanding electrochemical performance with a mass activity that is 8.6 times higher than that of the commercial Pt/C catalyst. Impressively, the accelerated durability test (ADT) demonstrates that the hybrid carbon support can significantly enhance the durability. Theoretical simulations highlight the synergistic contribution between the supports and the PtCo nanoparticles. Moreover, hydrogen-oxygen fuel cells assembled with the catalyst exhibited a high power density of 1.83 W cm-2 at 4 A cm-2. These results provide a new opportunity to design advanced catalysts for PEMFC.
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Affiliation(s)
- Lingling Zhang
- National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230029, P. R. China.
| | - Tong Liu
- National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230029, P. R. China.
| | - Xiaokang Liu
- National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230029, P. R. China.
| | - Sicheng Li
- National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230029, P. R. China.
| | - Xue Zhang
- National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230029, P. R. China.
| | - Qiquan Luo
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
| | - Tao Ding
- National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230029, P. R. China.
- Key Laboratory of Precision and Intelligent Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Tao Yao
- National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230029, P. R. China.
- Key Laboratory of Precision and Intelligent Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Wei Zhang
- National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, 230029, P. R. China.
- Key Laboratory of Precision and Intelligent Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, P. R. China
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Chen W, Zhu X, Wei W, Chen H, Dong T, Wang R, Liu M, Ken Ostrikov K, Peng P, Zang SQ. Neighboring Platinum Atomic Sites Activate Platinum-Cobalt Nanoclusters as High-Performance ORR/OER/HER Electrocatalysts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2304294. [PMID: 37490529 DOI: 10.1002/smll.202304294] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 07/12/2023] [Indexed: 07/27/2023]
Abstract
The rational design of efficient and multifunctional electrocatalysts for energy conversion devices is one of the major challenges for clean and renewable energy transition. Herein, the local electronic structure of cobalt-platinum nanoclusters is regulated by adjacent platinum atomic site encapsulated in N-doped hollow carbon nanotubes (PtSA -PtCo NCs/N-CNTs) by pyrolysis of melamine-orientation-induced zeolite imidazole metal-organic frameworks (ZIF-67) with thimbleful platinum doping. The introduction of melamine can reactivate adjacent carbon atoms and initiate the oriented growth of nitrogen-doped carbon nanotubes. The systematic analysis suggests the significant role of thimbleful neighboring low-coordinated Pt─N2 in altering the localized electronic structure of PtCo nanoclusters. The optimized PtSA -PtCo NCs/N-CNTs-900 exhibit excellent hydrogen evolution reaction (HER)/oxygen evolution reaction (OER)/oxygen reduction reaction (ORR)/ catalytic performance reaching the current density of 10 mA cm-2 in 1 m KOH under the low 47 (HER) and 252 mV (OER) overpotentials, and a high half-wave potential of 0.86 and 0.89 V (ORR) in 0.1 m KOH and 0.1 m HClO4 , respectively. Remarkably, the PtSA -PtCo NC/N-CNT-900 also presents outstanding catalytic performances toward water splitting and rechargeable Zn-air batteries. The theoretical calculations reveal that optimal regulation of the electronic structure of PtCo nanoclusters by thimbleful neighboring Pt atomic reduces the reaction energy barrier in electrochemical process, facilitating the ORR/OER/HER performance.
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Affiliation(s)
- Wenxia Chen
- School of Chemistry and Chemical Engineering, Henan D&A Engineering Center of Advanced Battery Materials, Shangqiu Normal University, Shangqiu, Henan, 476000, China
| | - Xingwang Zhu
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu, 225009, China
| | - Wei Wei
- School of Chemistry and Chemical Engineering, Henan D&A Engineering Center of Advanced Battery Materials, Shangqiu Normal University, Shangqiu, Henan, 476000, China
| | - Haoran Chen
- School of Chemistry and Chemical Engineering, Henan D&A Engineering Center of Advanced Battery Materials, Shangqiu Normal University, Shangqiu, Henan, 476000, China
| | - Tianhao Dong
- School of Chemistry and Chemical Engineering, Henan D&A Engineering Center of Advanced Battery Materials, Shangqiu Normal University, Shangqiu, Henan, 476000, China
| | - Rui Wang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Meng Liu
- School of Chemistry and Chemical Engineering, Henan D&A Engineering Center of Advanced Battery Materials, Shangqiu Normal University, Shangqiu, Henan, 476000, China
| | - Kostya Ken Ostrikov
- School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, QLD, 4000, Australia
| | - Peng Peng
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Shuang-Quan Zang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China
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Shen L, Wang Z, Gong Q, Zhang Y, Wang J. Photocatalytic Synthesis of Ultrafine Pt Electrocatalysts with High Stability Using TiO 2 -Decorated N-Doped Carbon as Composite Support. CHEMSUSCHEM 2023; 16:e202300393. [PMID: 37248649 DOI: 10.1002/cssc.202300393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/25/2023] [Accepted: 05/28/2023] [Indexed: 05/31/2023]
Abstract
Commercial Pt/C (Com. Pt/C) electrocatalysts are considered optimal for oxygen reduction and hydrogen evolution reactions (ORR and HER). However, their high Pt content and poor stability restrict their large-scale application. In this study, photocatalytic synthesis was used to reduce ultrafine Pt nanoparticles in-situ on a composite support of TiO2 -decorated nitrogen-doped carbon (TiO2 -NC). The nitrogen-doped carbon had a large surface area and electronic effects that ensured the uniform dispersion of TiO2 nanoparticles to form a highly photoactive and stable support. TiO2 -NC served as a composite support that enhanced the dispersibility and stability of ultrafine Pt electrocatalyst, owing to the presence of N sites and the strong metal-support interaction. Relative to Com. Pt/C, the as-obtained Pt/TiO2 -NC had positive shifts of 44 and 10 mV in the ORR half-wave potential and HER overpotential at -10 mA cm-2 , respectively. After an accelerated durability test, Pt/TiO2 -NC had lower losses in electrochemical specific area (0.7 %) and electrocatalytic activity (0 mV shift) than Com. Pt/C (25.6 %, 22 mV shift). These results indicate that the developed strategy enabled the facile synthesis and stabilization of ultrafine Pt nanoparticles, which improved the utilization efficiency and long-term stability of Pt-based electrocatalysts.
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Affiliation(s)
- Le Shen
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Zemei Wang
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Qi Gong
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Yanrong Zhang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Jingyu Wang
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
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Sun S, Bao D, Zhou Y, Cheng C, Zhang S, Zhao M, Guo J. Sodium alginate/chitosan-coated TiO 2NPs hybrid fiber with photocatalytic self-cleaning property, UV resistance and enhanced tensile strength. Int J Biol Macromol 2023:124966. [PMID: 37244334 DOI: 10.1016/j.ijbiomac.2023.124966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 05/12/2023] [Accepted: 05/17/2023] [Indexed: 05/29/2023]
Abstract
SA/CS-coated TiO2NPs hybrid fibers with photocatalytic self-cleaning properties, UV resistance and enhanced tensile strength were successfully prepared by adding CS-coated TiO2NPs to SA matrix. The FTIR and TEM results demonstrate the successful preparation of CS-coated TiO2NPs core-shell structured composite particles. SEM and Tyndall effect results showed that the core-shell particles were uniformly dispersed in the SA matrix. When the content of Core-shell particles increased from 0.1 to 0.3 wt%, the tensile strength of SA/CS-coated TiO2NPs hybrid fibers increased from 26.89 to 64.45 % compared with SA/TiO2NPs hybrid fibers. The SA/CS-coated TiO2NPs hybrid fiber (0.3 wt%) exhibits excellent photocatalytic degradation performance, achieving a 90 % degradation rate for the RhB solution. And the fibers also exhibit outstanding photocatalytic degradation performance towards various dyes and stains commonly encountered in daily life, including methyl orange, malachite green, Congo red, coffee and mulberry juice. The UV transmittance of the SA/CS-coated TiO2NPs hybrid fibers decreased significantly from 90 % to 75 % with the increase in core-shell particle addition, and correspondingly, the UV absorption capacity increased. The SA/CS-coated TiO2NPs hybrid fibers prepared lay the groundwork for potential applications in various fields, including textiles, automotive engineering, electronics and medicine.
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Affiliation(s)
- Shengnan Sun
- School of Textile and Materials Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Ganjingzi, Dalian 116034, Liaoning, PR China
| | - Da Bao
- School of Textile and Materials Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Ganjingzi, Dalian 116034, Liaoning, PR China
| | - Yongchun Zhou
- School of Textile and Materials Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Ganjingzi, Dalian 116034, Liaoning, PR China
| | - Chen Cheng
- School of Textile and Materials Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Ganjingzi, Dalian 116034, Liaoning, PR China
| | - Sen Zhang
- School of Textile and Materials Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Ganjingzi, Dalian 116034, Liaoning, PR China; State Key Laboratory of Bio-Fibers and Eco-textiles, Qingdao University, Qingdao 266071, PR China.
| | - Miao Zhao
- School of Textile and Materials Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Ganjingzi, Dalian 116034, Liaoning, PR China
| | - Jing Guo
- School of Textile and Materials Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Ganjingzi, Dalian 116034, Liaoning, PR China.
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Chu Y, Peng R, Chen Z, Li L, Zhao F, Zhu Y, Tong S, Zheng H. Modulating Dominant Facets of Pt through Multistep Selective Anchored on WC for Enhanced Hydrogen Evolution Catalysis. ACS APPLIED MATERIALS & INTERFACES 2023; 15:9263-9272. [PMID: 36780581 DOI: 10.1021/acsami.2c19879] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Facilitating the exposure of the active crystal facets on the surfaces of composite catalysts is a representative route to promote catalytic activity. Based on a tailored galvanic replacement reaction, herein, a self-assembly route is reported to prepare Pt-WC/CNT with Pt (200) preferential orientation and well-dispersed structure, which are capable of substantially boosting electrocatalysis in hydrogen evolution reaction (HER). Formation mechanism reveals that the (200)-dominated Pt-based catalysts form in galvanic replacement reaction through selective anchored on WC, and the multistep galvanic replacement process plays a critical role to realize the Pt (200)-dominated growth in higher Pt loading catalyst. These unique structural features endow the Pt-WC/CNT with a high turnover frequency of 94.18 H2·s-1 at 100 mV overpotential, 7-fold higher than that of commercial Pt/C (13.55 H2·s-1), ranking it among the most active catalysts. In addition, this method, which combines with gas-solid reaction and galvanic replacement reaction, paves the way to scalable synthesis as Pt facets-controllable composite catalysts to challenge commercial Pt/C.
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Affiliation(s)
- Youqun Chu
- International Sci. & Tech. Cooperation Base of Energy Materials and Application, Petroleum and Chemical Industry Key Laboratory of Organic Electrochemical Synthesis, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou City, Zhejiang 310014, China
| | - Ronggui Peng
- International Sci. & Tech. Cooperation Base of Energy Materials and Application, Petroleum and Chemical Industry Key Laboratory of Organic Electrochemical Synthesis, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou City, Zhejiang 310014, China
| | - Zhaoyang Chen
- International Sci. & Tech. Cooperation Base of Energy Materials and Application, Petroleum and Chemical Industry Key Laboratory of Organic Electrochemical Synthesis, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou City, Zhejiang 310014, China
| | - Lingtong Li
- International Sci. & Tech. Cooperation Base of Energy Materials and Application, Petroleum and Chemical Industry Key Laboratory of Organic Electrochemical Synthesis, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou City, Zhejiang 310014, China
| | - Fengming Zhao
- International Sci. & Tech. Cooperation Base of Energy Materials and Application, Petroleum and Chemical Industry Key Laboratory of Organic Electrochemical Synthesis, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou City, Zhejiang 310014, China
| | - Yinghong Zhu
- International Sci. & Tech. Cooperation Base of Energy Materials and Application, Petroleum and Chemical Industry Key Laboratory of Organic Electrochemical Synthesis, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou City, Zhejiang 310014, China
| | - Shaoping Tong
- International Sci. & Tech. Cooperation Base of Energy Materials and Application, Petroleum and Chemical Industry Key Laboratory of Organic Electrochemical Synthesis, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou City, Zhejiang 310014, China
| | - Huajun Zheng
- International Sci. & Tech. Cooperation Base of Energy Materials and Application, Petroleum and Chemical Industry Key Laboratory of Organic Electrochemical Synthesis, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou City, Zhejiang 310014, China
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Advances in Low Pt Loading Membrane Electrode Assembly for Proton Exchange Membrane Fuel Cells. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020773. [PMID: 36677836 PMCID: PMC9866934 DOI: 10.3390/molecules28020773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/03/2023] [Accepted: 01/06/2023] [Indexed: 01/15/2023]
Abstract
Hydrogen has the potential to be one of the solutions that can address environmental pollution and greenhouse emissions from traditional fossil fuels. However, high costs hinder its large-scale commercialization, particularly for enabling devices such as proton exchange membrane fuel cells (PEMFCs). The precious metal Pt is indispensable in boosting the oxygen reduction reaction (ORR) in cathode electrocatalysts from the most crucial component, i.e., the membrane electrode assembly (MEA). MEAs account for a considerable amount of the entire cost of PEMFCs. To address these bottlenecks, researchers either increase Pt utilization efficiency or produce MEAs with enhanced performance but less Pt. Only a few reviews that explain the approaches are available. This review summarizes advances in designing nanocatalysts and optimizing the catalyst layer structure to achieve low-Pt loading MEAs. Different strategies and their corresponding effectiveness, e.g., performance in half-cells or MEA, are summarized and compared. Finally, future directions are discussed and proposed, aiming at affordable, highly active, and durable PEMFCs.
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