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He W, Xiang Y, Xin M, Qiu L, Dong W, Zhao W, Diao Y, Zheng A, Xu G. Investigation of multiple commercial electrocatalysts and electrocatalyst degradation for fuel cells in real vehicles. RSC Adv 2022; 12:32374-32382. [DOI: 10.1039/d2ra05682h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 10/30/2022] [Indexed: 11/13/2022] Open
Abstract
The coalescence of Pt nanoparticles during operation in a real vehicle is considered to be the main reason to weaken the ORR. The trajectories of oriented attachment were disclosed by observing the coalescence events of Pt NPs using in situ TEM.
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Affiliation(s)
- Wenhui He
- SINOPEC Research Institute of Petroleum Processing Co., Ltd., Beijing 100083, China
| | - Yanjuan Xiang
- SINOPEC Research Institute of Petroleum Processing Co., Ltd., Beijing 100083, China
| | - Mudi Xin
- SINOPEC Research Institute of Petroleum Processing Co., Ltd., Beijing 100083, China
| | - Limei Qiu
- SINOPEC Research Institute of Petroleum Processing Co., Ltd., Beijing 100083, China
| | - Wenyan Dong
- SINOPEC Research Institute of Petroleum Processing Co., Ltd., Beijing 100083, China
| | - Wenhui Zhao
- SINOPEC Research Institute of Petroleum Processing Co., Ltd., Beijing 100083, China
| | - Yuxia Diao
- SINOPEC Research Institute of Petroleum Processing Co., Ltd., Beijing 100083, China
| | - Aiguo Zheng
- SINOPEC Research Institute of Petroleum Processing Co., Ltd., Beijing 100083, China
| | - Guangtong Xu
- SINOPEC Research Institute of Petroleum Processing Co., Ltd., Beijing 100083, China
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Deng J, Zhang J, Chen J, Luo Y, Chen Y, Xue Y, Wang G, Wang R. Fabrication of layered porous TiO2/carbon fiber paper decorated by Pt nanoparticles using atomic layer deposition for efficient methanol electro-oxidation. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114468] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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A convenient protocol for the evaluation of commercial Pt/C electrocatalysts toward oxygen reduction reaction. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114172] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Liu H, Qin J, Zhao S, Gao Z, Fu Q, Song Y. Two-dimensional circular platinum nanodendrites toward efficient oxygen reduction reaction and methanol oxidation reaction. Electrochem commun 2019. [DOI: 10.1016/j.elecom.2018.11.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Synthesis and Electrochemical Property of PtPdCu Nanoparticles with Truncated-Octahedral Morphology. Catal Letters 2018. [DOI: 10.1007/s10562-018-2568-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Tian R, Shen S, Zhu F, Luo L, Yan X, Wei G, Zhang J. Icosahedral Pt-Ni Nanocrystalline Electrocatalyst: Growth Mechanism and Oxygen Reduction Activity. CHEMSUSCHEM 2018; 11:1015-1019. [PMID: 29380546 DOI: 10.1002/cssc.201800074] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Indexed: 06/07/2023]
Abstract
Engineering the structure of Pt alloy offers an effective way to the design of high performance electrocatalysts. Herein, we synthesize a sandwich-structured, icosahedral Pt2.1 Ni catalyst through a hot injection method. Its growth involves three steps: 1) burst nucleation of Pt atoms to form a Pt-enriched core, 2) heterogeneous nucleation of Ni atoms onto the Pt core to form a Ni-enriched interlayer, and 3) kinetic controlled growth of a Pt-enriched shell. The Pt-enriched core protects the nanostructure from collapse and mitigates the strain change caused by lattice mismatch, and thus enhances the stability of the structure. The Ni-enriched interlayer induces the electronic modification of the outermost Pt shell, and in turn tunes the activity. The Pt-enriched shell provides more active sites through the exposure of (1 1 1) facets and retards the dissolution of Ni atoms. As a result, this sandwich-structure enables impressive electrocatalytic activity (0.91 mA cm-2 and 0.32 AmgPt-1 @ 0.9 V) and duability.
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Affiliation(s)
- Renxiu Tian
- Institute of Fuel Cells, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, P. R. China
| | - Shuiyun Shen
- Institute of Fuel Cells, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, P. R. China
| | - Fengjuan Zhu
- Institute of Fuel Cells, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, P. R. China
| | - Liuxuan Luo
- Institute of Fuel Cells, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, P. R. China
| | - Xiaohui Yan
- Institute of Fuel Cells, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, P. R. China
| | - Guanghua Wei
- SJTU-Paris Tech Elite Institute of Technology, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai, 200240, P. R. China
| | - Junliang Zhang
- Institute of Fuel Cells, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shanghai, 200240, P. R. China
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Xu H, Zhang K, Yan B, Zhong J, Li S, Du Y. Facile synthesis of Pd-decorated Pt/Ru networks with highly improved activity for methanol electrooxidation in alkaline media. NEW J CHEM 2017. [DOI: 10.1039/c6nj03773a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrocatalytic activity toward methanol oxidation is greatly enhanced after partial replacement of Ru with Pd in Pt/Ru/Pd networks.
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Affiliation(s)
- Hui Xu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Ke Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Bo Yan
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Jiatai Zhong
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Shumin Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
| | - Yukou Du
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou
- China
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