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Tian H, Yu X, Huang W, Chang Z, Pei F, Zhou J, Dai N, Meng G, Chen C, Cui X, Shi J. WO 3 -Assisted Synergetic Effect Catalyzes Efficient and CO-Tolerant Hydrogen Oxidation for PEMFCs. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303061. [PMID: 37340882 DOI: 10.1002/smll.202303061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/05/2023] [Indexed: 06/22/2023]
Abstract
Developing anode catalysts with substantially enhanced activity for hydrogen oxidation reaction (HOR) and CO tolerance performance is of great importance for the commercial applications of proton exchange membrane fuel cells (PEMFCs). Herein, an excellent CO-tolerant catalyst (Pd-WO3 /C) has been fabricated by loading Pd nanoparticles on WO3 via an immersion-reduction route. A remarkably high power density of 1.33 W cm-2 at 80 °C is obtained by using the optimized 3Pd-WO3 /C as the anode catalyst of PEMFCs, and the moderately reduced power density (73% remained) in CO/H2 mixed gas can quickly recover after removal of CO-contamination from hydrogen fuel, which is not possible by using Pt/C or Pd/C as anode catalyst. The prominent HOR activity of 3Pd-WO3 /C is attributed to the optimized interfacial electron interaction, in which the activated H* adsorbed on Pd species can be effectively transferred to WO3 species through hydrogen spillover effect and then oxidized through the H species insert/output effect during the formation of Hx WO3 in acid electrolyte. More importantly, a novel synergetic catalytic mechanism about excellent CO tolerance is proposed, in which Pd and WO3 respectively absorbs/activates CO and H2 O, thus achieving the CO electrooxidation and re-exposure of Pd active sites for CO-tolerant HOR.
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Affiliation(s)
- Han Tian
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Xu Yu
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Weimin Huang
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Ziwei Chang
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- School of Physical Science and Technology, Shanghai Tech University, Shanghai, 201210, China
| | - Fenglai Pei
- Shanghai Motor Vehicle Inspection Certification & Tech Innovation Center Co., Ltd., Shanghai, 201805, China
| | | | - Ningning Dai
- Shanghai Motor Vehicle Inspection Certification & Tech Innovation Center Co., Ltd., Shanghai, 201805, China
| | - Ge Meng
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chang Chen
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiangzhi Cui
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Jianlin Shi
- State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
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Kwag J, Kim S, Kang S, Park J. Multiple‐length scale investigation of Pt/C degradation by identical‐location transmission electron microscopy. B KOREAN CHEM SOC 2023. [DOI: 10.1002/bkcs.12690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Affiliation(s)
- Jimin Kwag
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul Republic of Korea
| | - Sungin Kim
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul Republic of Korea
| | - Sungsu Kang
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul Republic of Korea
| | - Jungwon Park
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul Republic of Korea
- Institute of Engineering Research, College of Engineering Seoul National University Seoul Republic of Korea
- Advanced Institutes of Convergence Technology Seoul National University Gyeonggi‐do Republic of Korea
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Liu F, Gao Z, Su J, Guo L. An Experimental Investigation of the Effect of Platinum on the Corrosion of Cathode Carbon Support in a PEMFC. CHEMSUSCHEM 2022; 15:e202102726. [PMID: 35315245 DOI: 10.1002/cssc.202102726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 03/20/2022] [Indexed: 06/14/2023]
Abstract
The possible role of platinum in the carbon corrosion at cell voltage higher than 1.0 V is controversial yet. To gain more insights into this issue, a square-wave potential cycles between 1.0 to 1.5 V was applied to fuel cells comprising cathodes with and without Pt. Using online non-dispersive infrared spectroscopy, we showed that Pt catalyzed the gasification of carbon in the early stage, while upon prolonged exposure to potential cycling (≥3 h), platinum started to hinder the CO2 production. Based on cyclic voltammetry tests and Raman spectroscopy, the inhibiting effect of platinum on the corrosion was suggested to originate from modifications on carbon surface, where the formation of electroactive sites was limited. Electrode and non-electrode ohmic resistances were distinguished further through electrochemical impedance spectroscopy measurement and the changes in electrode microstructure and surface composition were examined by scanning electron microscope image and energy dispersion X-Ray spectroscopy. The results indicated that Pt reduced the damage of electrode structures after potential cycles.
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Affiliation(s)
- Fengfeng Liu
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R China
| | - Ziliang Gao
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R China
| | - Jinzhan Su
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R China
| | - Liejin Guo
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R China
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Kwon J, Choi P, Jo S, Oh H, Cho KY, Lee YK, Kim S, Eom K. Identification of electrode degradation by carbon corrosion in polymer electrolyte membrane fuel cells using the distribution of relaxation time analysis. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140219] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hu Z, Xu L, Gan Q, Du X, Dai W, Wang Q, Zheng W, Ding Y, Li J, Ouyang M. Carbon corrosion induced fuel cell accelerated degradation warning: From mechanism to diagnosis. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138627] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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