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Potential dependence of sulfur dioxide poisoning and oxidation at the cathode of proton exchange membrane fuel cells
Fu, Jie1,2; Hou, Ming1; Du, Chao1,2; Shao, Zhigang1; Yi, Baolian1
关键词Proton Exchange Membrane Fuel Cell Sulfur Dioxide Potential Dependence Poisoning Oxidation
刊名JOURNAL OF POWER SOURCES
2009-02-01
DOI10.1016/j.jpowsour.2008.10.103
187期:1页:32-38
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Electrochemistry ; Energy & Fuels
研究领域[WOS]Electrochemistry ; Energy & Fuels
关键词[WOS]PLATINUM-ELECTRODE ; PEMFC PERFORMANCE ; SO2 ; ADSORPTION ; IMPACT
英文摘要Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were employed to investigate changes in the cathode after the introduction Of SO(2). The decay in performance of the proton exchange membrane fuel cell (PEMFC) was ascribed to the increasing of the charge transfer resistance (R(ct)) caused by the loss of the electrochemical surface area (ECA). The results show that the oxidation and adsorption behaviors of SO(2) depended closely on the potential. Adsorbed sulfur began to be oxidized over 0.9V and could be oxidized completely with CV maximum potentials LIP to 1.05 V or higher. At about 0.65 V, the adsorbed SO(2) was probably in a molecular state, which could be reduced in the range of 0.65-0.05 V. Some SO(2) molecules occupied initially two Pt sites through S and O. One of the two sites could be released after the reduction. The increasing of ECA due to reduction Could lessen the impact of SO(2) on the PEMFC performance at voltages below 0.65 V. (c) 2008 Elsevier B.V. All rights reserved
语种英语
WOS记录号WOS:000263306300005
引用统计
被引频次:48[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141407
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Syst & Engn Res Grp, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
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Fu, Jie,Hou, Ming,Du, Chao,et al. Potential dependence of sulfur dioxide poisoning and oxidation at the cathode of proton exchange membrane fuel cells[J]. JOURNAL OF POWER SOURCES,2009,187(1):32-38.
APA Fu, Jie,Hou, Ming,Du, Chao,Shao, Zhigang,&Yi, Baolian.(2009).Potential dependence of sulfur dioxide poisoning and oxidation at the cathode of proton exchange membrane fuel cells.JOURNAL OF POWER SOURCES,187(1),32-38.
MLA Fu, Jie,et al."Potential dependence of sulfur dioxide poisoning and oxidation at the cathode of proton exchange membrane fuel cells".JOURNAL OF POWER SOURCES 187.1(2009):32-38.
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