DICP OpenIR
Subject Area物理化学
Investigations on degradation of the long-term proton exchange membrane water electrolysis stack
Sun, Shucheng1,2; Shao, Zhigang1; Yu, Hongmei1; Li, Guangfu1; Yi, Baolian1; Shao ZG(邵志刚)
KeywordProton Exchange Membrane Water Electrolysis Stack Degradation Cation Contamination
Source PublicationJOURNAL OF POWER SOURCES
2014-12-01
DOI10.1016/j.jpowsour.2014.05.117
Volume267Pages:515-520
Indexed BySCI
Cooperation Status
SubtypeArticle
DepartmentDNL03
Funding ProjectDNL0301
Contribution Rank待补充
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Funding Organization1,1 ; 1,1 ; 1,1 ; 1,1
WOS SubjectElectrochemistry ; Energy & Fuels
WOS Research AreaElectrochemistry ; Energy & Fuels
WOS KeywordSOLID POLYMER ELECTROLYTE ; FUEL-CELLS ; HYDROGEN-PRODUCTION ; OXYGEN EVOLUTION ; SODIUM-ION ; IMPEDANCE ; ELECTROCATALYSIS ; CONTAMINATION ; PERFORMANCE ; CATALYST
AbstractA 9-cell proton exchange membrane (PEM) water electrolysis stack is developed and tested for 7800 h. The average degradation rate of 35.5 mu V h(-1) per cell is measured. The 4th MEA of the stack is offline investigated and characterized. The electrochemical impedance spectroscopy (EIS) shows that the charge transfer resistance and ionic resistance of the cell both increase. The linear sweep scan (LSV) shows the hydrogen crossover rate of the membrane has slight increase. The electron probe X-ray microanalyze (EPMA) illustrates further that Ca, Cu and Fe elements distribute in the membrane and catalyst layers of the catalyst-coated membranes (CCMs). The cations occupy the ion exchange sites of the Nation polymer electrolyte in the catalyst layers and membrane, which results in the increase in the anode and the cathode overpotentials. The metallic impurities originate mainly from the feed water and the components of the electrolysis unit. Fortunately, the degradation was reversible and can be almost recovered to the initial performance by using 0.5 M H2SO4. This indicates the performance degradation of the stack running 7800 h is mainly caused by a recoverable contamination. (C) 2014 Elsevier B.V. All rights reserved.
Language英语
Funding Organization1,1 ; 1,1 ; 1,1 ; 1,1
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WOS IDWOS:000339601800059
Citation statistics
Cited Times:38[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/119698
Collection中国科学院大连化学物理研究所
Corresponding AuthorShao ZG(邵志刚)
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Syst & Engn Lab, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Sun, Shucheng,Shao, Zhigang,Yu, Hongmei,et al. Investigations on degradation of the long-term proton exchange membrane water electrolysis stack[J]. JOURNAL OF POWER SOURCES,2014,267:515-520.
APA Sun, Shucheng,Shao, Zhigang,Yu, Hongmei,Li, Guangfu,Yi, Baolian,&邵志刚.(2014).Investigations on degradation of the long-term proton exchange membrane water electrolysis stack.JOURNAL OF POWER SOURCES,267,515-520.
MLA Sun, Shucheng,et al."Investigations on degradation of the long-term proton exchange membrane water electrolysis stack".JOURNAL OF POWER SOURCES 267(2014):515-520.
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