DICP OpenIR
On-line alleviation of poisoning in direct methanol fuel cells with pulse potential strategy
Sun, Xuejing1,2; Yang, Linlin1; Xia, Zhangxun1; Sun, Hai1; Sun, Gongquan1
Corresponding AuthorSun, Hai(sunhai@dicp.ac.cn) ; Sun, Gongquan(gqsun@dicp.ac.cn)
KeywordDirect methanol fuel cells Industrial grade methanol Impurities Performance recovery On-line pulse potential method
Source PublicationJOURNAL OF POWER SOURCES
2019-04-15
ISSN0378-7753
DOI10.1016/j.jpowsour.2019.02.025
Volume419Pages:155-161
Funding ProjectNational Natural Science Foundation of China[21576259] ; National Natural Science Foundation of China[21406222] ; National Natural Science Foundation of China[21406216] ; National Natural Science Foundation of China[21706251]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS KeywordELECTROCHEMICAL IMPEDANCE SPECTROSCOPY ; OXYGEN-REDUCTION ; OXIDATION ; PLATINUM ; PERFORMANCE ; ANODE ; ELECTROOXIDATION ; NANOPARTICLES ; FTIR ; ELECTROCATALYSIS
AbstractCatalyst poisoning from the impurities in the industrial grade methanol is a major challenge for the large-scale application of direct methanol fuel cells in low cost. In this work, we systematically investigate the impurities influencing on cell performance, and confirm that the adsorption of carbonyl containing intermediate species derived from the partial electro-oxidation of the impurities is a crucial factor leading to performance degradation. Hence, an on-line alleviation strategy by intermittently applying pulse potential (reduction potential on the anode or oxidation potential on the cathode) is proposed. The applied potential will bring a reductive condition on the anode, which releases the active sites via the reduction of carbonyl containing species adsorbed on platinum-ruthenium electro-catalysts. Based on this strategy, the adsorption of carbonyl containing intermediate species are effectively suppressed, and the decay rate declines by nearly two orders of magnitude than that of a single cell under traditional operation, which paves a way for the practical application of direct methanol fuel cells with industrial grade methanol feed.
Language英语
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS IDWOS:000463305900020
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/165669
Collection中国科学院大连化学物理研究所
Corresponding AuthorSun, Hai; Sun, Gongquan
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Fuel Cells & Battery, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Sun, Xuejing,Yang, Linlin,Xia, Zhangxun,et al. On-line alleviation of poisoning in direct methanol fuel cells with pulse potential strategy[J]. JOURNAL OF POWER SOURCES,2019,419:155-161.
APA Sun, Xuejing,Yang, Linlin,Xia, Zhangxun,Sun, Hai,&Sun, Gongquan.(2019).On-line alleviation of poisoning in direct methanol fuel cells with pulse potential strategy.JOURNAL OF POWER SOURCES,419,155-161.
MLA Sun, Xuejing,et al."On-line alleviation of poisoning in direct methanol fuel cells with pulse potential strategy".JOURNAL OF POWER SOURCES 419(2019):155-161.
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