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On-line alleviation of poisoning in direct methanol fuel cells with pulse potential strategy

文献类型：期刊论文

作者Sun, Hai2; Sun, Xuejing1,2; Yang, Linlin2; Xia, Zhangxun2; Sun, Gongquan2
刊名JOURNAL OF POWER SOURCES
出版日期2019-04-15
卷号419页码:155-161
ISSN号0378-7753
关键词Direct methanol fuel cells Industrial grade methanol Impurities Performance recovery On-line pulse potential method
DOI10.1016/j.jpowsour.2019.02.025
通讯作者Sun, Hai(sunhai@dicp.ac.cn) ; Sun, Gongquan(gqsun@dicp.ac.cn)
英文摘要Catalyst 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.
WOS关键词ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY ; OXYGEN-REDUCTION ; OXIDATION ; PLATINUM ; PERFORMANCE ; ANODE ; ELECTROOXIDATION ; NANOPARTICLES ; FTIR ; ELECTROCATALYSIS
资助项目National 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]
WOS研究方向Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
语种英语
出版者ELSEVIER SCIENCE BV
WOS记录号WOS:000463305900020
资助机构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 ; National Natural Science Foundation of China
源URL[http://cas-ir.dicp.ac.cn/handle/321008/165668]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Sun, Hai; Sun, Gongquan
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Fuel Cells & Battery, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Hai,Sun, Xuejing,Yang, Linlin,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, Hai,Sun, Xuejing,Yang, Linlin,Xia, Zhangxun,&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, Hai,et al."On-line alleviation of poisoning in direct methanol fuel cells with pulse potential strategy".JOURNAL OF POWER SOURCES 419(2019):155-161.

入库方式： OAI收割

来源：大连化学物理研究所

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