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The influence of sodium ion as a potential fuel impurity on the direct methanol fuel cells
Jie, Xiao1,2; Shao, Zhi-Gang1; Hou, Junbo3; Sun, Gongquan1; Yi, Baolian1; Shao ZG(邵志刚)
关键词Direct Methanol Fuel Cell (Dmfc) Cationic Impurities In Situ Reference Electrode Impedance
刊名ELECTROCHIMICA ACTA
2010-06-30
DOI10.1016/j.electacta.2010.03.035
55期:16页:4783-4788
收录类别SCI
文章类型Article
部门归属3
项目归属301
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Electrochemistry
研究领域[WOS]Electrochemistry
关键词[WOS]PERFLUOROSULFONATED IONOMER MEMBRANES ; OXYGEN REDUCTION KINETICS ; ELECTROCHEMICAL IMPEDANCE ; PERFLUORINATED IONOMER ; CATALYST LAYER ; TEMPERATURE ; ELECTRODES ; TRANSPORT ; PLATINUM ; CONTAMINATION
英文摘要Na(+) is a likely intrinsic impurity in water and is a sort of common cation impurity in the direct methanol fuel cells (DMFCs). In this paper, the effect of Na(+) on the DMFC electrochemical response is studied by adding Na(+) into the methanol water solution fed in the anode of DMFC. The dynamic variation of cell voltage results shows that the DMFC performance degraded by the presence of Na(+) impurity, and the higher concentration of Na(+) impurity, the higher poisoning rate is observed. In the meantime, an external reference electrode is used to measure the potential and impedance of the cathode and anode. It is found that the dramatic decrease of the cell voltage is mainly ascribed to the increase of the cathode overpotential which is caused by Na(+) exchange with protons in the cathode catalyst layer. The electrochemical impedance measurements suggest that the lack of available protons and low oxygen concentration at the cathode catalytic sites contributed to this degradation. Furthermore, the recovery strategy is introduced and it is found that the poisoned MEA could be partly recovered by immersing in 0.5 M H(2)SO(4) solution for 4 h. (C) 2010 Elsevier Ltd. All rights reserved.
语种英语
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WOS记录号WOS:000278612100017
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/103637
专题中国科学院大连化学物理研究所
通讯作者Shao ZG(邵志刚)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Syst & Engn Lab, Dalian 116023, Laio Ning, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Univ Leoben, Dept Phys Chem, A-8700 Leoben, Austria
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Jie, Xiao,Shao, Zhi-Gang,Hou, Junbo,et al. The influence of sodium ion as a potential fuel impurity on the direct methanol fuel cells[J]. ELECTROCHIMICA ACTA,2010,55(16):4783-4788.
APA Jie, Xiao,Shao, Zhi-Gang,Hou, Junbo,Sun, Gongquan,Yi, Baolian,&邵志刚.(2010).The influence of sodium ion as a potential fuel impurity on the direct methanol fuel cells.ELECTROCHIMICA ACTA,55(16),4783-4788.
MLA Jie, Xiao,et al."The influence of sodium ion as a potential fuel impurity on the direct methanol fuel cells".ELECTROCHIMICA ACTA 55.16(2010):4783-4788.
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