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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)
KeywordDirect Methanol Fuel Cell (Dmfc) Cationic Impurities In Situ Reference Electrode Impedance
Source PublicationELECTROCHIMICA ACTA
2010-06-30
DOI10.1016/j.electacta.2010.03.035
Volume55Issue:16Pages:4783-4788
Indexed BySCI
SubtypeArticle
Department3
Funding Project301
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectElectrochemistry
WOS Research AreaElectrochemistry
WOS KeywordPERFLUOROSULFONATED IONOMER MEMBRANES ; OXYGEN REDUCTION KINETICS ; ELECTROCHEMICAL IMPEDANCE ; PERFLUORINATED IONOMER ; CATALYST LAYER ; TEMPERATURE ; ELECTRODES ; TRANSPORT ; PLATINUM ; CONTAMINATION
AbstractNa(+) 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.
Language英语
URL查看原文
WOS IDWOS:000278612100017
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/103637
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, 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
Recommended Citation
GB/T 7714
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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