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Development of high-performance cathode catalyst of polypyrrole modified carbon supported CoOOH for direct borohydride fuel cell
He, Y; Zhu, C; Chen, KJ; Wang, J; Qin, HY; Liu, JB; Yan, S; Yang, K; Li, AG
2017
Source PublicationJOURNAL OF POWER SOURCES
ISSN0378-7753
Volume339Pages:13-19
Subtype期刊论文
AbstractPolyfiyrrole modified carbon supported CoOOH electrocatalyst (CoOOH-PPy-C) is prepared by impregnation-chemical method, and the catalytic properties for the oxygen reduction reaction (ORR) in alkaline media are investigated. The X-ray diffraction and transmission electron microscopy results confirm the presence of the expected CoOOH. The electrochemical tests show that the CoOOH-PPy-C catalyst exhibits good electrocatalytic activity towards ORR. The direct borohydride fuel cell using CoOOH-PPy-C as the cathode catalyst demonstrates a good stability performance. There is only 4% decrease of the cell voltage after 80-h operation. The ORR occurs an average 4-electron transfer pathway on the CoOOH-PPy-C catalyst. The good catalytic activity towards ORR benefits from the Co-N bond, which is identified by X-ray photoelectron spectroscopy test. X-ray absorption fine structure experiments further show that two nearest O atoms are substituted by two N atoms bonding to Co ion at a distance of 1.64 angstrom. The CoOOH-PPy-C exhibits better electrochemical properties than the Co(OH)(2) counterpart even though the valence state of Co ion is +3 in CoOOH-PPy-C. Those results indicate that the bonding of Co ion with N atoms should be a key issue regardless the valence of Co ion. (C) 2016 Elsevier B.V. All rights reserved.
KeywordPolypyrrole Modified Carbon Supported Cobalt Catalyst X-ray Photoelectron Spectroscopy X-ray Absorption Fine Structure Oxygen Reduction Reaction Direct Borohydride Fuel Cell
DOI10.1016/j.jpowsour.2016.11.021
Indexed BySCI
Language英语
WOS IDWOS:000390516000002
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/27295
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
He, Y,Zhu, C,Chen, KJ,et al. Development of high-performance cathode catalyst of polypyrrole modified carbon supported CoOOH for direct borohydride fuel cell[J]. JOURNAL OF POWER SOURCES,2017,339:13-19.
APA He, Y.,Zhu, C.,Chen, KJ.,Wang, J.,Qin, HY.,...&Li, AG.(2017).Development of high-performance cathode catalyst of polypyrrole modified carbon supported CoOOH for direct borohydride fuel cell.JOURNAL OF POWER SOURCES,339,13-19.
MLA He, Y,et al."Development of high-performance cathode catalyst of polypyrrole modified carbon supported CoOOH for direct borohydride fuel cell".JOURNAL OF POWER SOURCES 339(2017):13-19.
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