Development of high-performance cathode catalyst of polypyrrole modified carbon supported CoOOH for direct borohydride fuel cell
文献类型：期刊论文
| 作者 | He, Y; Zhu, C; Chen, KJ; Wang, J; Qin, HY; Liu, JB; Yan, S; Yang, K; Li, AG |
| 刊名 | JOURNAL OF POWER SOURCES
 |
| 出版日期 | 2017 |
| 卷号 | 339页码:13-19 |
| 关键词 | Polypyrrole Modified Carbon Supported Cobalt Catalyst X-ray Photoelectron Spectroscopy X-ray Absorption Fine Structure Oxygen Reduction Reaction Direct Borohydride Fuel Cell |
| ISSN号 | 0378-7753 |
| DOI | 10.1016/j.jpowsour.2016.11.021 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Polyfiyrrole 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000390516000002 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/27295]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：上海应用物理研究所
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