The stability of Pt/C catalyst in H3PO4/PBI PEMFC during high temperature life test
文献类型：期刊论文
| 作者 | Zhai, Yunfeng; Zhang, Huamin; Xing, Danmin; Shao, Zhi-Gang |
| 刊名 | journal of power sources
 |
| 出版日期 | 2007-01-10 |
| 卷号 | 164期号:1页码:126-133 |
| 关键词 | high temperature PEMFC PBI/H3PO4 platinum electrocatalyst electrochemical surface area coalescence mechanism |
| 产权排序 | 1;1 |
| 通讯作者 | 张华民 |
| 英文摘要 | the stability of pt/c electrocatalyst was investigated by a series of intermittent life tests (100, 300 and 520 h) of single proton exchange membrane fuel cell (pemfc) with phosphoric acid doped pbi (h3po4/pbi) membranes at high temperature. the electrochemical surface area (esa) loss of cathode electrocatalyst was investigated by electrochemical techniques (cyclic voltammetry, cv). during the first about 300 h, the esa decreased fast from 17.2 to 7.8 m(2) g(pt)(-1) (about 55%), and had only a small decrease (about 5%) in the following 210 h. the tested cathode catalysts were analyzed by transmission electron microscopy (tem) and x-ray diffraction (xrd) to determine the degree of electrocatalyst sintering. the results showed that the pt particle size in the cathode increased from 4.0 to 8.3 nm before and after 300 it but it had no obvious growth in the further life tests. the tested mea was also analyzed by energy dispersive x-ray (edx) to investigate the platinum deposition in h3po4/pbi membrane. platinum did not be found in the tested h3po4/pbi membrane. above results indicated that the agglomeration of pt particle should be responsible for the esa loss of pt/c electrocatalyst. the further analyses on tem data suggested that agglomeration of platinum particles occurred via coalescence mechanism on carbon at the nanometer scale. (c) 2006 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | electrochemistry ; energy & fuels |
| 研究领域[WOS] | electrochemistry ; energy & fuels |
| 关键词[WOS] | proton-exchange membrane ; fuel-cells ; polymer electrolyte ; phosphoric-acid ; platinum ; polybenzimidazole ; deposition ; carbon |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000243675300019 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/98985]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab PEMFC Key Mat & Technol, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhai, Yunfeng,Zhang, Huamin,Xing, Danmin,et al. The stability of Pt/C catalyst in H3PO4/PBI PEMFC during high temperature life test[J]. journal of power sources,2007,164(1):126-133. |
| APA | Zhai, Yunfeng,Zhang, Huamin,Xing, Danmin,&Shao, Zhi-Gang.(2007).The stability of Pt/C catalyst in H3PO4/PBI PEMFC during high temperature life test.journal of power sources,164(1),126-133. |
| MLA | Zhai, Yunfeng,et al."The stability of Pt/C catalyst in H3PO4/PBI PEMFC during high temperature life test".journal of power sources 164.1(2007):126-133. |
入库方式： OAI收割
来源：大连化学物理研究所
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