Effect of fabrication methods of bifunctional catalyst layers on unitized regenerative fuel cell performance
文献类型：期刊论文
| 作者 | Chen, Guobao1,2; Zhang, Huamin1; Ma, Haipeng1; Zhong, Hexiang1 |
| 刊名 | electrochimica acta
 |
| 出版日期 | 2009-09-30 |
| 卷号 | 54期号:23页码:5454-5462 |
| 关键词 | Bifunctional catalyst layer Unitized regenerative fuel cell Membrane electrode assembly Electrochemical impedance spectra Spraying technique |
| 通讯作者 | 张华民 |
| 产权排序 | 1;1 |
| 英文摘要 | in order to understand the origins of performance variations in unitized regenerative fuel cells (urfcs), bifunctional catalyst layers (bcls) fabricated with two different methods, i.e., ink deposition on membrane or gdl. were designed in this paper. the performances of the two different methods were evaluated, and their reaction dynamics were measured by electrochemical impedance spectra. the different bcls, caused by the different preparation processes, were found to influence the fuel cell performance. the cell potentials of the urfcs using platinum sprayed onto the gas diffusion layer (gdl) are above 0.100 v higher than those with platinum sprayed onto the membrane at 800 ma cm(-2) in fuel cell (fc) mode. the mass transport resistances of the urfcs at different operation modes were also compared. it was proved that the platinum layer formed by applying platinum onto the gdl could prevent the cell from water flooding in fc mode. however, it was found that the cell performance changed slightly in water electrolysis mode with different bcls. the electron conduction path was also found to be hindered by an iro(2) agglomerate, which led to a decrease in cell performance. the highest and lowest round-trip efficiencies of the urfc with different bcls were 42.1% and 22.3%, respectively, at 800 ma cm(-2). (c) 2009 elsevier ltd. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | electrochemistry |
| 研究领域[WOS] | electrochemistry |
| 关键词[WOS] | electrochemical impedance ; electrocatalysts ; electrode ; reduction |
| 收录类别 | SCI |
| 原文出处 | false |
| 语种 | 英语 |
| WOS记录号 | WOS:000268518500021 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/102647]  |
| 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, Key Mat Lab PEMFCs, 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 | Chen, Guobao,Zhang, Huamin,Ma, Haipeng,et al. Effect of fabrication methods of bifunctional catalyst layers on unitized regenerative fuel cell performance[J]. electrochimica acta,2009,54(23):5454-5462. |
| APA | Chen, Guobao,Zhang, Huamin,Ma, Haipeng,&Zhong, Hexiang.(2009).Effect of fabrication methods of bifunctional catalyst layers on unitized regenerative fuel cell performance.electrochimica acta,54(23),5454-5462. |
| MLA | Chen, Guobao,et al."Effect of fabrication methods of bifunctional catalyst layers on unitized regenerative fuel cell performance".electrochimica acta 54.23(2009):5454-5462. |
入库方式： OAI收割
来源：大连化学物理研究所
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