Investigations on degradation of the long-term proton exchange membrane water electrolysis stack
文献类型：期刊论文
| 作者 | Sun, Shucheng1,2; Shao, Zhigang1; Yu, Hongmei1; Li, Guangfu1; Yi, Baolian1 |
| 刊名 | journal of power sources
 |
| 出版日期 | 2014-12-01 |
| 卷号 | 267页码:515-520 |
| 关键词 | Proton exchange membrane Water electrolysis stack Degradation Cation contamination |
| 通讯作者 | 邵志刚 |
| 产权排序 | 待补充 |
| 合作状况 | 英 |
| 英文摘要 | a 9-cell proton exchange membrane (pem) water electrolysis stack is developed and tested for 7800 h. the average degradation rate of 35.5 mu v h(-1) per cell is measured. the 4th mea of the stack is offline investigated and characterized. the electrochemical impedance spectroscopy (eis) shows that the charge transfer resistance and ionic resistance of the cell both increase. the linear sweep scan (lsv) shows the hydrogen crossover rate of the membrane has slight increase. the electron probe x-ray microanalyze (epma) illustrates further that ca, cu and fe elements distribute in the membrane and catalyst layers of the catalyst-coated membranes (ccms). the cations occupy the ion exchange sites of the nation polymer electrolyte in the catalyst layers and membrane, which results in the increase in the anode and the cathode overpotentials. the metallic impurities originate mainly from the feed water and the components of the electrolysis unit. fortunately, the degradation was reversible and can be almost recovered to the initial performance by using 0.5 m h2so4. this indicates the performance degradation of the stack running 7800 h is mainly caused by a recoverable contamination. (c) 2014 elsevier b.v. all rights reserved. |
| 学科主题 | 物理化学 |
| 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] | solid polymer electrolyte ; fuel-cells ; hydrogen-production ; oxygen evolution ; sodium-ion ; impedance ; electrocatalysis ; contamination ; performance ; catalyst |
| 资助信息 | 1，1 |
| 收录类别 | SCI |
| 原文出处 | 520 |
| 语种 | 英语 |
| WOS记录号 | WOS:000339601800059 |
| 公开日期 | 2014-09-11 |
| 源URL | [http://159.226.238.44/handle/321008/119698]  |
| 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, Fuel Cell Syst & Engn Lab, Dalian 116023, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Shucheng,Shao, Zhigang,Yu, Hongmei,et al. Investigations on degradation of the long-term proton exchange membrane water electrolysis stack[J]. journal of power sources,2014,267:515-520. |
| APA | Sun, Shucheng,Shao, Zhigang,Yu, Hongmei,Li, Guangfu,&Yi, Baolian.(2014).Investigations on degradation of the long-term proton exchange membrane water electrolysis stack.journal of power sources,267,515-520. |
| MLA | Sun, Shucheng,et al."Investigations on degradation of the long-term proton exchange membrane water electrolysis stack".journal of power sources 267(2014):515-520. |
入库方式： OAI收割
来源：大连化学物理研究所
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