The influence of sodium ion as a potential fuel impurity on the direct methanol fuel cells
文献类型：期刊论文
| 作者 | Jie, Xiao1,2; Shao, Zhi-Gang1; Hou, Junbo3; Sun, Gongquan1; Yi, Baolian1 |
| 刊名 | electrochimica acta
 |
| 出版日期 | 2010-06-30 |
| 卷号 | 55期号:16页码:4783-4788 |
| 关键词 | Direct methanol fuel cell (DMFC) Cationic impurities In situ Reference electrode Impedance |
| 产权排序 | 1;1 |
| 通讯作者 | 邵志刚 |
| 英文摘要 | na(+) is a likely intrinsic impurity in water and is a sort of common cation impurity in the direct methanol fuel cells (dmfcs). in this paper, the effect of na(+) on the dmfc electrochemical response is studied by adding na(+) into the methanol water solution fed in the anode of dmfc. the dynamic variation of cell voltage results shows that the dmfc performance degraded by the presence of na(+) impurity, and the higher concentration of na(+) impurity, the higher poisoning rate is observed. in the meantime, an external reference electrode is used to measure the potential and impedance of the cathode and anode. it is found that the dramatic decrease of the cell voltage is mainly ascribed to the increase of the cathode overpotential which is caused by na(+) exchange with protons in the cathode catalyst layer. the electrochemical impedance measurements suggest that the lack of available protons and low oxygen concentration at the cathode catalytic sites contributed to this degradation. furthermore, the recovery strategy is introduced and it is found that the poisoned mea could be partly recovered by immersing in 0.5 m h(2)so(4) solution for 4 h. (c) 2010 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] | perfluorosulfonated ionomer membranes ; oxygen reduction kinetics ; electrochemical impedance ; perfluorinated ionomer ; catalyst layer ; temperature ; electrodes ; transport ; platinum ; contamination |
| 收录类别 | SCI |
| 原文出处 | false |
| 语种 | 英语 |
| WOS记录号 | WOS:000278612100017 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/103637]  |
| 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, Laio Ning, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Univ Leoben, Dept Phys Chem, A-8700 Leoben, Austria |
| 推荐引用方式 GB/T 7714 | Jie, Xiao,Shao, Zhi-Gang,Hou, Junbo,et al. The influence of sodium ion as a potential fuel impurity on the direct methanol fuel cells[J]. electrochimica acta,2010,55(16):4783-4788. |
| APA | Jie, Xiao,Shao, Zhi-Gang,Hou, Junbo,Sun, Gongquan,&Yi, Baolian.(2010).The influence of sodium ion as a potential fuel impurity on the direct methanol fuel cells.electrochimica acta,55(16),4783-4788. |
| MLA | Jie, Xiao,et al."The influence of sodium ion as a potential fuel impurity on the direct methanol fuel cells".electrochimica acta 55.16(2010):4783-4788. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。