Positron annihilation lifetime study of Nafion/titanium dioxide nano-composite membranes
文献类型：期刊论文
| 作者 | Lei, M ; Wang, YJ ; Liang, C ; Huang, K ; Ye, CX ; Wang, WJ ; Jin, SF ; Zhang, R ; Fan, DY ; Yang, HJ ; Wang, YG |
| 刊名 | JOURNAL OF POWER SOURCES
 |
| 出版日期 | 2014 |
| 卷号 | 246页码:762 |
| 关键词 | Polymer electrolyte membrane Titanium dioxide nanoparticles Humidity Positron Free volume |
| ISSN号 | 0378-7753 |
| 通讯作者 | Wang, WJ (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Positron annihilation lifetime (PAL) technique is applied for investigation of size and number density of free volumes in Nafion/TiO2-nanoparticles composite membrane. The proton transporting ability is correlated with the properties of free volume inside the membrane. It is revealed that composite membrane with 5 wt% of TiO2 nano-fillers exhibits good electrochemical performance under reduced humidity and it can be saturated with water at relative humidity of 50%, under which ionic clusters and proton transporting channels are formed, indicating that composite membranes with 5 wt% of TiO2 nano-fillers are effective electrolyte for fuel cells operated at reduced humidification levels. The results suggest that PAL can be a powerful tool for elucidating the relationship between microstructure and ion transport in polymer electrolyte membranes. (C) 2013 Elsevier B.V. All rights reserved. |
| 资助信息 | National Basic Research Program of China [2013CB932901, 2010CB923200]; Program for New Century Excellent Talents in University; State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications, PR China); National Natural Science Foundation of China [61376018, 51372267, 51202286, 51172270, 51102019, 61177085, 51272031] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59280]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Lei, M,Wang, YJ,Liang, C,et al. Positron annihilation lifetime study of Nafion/titanium dioxide nano-composite membranes[J]. JOURNAL OF POWER SOURCES,2014,246:762. |
| APA | Lei, M.,Wang, YJ.,Liang, C.,Huang, K.,Ye, CX.,...&Wang, YG.(2014).Positron annihilation lifetime study of Nafion/titanium dioxide nano-composite membranes.JOURNAL OF POWER SOURCES,246,762. |
| MLA | Lei, M,et al."Positron annihilation lifetime study of Nafion/titanium dioxide nano-composite membranes".JOURNAL OF POWER SOURCES 246(2014):762. |
入库方式： OAI收割
来源：物理研究所
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