Excellent ion selectivity of Nafion membrane modified by PBI via acid-base pair effect for vanadium flow battery
文献类型：期刊论文
| 作者 | Zhao, Yingying1,2; Zhang, Denghua1,2; Zhao, Lina2; Wang, Shaoliang2; Liu, Jianguo2; Yan, Chuanwei2 |
| 刊名 | ELECTROCHIMICA ACTA
 |
| 出版日期 | 2021-10-20 |
| 卷号 | 394页码:8 |
| 关键词 | Acid-base pair effect Membrane Nafion Polybenzimidazole Vanadium flow battery |
| ISSN号 | 0013-4686 |
| DOI | 10.1016/j.electacta.2021.139144 |
| 通讯作者 | Wang, Shaoliang(wangshaoliang1221@163.com) |
| 英文摘要 | As the key material of Vanadium flow battery (VFB), the properties of ion exchange membrane limit the battery performance and cost of VFB to some extent. Nafion membrane of Dupont, one of the most employed membranes in VFB, is also exposed to some issues such as high cost and low ion selectivity. To improve ion selectivity of Nafion membrane, polybenzimidazole (PBI), functional groups of which can be ionized to a positive charge and prevent vanadium ions from crossing the membrane, is introduced to prepare reinforced Nafion membrane (Nafion/PBI membrane). By this way, excellent conductivity and vanadium ion selectivity of Nafion membrane are optimized via the "acid-base pair" effect. Furthermore, a series of PBI contents have been optimized and the battery with Nafion/PBI membrane of 1 wt% PBI exhibits excellent performance (coulombic efficiency: 97.72%, energy efficiency: 81.31% at 200 mA cm(-2)). In the long-term cycles, higher capacity retention and superior stability of the battery with Nafion/PBI membrane (1 wt% PBI) are delivered than Nafion 212 membrane. Thus, Nafion/PBI membrane is indeed a promising candidate to promote the whole properties of VFB by surmounting the trade-off between proton conductivity and vanadium ion permeability. (C) 2021 Elsevier Ltd. All rights reserved. |
| 资助项目 | National Natural Science Foundation of China[21975267] |
| WOS研究方向 | Electrochemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000702881200005 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/166741]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang, Shaoliang |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Yingying,Zhang, Denghua,Zhao, Lina,et al. Excellent ion selectivity of Nafion membrane modified by PBI via acid-base pair effect for vanadium flow battery[J]. ELECTROCHIMICA ACTA,2021,394:8. |
| APA | Zhao, Yingying,Zhang, Denghua,Zhao, Lina,Wang, Shaoliang,Liu, Jianguo,&Yan, Chuanwei.(2021).Excellent ion selectivity of Nafion membrane modified by PBI via acid-base pair effect for vanadium flow battery.ELECTROCHIMICA ACTA,394,8. |
| MLA | Zhao, Yingying,et al."Excellent ion selectivity of Nafion membrane modified by PBI via acid-base pair effect for vanadium flow battery".ELECTROCHIMICA ACTA 394(2021):8. |
入库方式： OAI收割
来源：金属研究所
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