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Zwitterionic interface engineering enables ultrathin composite membrane for high-rate vanadium flow battery

文献类型：期刊论文

作者Zhang, Denghua2,3; Zhang, Xihao2,3; Luan, Chao3; Tang, Biao1; Zhang, Zhongyu1; Pu, Nianwen1; Zhang, Kaiyue3; Liu, Jianguo3; Yan, Chuanwei3
刊名ENERGY STORAGE MATERIALS
出版日期2022-08-01
卷号49页码:471-480
关键词Vanadium flow battery Ultrathin composite membrane Zwitterionic interface Conductivity Ion selectivity
ISSN号2405-8297
DOI10.1016/j.ensm.2022.04.033
通讯作者Zhang, Kaiyue(kyzhang@imr.ac.cn) ; Liu, Jianguo(jgliu@imr.ac.cn)
英文摘要Thin membranes with high conductivity are of great importance for high power density vanadium flow batteries (VFBs), however, the trade-off between conductivity and ion selectivity limits their further development. Herein, an ultrathin composite membrane (~10 mu m) enabled by a zwitterionic interface between conductive polybenzimidazole (PBI) and porous polyethylene (PE) substrate is proposed to break the trade-off, and greatly enhance the power density of a VFB. The zwitterionic interface is engineered by the covalent reaction between polydopamine and zwitterionic sulfonated 3-dimethylaminopropylamine (DMAPAPS). The as-fabricated composite membrane features excellent mechanical properties and high dimensional stability. Furthermore, the zwitterionic interface facilitates proton transportation while blocking vanadium-ion permeation. More importantly, the ion selectivity of the ultrathin membrane is nearly three times higher than the pure PBI membrane (i. e., 2.71 x 10(4) vs. 1.09 x 10(4) S min cm(-3)). As a result, a VFB assembled with the ultrathin membrane demonstrates a superior energy efficiency of 78.7% at 300 mA cm(-2), and achieves an excellent cycle stability over 500 cycles at 300 mA cm(-2). Therefore, the engineering of zwitterionic interface provides a promising strategy in the development of ultrathin composite membrane for high power density VFBs.
资助项目National Natural Science Foundation of China[21975267] ; Central Guidance on Local Science and Technology Development Fund of Liaoning Province[:2022JH6/100100001]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science
语种英语
WOS记录号WOS:000798010600001
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; Central Guidance on Local Science and Technology Development Fund of Liaoning Province
源URL[http://ir.imr.ac.cn/handle/321006/174197]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhang, Kaiyue; Liu, Jianguo
作者单位1.Sichuan Xingming Energy & Environm Protect Technol, Chengdu, Sichuan, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Denghua,Zhang, Xihao,Luan, Chao,et al. Zwitterionic interface engineering enables ultrathin composite membrane for high-rate vanadium flow battery[J]. ENERGY STORAGE MATERIALS,2022,49:471-480.
APA Zhang, Denghua.,Zhang, Xihao.,Luan, Chao.,Tang, Biao.,Zhang, Zhongyu.,...&Yan, Chuanwei.(2022).Zwitterionic interface engineering enables ultrathin composite membrane for high-rate vanadium flow battery.ENERGY STORAGE MATERIALS,49,471-480.
MLA Zhang, Denghua,et al."Zwitterionic interface engineering enables ultrathin composite membrane for high-rate vanadium flow battery".ENERGY STORAGE MATERIALS 49(2022):471-480.

入库方式： OAI收割

来源：金属研究所

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