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

doi:10.1016/j.ensm.2022.04.033

IMR OpenIR

	Zwitterionic interface engineering enables ultrathin composite membrane for high-rate vanadium flow battery
	Zhang, Denghua 1,2; Zhang, Xihao 1,2; Luan, Chao 1; Tang, Biao 3; Zhang, Zhongyu 3; Pu, Nianwen 3; Zhang, Kaiyue 1; Liu, Jianguo 1; Yan, Chuanwei 1
通讯作者	Zhang, Kaiyue(kyzhang@imr.ac.cn) ; Liu, Jianguo(jgliu@imr.ac.cn)
	2022-08-01
发表期刊	ENERGY STORAGE MATERIALS
ISSN	2405-8297
卷号	49 页码:471-480
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.
关键词	Vanadium flow battery Ultrathin composite membrane Zwitterionic interface Conductivity Ion selectivity
资助者	National Natural Science Foundation of China ; Central Guidance on Local Science and Technology Development Fund of Liaoning Province
DOI	10.1016/j.ensm.2022.04.033
收录类别	SCI
语种	英语
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
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000798010600001
出版者	ELSEVIER
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/174198
专题	中国科学院金属研究所
通讯作者	Zhang, Kaiyue; Liu, Jianguo
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China 3.Sichuan Xingming Energy & Environm Protect Technol, Chengdu, Sichuan, 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.