文献类型：期刊文献

英文题名：Two-Dimensional MFI-Type Zeolite Flow Battery Membranes

作者：Zhang, Dezhu[1,3];Huang, Kang[1,3];Xia, Yongsheng[1];Cao, Hongyan[1];Dai, Liheng[2];Qu, Kai[2];Xiao, Lan[1];Fan, Yiqun[3];Xu, Zhi[1,2]

机构：[1]Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, 30 Puzhu South Rd, Nanjing 211816, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Suzhou Lab, Suzhou Inst, 388 Ruoshui Rd, Suzhou 215123, Peoples R China

年份：2023

卷号：62

期号：43

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20233814749438);WOS:【SCI-EXPANDED(收录号:WOS:001068281100001)】；

基金：This work is supported by National Key Research and Development Program of China (Grant Nos. 2021YFB3801301), National Natural Science Foundation of China (Grant Nos. 22075076, 22278211 and 21921006). We sincerely thank Prof. Yu Han and Dr. Cailing Chen from King Abdullah University of Science and Technology for iDPC-STEM characterization.

语种：英文

外文关键词：Flow Batteries; Two-Dimensional Membranes; ZSM-5; Zeolite Nanosheets

摘要：Vanadium flow battery (VFB) is one of the most reliable stationary electrochemical energy-storage technologies, and a membrane with high vanadium resistance and proton conductivity is essential for manufacturing high-performance VFBs. In this study, a two-dimensional (2D) MFI-type zeolite membrane was fabricated from zeolite nanosheet modules, which displayed excellent vanadium resistance (0.07 mmol L-1 h(-1)) and proton conductivity (0.16 S cm(-1)), yielding a coulombic efficiency of 93.9 %, a voltage efficiency of 87.6 %, and an energy efficiency of 82.3 % at 40 mA cm(-2). The self-discharge period of a VFB equipped with 2D MFI-type zeolite membrane increased up to 116.2 h, which was significantly longer than that of the commercial perfluorinated sulfonate membrane (45.9 h). Furthermore, the corresponding battery performance remained stable over 1000 cycles (>1500 h) at 80 mA cm(-2). These findings demonstrate that 2D MFI-type membranes are promising ion-conductive membranes applicable for stationary electrochemical energy-storage devices.