文献类型：期刊文献

中文题名：Highly Conductive Proton Selectivity Membrane Enabled by Hollow Carbon Sieving Nanospheres for Energy Storage Devices

作者：Kang Huang[1];Shuhao Lin[1];Yu Xia[1];Yongsheng Xia[1];Feiyan Mu[1];Yuqin Lu[1];Hongyan Cao[1];Yixing Wang[2];Weihong Xing[1];Zhi Xu[2]

机构：[1]State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemical Engineering,Nanjing Tech University,Nanjing 211816,China;[2]State Key Laboratory of Chemical Engineering,School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China

年份：2023

期号：9

起止页码：69

中文期刊名：Engineering

外文期刊名：工程（英文）

收录：CSTPCD;;Scopus;CSCD:【CSCD2023_2024】；PubMed;

基金：the support from the National Key Research and Development Program of China(2021YFB3801301);the National Natural Science Foundation of China(22075076,21908098,and 21908054);the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)。

语种：英文

中文关键词：Ion conductive membrane;Hollow carbon sieving nanosphere;Proton transport channel;Flow battery

摘要：Ion conductive membranes(ICMs)with highly conductive proton selectivity are of significant importance and greatly desired for energy storage devices.However,it is extremely challenging to construct fast proton-selective transport channels in ICMs.Herein,a membrane with highly conductive proton selectivity was fabricated by incorporating porous carbon sieving nanospheres with a hollow structure(HCSNs)in a polymer matrix.Due to the precise ion sieving ability of the microporous carbon shells and the fast proton transport through their accessible internal cavities,this advanced membrane presented a proton conductivity(0.084 S·cm^(-1))superior to those of a commercial Nation 212(N212)membrane(0.033S·cm^(-1))and a pure polymer membrane(0.049 S·cm^(-1)).The corresponding proton selectivity of the membrane(6.68×10^(5) S·min·cm^(-3))was found to be enhanced by about 5.9-fold and 4.3-fold,respectively,compared with those of the N212 membrane(1.13×10^(5) S·min·cm^(-3))and the pure membrane(1.56×10^(5) S·min·cm^(-3)).Low-field nuclear magnetic resonance(LF-NMR)clearly revealed the fast protonselective transport channels enabled by the HCSNs in the polymeric membrane.The proposed membrane exhibited an outstanding energy efficiency(EE)of 84%and long-term stability over 1400 cycles with a0.065%capacity decay per cycle at 120 mA·cm^(-2) in a typical vanadium flow battery(VFB)system.