Membrane Science and Technology

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Scale-up of a novel proton conductive membrane and characterization for VRB application

Authors： LIU Ping, Qingge Geletu, GUO Weinan, CHEN Xiao, CHU Xiao, WANG Baoguo*

Units： Department of Chemical Engineering, Tsinghua University

KeyWords： proton conductive membrane; VRB; conductivity; battery test

ClassificationCode：TQ152

year,volume(issue):pagination： 2012, 32(2):24-29

Abstract：

This study proposed a novel approach to manufacture proton conductive membranes to meet the requirement of developing battery technology for renewable energy storage. Using polyvinylidene fluoride(PVDF) and sodium methyl allylsulfonate(SAS), a membrane of 1000mm×800mm(Length ×Width)was successfully prepared. Its conductivity apparently changed with SAS composition. When SAS’s mass fraction was 20%, the membrane conductivity reached . Moreover, the membranes are of advanced performance in chemical resistance and mechanical stability, remaining 97.5% of sample weight after treated in Fenton solution, bursting strength of 2.0MPa, yield strength of 23N/mm2 and thermal degeneration temperature above 400℃. The test of flow battery showed a self-discharge rate of , columbic efficiency of 93%. The membrane had an overall good performance as a promising separator for the commercialization of vanadium redox flow battery (VRB).

Funds：

国家自然科学基金（20876086; 21076112）；国家“863”课题（2007AA05Z245）；国家重点基础研究发展计划（973计划）项目（2010CB227202）

AuthorIntro：

刘平，男，硕士研究生，清华大学化工系，质子传导膜制备研究，p-liu04@mails.tsinghua.edu.cn通信联系人：王保国，教授，清华大学化工系，010-62788777，bgwang@tsinghua.edu.cn

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