A kind of modified pes-pvp blended anion exchange membrane for vanadium battery and preparation method thereof

An anion-exchange membrane and vanadium battery technology, applied in the field of electrochemical materials, can solve the problems of affecting battery efficiency, poor barrier property of vanadium ions, and high price, and achieve high energy efficiency, high non-volatility, and long service life.
CN105789657BActive Publication Date: 2018-09-11工业和信息化部电子第五研究所华东分所
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
工业和信息化部电子第五研究所华东分所
Publication Date
2018-09-11

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Abstract

The invention discloses a modified PES-PVP blended anion exchange membrane for vanadium batteries. A modified PES-PVP blended anion exchange membrane for vanadium batteries of the present invention is prepared by blending quaternized modified PES and PVP, and the quaternized modified PES is quaternized with a quaternary ammonium base A mixture of modified PES and imidazole quaternized modified PES; after blending the quaternary ammonium base quaternized modified PES anion exchange membrane, imidazole quaternized modified PES anion exchange membrane and PVP, the combination of the three excellent performance. The modified PES-PVP blended anion exchange membrane prepared by the present invention has good vanadium resistance performance, ion selection performance, excellent stability and mechanical performance, and high coulombic efficiency when applied to an all-vanadium redox flow battery ,long lasting.
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Description

technical field

[0001] The invention belongs to the field of electrochemical materials, in particular to a modified PES-PVP blended anion exchange membrane for vanadium batteries and a preparation method thereof. Background technique

[0002] The full name of the vanadium battery is the vanadium redox flow battery (Vanadium Redox Battery, abbreviated as VRB). For energy conversion, the active substance participating in the reaction is liquid vanadium ions. The vanadium battery is a liquid flow energy storage battery with high efficiency, environmental protection, large capacity, high current charge and discharge, and deep discharge.

[0003] Vanadium battery is mainly composed of electrode material, electrolyte and ion exchange membrane. Among them, the ion exchange membrane is one of the core components of the vanadium battery. How to obtain a separator with high selectivity, low resistance and sufficient chemical stability is a key factor restricting the performance of th...

Claims

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