| Study on the performance of low cost ultra thin composite membrane for different electrolyte of Vanadium redox flow battery systems |
| Authors： ZHAO Lina，HE Hongxiang, ZHAO Huan, LIU Jianguo, YAN Chuanwei |
| Units： Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China |
| KeyWords： composite membrane; vanadium redox flow battery; mixed acid system; low cost |
| ClassificationCode：TQ152 |
| year,volume(issue):pagination： 2020,40(4):92-98 |
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Abstract： |
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All Vanadium redox flow battery(VRFB) is one of the most feasible large-scale energy storage technologies for renewable power generation of wind and solar power. The development of low-cost and high-performance membrane is the focus of VRFB research and engineering. The mixed acid (H2SO4 + HCl) vanadium solution system has showed practical feasibility in improving battery performance and expandingoperating temperature range.The performance of the membrane in different vanadium electrolyte need to be studied to accelerate energy storageapplication of VRFB. In this paper, with commercial and cheap polyolefin microporous membrane as support and perfluorosulfonic acid ion exchange resin as composite phase, a new type of ultra-thin composite membrane for VFRB was designed and prepared. The ion conduction, vanadium ion permeation and battery performance in different systems of sulfuric acid and hydrochloric acid were studied. The results show that the composite membrane represented high mechanical strength and low swelling rate. The battery performance of the composite membrane in the mixed solution of sulfuric acid and hydrochloric acid is excellent: 100mA / cm2, EE80%. At the same time, the composite membrane has a lower cost (only 40-50$/m2). This low cost, high performance composite membrane showed a promising prospect for VRFB application. |
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Funds： |
| 自然基金：铁铬液流电池负极催化-抑氢的协同机制与动力学研究（No.21975267）；沈阳市重大科技成果转化项目：高性能钒电池电堆、模块及储能系统技术转化（项目编号：Z17-7-026） |
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AuthorIntro： |
| 第一作者：赵丽娜（1982-），女，辽宁锦州人，硕士，助理研究员，研究方向新能源材料开发，E-mail:zhaolina0327@163.com。 通讯作者：刘建国(1978-)，副研究员，E-mail:jgliu@imr.ac.cn。 |
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Reference： |
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