SPPEK/WO₃ hybrid membrane fabricated via hydrothermal method for vanadium redox flow battery

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• 作者：Nanfang Wang^a ; ^b ; ^{cdwnf@126.com} ; Sui Peng^a ; Hongmei Wang^a ; Yanhua Li^a ; Suqin Liu^a ; ^{sqliu2003@126.com} ; Younian Liu^a
• 关键词：Vanadium redox battery ; Hybrid membrane ; Hydrothermal method ; Vanadium ion permeability
• 刊名：Electrochemistry Communications
• 出版年：2012
• 期刊代码：29_13882481
• 类别：ch
• 出版时间：April, 2012
• 卷：17
• 期：Complete
• 页码：30-33
• 文件大小：788 K

摘要

A SPPEK/WO₃ hybrid membrane was fabricated by a hydrothermal method to improve its performance in vanadium redox flow battery (VRB). The morphology of the hybrid membrane revealed that WO₃ phase was well formed in the SPPEK matrix. At 50 mA/cm², the VRB single cell with SPPEK/WO₃ membrane presented a lower self-discharge rate (218 h above 0.8 V) and a higher coulombic and energy efficiency (98.07%and 78.06%), ascribed to its higher ionic selectivity (5.81 脳 10⁴ min S/cm³), compared with Nafion system. The hybrid membrane exhibited a stable performance during 100 cycles.