YuKe Su, Suqin Liu, Weiwei Zhu, Kui Huang, Guangyuan Mu, Peng Jiang, Jianhui Liu, Guang Yang, Zhen He, Jue Wang
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引用次数: 0
Abstract
The tightly connected structure of polybenzimidazole (PBI) membrane can be relaxed by solvent/nonsolvent solution to achieve a high proton conductivity for vanadium redox flow battery (VRFB). However, the nature behind the solvent/nonsolvent strategy is not unraveled. This work proposes a guideline to analyze the effect of PBI membrane relaxing formulas based on the interactions between different components in membranes. The supreme-efficient PBI membrane derived by the DMSO/formamide formula according to the guideline displays a marvelous performance for VRFB, with the proton conductivity boosted by 4300% (from 1.93 to 83.33 mS cm-1), and VRFB assembled with this membrane achieves an outstanding energy efficiency of 82.5% under 200 mA cm-2. Moreover, this work profoundly unravels the structure, property and performance relationship of PBI membrane, which is of great value for the development of membranes.
期刊介绍：
ChemSusChem
Impact Factor (2016): 7.226
Scope:
Interdisciplinary journal
Focuses on research at the interface of chemistry and sustainability
Features the best research on sustainability and energy
Areas Covered:
Chemistry
Materials Science
Chemical Engineering
Biotechnology
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