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Preparation of PVDF/molecular sieve ion exchange membrane and research on reverse electrodialysis performance

Authors： Cheng Hao, Chen Wenxiang, Zhuge Xiangqun, Ding Zhengping, Luo Kun

Units： Changzhou Key Laboratory of Intelligent Manufacturing and Advanced Technology for Power Battery, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, P R China

KeyWords： Molecular Sieve; PVDF Membranes; Doping modification; Reverse Electrodialysis

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2022,42(5):94-101

Abstract：

Reverse electrodialysis is a new power generation method with potential for research and development. Ion exchange membrane is the core component of reverse electrodialysis power generation, and its electrochemical and physicochemical properties determine the power generation performance. PVDF/molecular sieve composite membrane was prepared by phase conversion method, and then styrene was grafted and sulfonated to obtain PVDF/molecular sieve composite ion exchange membrane. The experimental results show that the optimum addition of molecular sieve in PVDF/molecular sieve composite ion exchange membrane is 1%, the water content of the membrane is 45.8%, the resistance is 11.4 Ω/cm2 and the ion conductivity is 2.17×10-3 S/cm2, the ion exchange capacity is 2.5 mM/g. Compared with commercial cation exchange membrane, the salt difference power generation is increased from 0.87 W/m2 to 1.05 W/m2, with an increase of 20%.

Funds：

国家自然科学基金（51874051，52111530139）、常州市应用基础研究项目（CJ20210079)、常州市科技项目（CQ20204034）和广西科技计划重点研发项目（桂科AB17292017）

AuthorIntro：

程浩（1997-），男，江苏南通，硕士研究生，研究方向为新能源材料与技术，E-mail：943470367@qq.com

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