静电纺聚偏氟乙烯@硅藻土锂离子电池隔膜的制备及性能  

Preparation and Properties of Polyvinylidene Fluoride@Diatomite Fiber Membranes by Eletrospinning as Separator of Lithium-Ion Batteries

作　　者：刘丽鑫 董建红 张光辉 朱陆益 王新强[1] 许东[1] CHOW Yuktak LIU Lixin;DONG Jianhong;ZHANG Guanghui;ZHU Luyi;WANG Xinqiang;XU Dong;CHOW Yuktak(State Key Laboratory of Crystal Materials,Institute of Crystal Materials,Shandong University,Ji′nan 250100,China;Department of Electrical Engineering,City University of Hong Kong,Hong Kong,China)

机构地区：[1]山东大学晶体材料研究所,晶体材料国家重点实验室,济南250100 [2]香港城市大学电子工程系,中国香港

出　　处：《应用化学》2020年第12期1441-1446,共6页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(51472144);山东大学青年学者奖励计划(2016WLJH27);中央高校基础研究基金(2082019014)资助。

摘　　要：以聚偏氟乙烯(PVDF)和硅藻土为原料,通过静电纺丝法制备PVDF@硅藻土复合纤维膜,用于锂离子电池隔膜。研究了隔膜的吸液率、热稳定性和电化学性能等。添加硅藻土可有效提高复合膜的电解液吸收率和电化学性能,其中吸液率可达623.6%,相比于PVDF膜和聚丙烯(PP)膜具有优异的循环性能和倍率性能。Using polyvinylidene fluoride(PVDF)and diatomite as raw materials,PVDF@diatomite composite fiber membranes were prepared by electrospinning for lithium-ion battery.The electrolyte absorption rate,thermal stability and electrochemical properties of the separators were investigated.The addition of diatomite can effectively improve the electrolyte absorption rate and electrochemical performance of the composite separators.The electrolyte uptake is up to 623.6%.Compared with PVDF and polypropylene(PP)separators,it has excellent cycle and rate performance.

关 键 词：锂离子电池 隔膜 聚偏氟乙烯 硅藻土 

分 类 号：O646[理学—物理化学]