PVDF复合粘结剂的制备及其锌空电池电化学稳定性研究  

Preparation of PVDF composite binder and study on its electrochemical stability in zinc-air battery

作　　者：金虹 周来宏 查国君 苏强 丁海峰 刘琛 倪萍 JIN Hong;ZHOU Lai-hong;ZHA Guo-jun;SU Qiang;DING Hai-feng;LIU Chen;NI Ping(School of New Energy Science and Engineering,Xinyu University,Xinyu 338004,China)

机构地区：[1]新余学院新能源科学与工程学院,江西新余338004

出　　处：《现代化工》2025年第4期197-200,207,共5页Modern Chemical Industry

基　　金：江西省自然科学基金项目(20224BAB204009);江西省教育厅科技项目(GJJ2202205,GJJ212319)。

摘　　要：通过调控Nafion和PVDF组成比例制备PVDF复合粘结剂(10%PVN),并用于组装FeMOF-10%PVN锌空电池。通过锌空电池长时间充放电循环电化学测试,研究复合粘结剂对电池长期运行微观结构及性能的影响。结果表明,经过170 h长时间充放电循环,10%PVN复合粘结剂可以显著抑制Fe-MOF催化层脱落和团聚,较好地保持催化剂粒子原有的形貌和结构。170 h充放电循环后,FeMOF-10%PVN电池的峰功率密度衰减率仅为7.6%,不到FeMOF-N组装电池衰减率(74.0%)的1/9。因此,10%PVN复合粘结剂可以有效提升Fe-MOF锌空电池催化层长期运行稳定性。Polyvinylidene fluoride(PVDF)composite binder(referred to as 10%PVN)is prepared through adjusting the composition ratio of Nafion and PVDF,and used to assemble FeMOF-10%PVN zinc-air battery.Through long-term charge-discharge cycle electrochemical tests for the zinc-air battery,the effects of the composite binder on the micro-structure and performance of the battery during long-term operation are studied.Study results show that after 170 h of long-term charge-discharge cycling,the 10%PVN composite binder can significantly inhibit the shedding and agglomeration of Fe-MOF catalyst layer,and maintains better the original morphology and structure of the catalyst particles.After 170 h of charge-discharge cycling,the peak power density of FeMOF-10%PVN battery decays 7.6%only,which is less than one-ninth of the decay rate(74.0%)of the FeMOF-N assembled battery.Therefore,the 10%PVN composite binder can effectively improve the long-term operation stability of Fe-MOF zinc-air battery catalyst layer.

关 键 词：锌空电池 PVDF Fe-MOF衍生催化剂 稳定性 

分 类 号：TM911.41[电气工程—电力电子与电力传动]