高镍三元正极浆料凝胶化原理及解决对策  

Principle and Solutions for Slurry Gelation of High Nickel Ternary Cathode Materials

作　　者：吴于松 刘一凡[1,2] 朱伟伟 郑怡磊[1,2] WU Yu-song;LIU Yi-fan;ZHU Wei-wei;ZHENG Yi-lei(Sinochem Lantian Co.,Ltd.,Hangzhou,Zhejiang 310051,China;Zhejiang Research Institute of Chemical Industry Co.,Ltd.,Hangzhou,Zhejiang 310023,China)

机构地区：[1]中化蓝天集团有限公司,浙江杭州310051 [2]浙江省化工研究院有限公司,浙江杭州310023

出　　处：《浙江化工》2020年第9期7-10,15,共5页Zhejiang Chemical Industry

摘　　要：对高镍三元正极材料使用聚偏氟乙烯(PVDF)作为锂离子电池粘结剂时产生的浆料凝胶化现象及其原理进行了阐述。高镍正极材料中碱性物质对PVDF结构的破坏是产生凝胶化的主要原因。论述了避免产生凝胶化的主要方法,包括降低碱性物质的含量,以及提高PVDF的耐碱性。The gelation phenomenon and its principle of high nickel ternary cathode material using polyvinylidene fluoride(PVDF)as binder for lithium ion battery were described.The main reason for gelation is the destruction of PVDF structure by alkaline materials in high nickel cathode materials.The main methods to avoid gelation,including reducing the content of alkaline substance and improving the alkali resistance of PVDF,were discussed.

关 键 词：聚偏氟乙烯 锂离子电池粘结剂 高镍三元正极材料 凝胶化 

分 类 号：TQ325.4[化学工程—合成树脂塑料工业] TM912[电气工程—电力电子与电力传动]