锂离子电池硅基负极材料的制备及其性能表征  

Preparation and Characterization of Silicon-based Negative Electrode Materials for Lithium-ion Batteries

作　　者：韦珍海 WEI Zhenhai(Guangdong Kaijin New Energy Technology Co.,Ltd.,Dongguan523000,Guangdong,China)

机构地区：[1]广东凯金新能源科技股份有限公司,广东东莞523000

出　　处：《四川化工》2024年第5期17-20,30,共5页Sichuan Chemical Industry

摘　　要：使用Si粉、SiO_(2)粉、丙烯作为主要原料在高温条件下反应制备得到硅基内核,用碳酸钠-氢氧化钠、三聚磷酸硅对硅基内核进行包覆,制备了一种高性能锂离子电池硅基负极材料,对样品的粒度、XRD、SEM等进行了表征,结果表明其具有良好的导电性。采用该负极材料制备了扣式电池并测试其循环性能,结果表明该材料制备的电池性能优异。A high-performance silicon-based negative electrode material for lithium-ion batteries was prepared by reacting Si powder,SiO_(2) powder,and propylene as the main raw materials under high temperature conditions to obtain a silicon-based core.The silicon-based core was coated with sodium carbonate sodium hydroxide,silicon tripolyphosphate,and silica sol.The particle size,XRD,SEM,and other characteristics of the silicon-based negative electrode material sample were characterized,and the results showed that it has good conductivity.A button type battery was prepared using silicon-based negative electrode material and subjected to charge and discharge tests.The results showed that the battery performance prepared with this material was excellent.

关 键 词：锂离子电池 硅基负极材料 表征 放电比容量 放电倍率 性能优异 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ127.2[化学工程—无机化工]