硅碳复合锂离子电池负极材料制备研究  

Preparation of Silicon-carbon Anode Materials for Lithium-ion Batteries

作　　者：史锦程 安玉良[1] 闫杭亮 栾厚成 刘大龙 SHI Jin-cheng;AN Yu-liang;YAN Hang-liang;LUAN Hou-cheng;LIU Da-long(School of Material Science and Engineering,Shenyang Ligong University,Shenyang Liaoning 110159,China)

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110159

出　　处：《辽宁化工》2023年第11期1565-1567,1663,共4页Liaoning Chemical Industry

基　　金：辽宁省百千万人才项目(No.2021921035);沈阳理工大学材料加工工程重点学科开放基金(No.20210302)。

摘　　要：以工业石墨电极边角料为原料,通过包覆技术复合微米硅,制备出高性能硅碳复合锂离子电池负极材料。系统研究了硅碳质量比和沥青包覆量对硅碳复合材料的结构和电化学性能影响,得出最佳制备工艺参数:硅的质量分数为8%;包覆沥青质量分数为10%。制备出硅碳复合材料的首次放电比容量可达645.8 mAh/g,且循环性能较好。The Si/C composites were successfully prepared by coating technique process using artificial graphite electrode scrap and micro-silicon powers as the raw material.Effect of process parameters such as the ratio of silicon to carbon and mass fraction of pitch on the structure and electro-chemical property of composite was studied in detail.The results demonstrated that the first reversible discharge capacity of Si/C composite with ideal cycle performance was up to 645.8 mAh·g^(-1)under the optimal process parameters such as 10%mass fraction of pith and 8%mass fraction of silicon.

关 键 词：锂离子电池 负极材料 石墨 硅 包覆 

分 类 号：TM912.9[电气工程—电力电子与电力传动]