硅碳负极材料的合成研究  

Synthesis of Silicon Carbon Anode Materials

作　　者：刘进 Liu Jin(Henan Key Laboratory for Advanced Silicon Carbide Materials,Kaifeng 475004,China;Kaifeng Key Laboratory of Clean Production Technology of Chemical Industry,Kaifeng 475004,China;Research Center of Functional Materials,Kaifeng University,Kaifeng 475004,China;School of Material and Chemical Engineering,Kaifeng University,Kaifeng 475004,China)

机构地区：[1]河南省先进碳化硅材料重点实验室 [2]开封市化工清洁生产技术重点实验室 [3]开封大学功能材料研究中心 [4]开封大学材料与化学工程学院

出　　处：《山东化工》2019年第21期11-14,共4页Shandong Chemical Industry

基　　金：2018年度河南省高等学校重点科研项目(18B480001);开封市2018年科技发展计划项目(1808008);开封大学2017年度校级科研基金项目博士基金项目(KDBS-2017-001)

摘　　要：以光伏产业废硅粉为原料,采用球磨工艺,CMC为碳源,得到了最优的碳包覆比例,得到了一种碳包覆硅碳负极材料。借助扫描电镜(SEM)和模拟电池测试等方法,对硅碳复合材料的结构、形貌和电化学性能进行表征。结果表明,采用2.5%CMC添加量的碳包覆材料性能较优,其首次放电比容量为850.3 mAh/g,20次放电容量还保持690.8 mAh/g,为首次放电容量的81.24%mAh/g。Using waste silicon powder in photovoltaic industry as raw material,using ball milling process and CMC as carbon source,the optimal carbon coating ratio was obtained,and a carbon-coated silicon-carbon anode material was obtained.The structure,morphology and electrochemical properties of silicon-carbon composites were characterized by means of scanning electron microscopy(SEM)and simulated battery testing.The results show that the carbon coating material with 2.5%CMC addition has better performance.The first discharge specific capacity is 850.3 mAh/g,and the 20 discharge capacity is still 690.8 mAh/g,which is 81.24%mAh/g for the first discharge capacity.

关 键 词：锂离子电池 硅碳复合负极材料 光伏废料 碳包覆 

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