免黏合剂硅碳负极材料的制备  

Preparation of binder-free silicon carbon anode materials

作　　者：刘进 周站立 周华[1,2,3] 孙瑞敏 LIU Jin;ZHOU Zhan-li;ZHOU Hua;SUN Rui-min(Research Center of Functional Materials,Kaifeng University,Kaifeng,Henan 475004,China;Henan Province Engineering Technology Research Center for Advanced Materials and Green Process,Kaifeng,Henan 475004,China;Henan Key Laboratory for Advanced Silicon Carbide Materials,Kaifeng,Henan 475004,China;Henan Rijin New Energy Technology Co.,Ltd.,Xinxiang,Henan 453000,China)

机构地区：[1]开封大学功能材料研究中心,河南开封475004 [2]河南省先进材料与绿色过程工程技术研究中心,河南开封475004 [3]河南省先进碳化硅材料重点实验室,河南开封475004 [4]河南日进新能源科技有限公司,河南新乡453000

出　　处：《电池》2022年第2期185-189,共5页Battery Bimonthly

基　　金：河南省科技攻关项目(212102210243);河南省高等学校重点科研项目(21A480007,21B430010);开封市科技公关项目(2101002)。

摘　　要：采用球磨与后烧结处理工艺,以光伏产业废硅粉为原料,白糖为碳包覆材料,在球料比1∶1下球磨30 h, 800℃下烧结2 h,制得纳米级硅碳材料。将该材料与二氧化钛、碳纳米管混合,制得锂离子电池用免黏合剂硅碳负极材料。以0.5 C的电流在0~2 V充放电,该材料的首次放电比容量达到713 mAh/g,第100次循环时仍保持在522 mAh/g。Nano scale silicon carbon materials were prepared by ball milling and post sintering process, using waste silicon powder from photovoltaic industry as raw material and white sugar as carbon coating material, then ball milling for 30 h with mass ratio of 1∶1 and sintering at 800 ℃ for 2 h.The obtained materials were mixed with titanium dioxide and carbon nanotubes, receiving a binder-free silicon carbon anode material for Li-ion battery.The materials exhibited an initial specific discharge capacity of 713 mAh/g when charged-discharged at a current of 0.5 C in 0-2 V,retained 522 mAh/g at the 100 th cycle.

关 键 词：硅碳负极材料 光伏废料 碳包覆 免黏合剂 

分 类 号：TM912.9[电气工程—电力电子与电力传动]