科琴黑-硫复合正极材料的制备及性能研究  

Preparation and Properties of Keqin Black-sulfur Composite Cathode Material

作　　者：姚丽环 陈娟 玉富有 陈尚清 蔡敏 YAO Li-huan;CHEN Juan;YU Fu-you;CHEN Shang-qing;CAI Min(College of Chemical and Biological Engineering,Guangxi Normal University for Nationalities,Guangxi Chongzuo 532200,China)

机构地区：[1]广西民族师范学院化学与生物工程学院,广西崇左532200

出　　处：《广州化工》2022年第9期81-83,共3页GuangZhou Chemical Industry

基　　金：2021年广西自治区级大学生创新创业训练计划项目(No:S202110604168)。

摘　　要：采用溶剂热法,以乙醇-四氯化碳为溶剂,KB作为载体和分散剂,与升华硫S进行复合制备正极材料S-KB,研究结果表明KB与S进行复合未改变S的微观基本结构,且起到了将S分散的作用,充放电测试结果表明S:KB质量比为1:2时,首次放电比容量为862.5 mAh·g^(-1),循环50周后的容量保持率为94.1%,表现相对较好的电化学性能,电池比容量、循环性能方面都有明显提高。By solvothermal method,using ethanol-carbon tetracloride as the solvent,KB as the carrier and dispersant,and sublimated sulfur S composite cathode material S-KB was prepared.The results showed that KB did not change the microstructure of S,and played the role of S dispersion,charge and discharge test results showed that when the mass ratio of KB was 1:2,the first discharge specific capacity was 862.5 mAh·g^(-1),and the capacity retention rate was 94.1% after 50 weeks of cycling.The electrochemical performance of the battery was relatively good,and the specific capacity and cycling performance were significantly improved.

关 键 词：科琴黑 升华硫 溶剂热 正极材料 

分 类 号：O646[理学—物理化学]