沥青基炭负极材料微观结构与电化学性能关系的研究  

Research on the relationship between the microstructure and electrochemical performance of pitch-based carbon anode materials

作　　者：和凤祥 陈雪[1] 吕晗 郭明聪[1] 臧娜[1] He Feng-xiang;Chen Xue;Lv Han;Guo Ming-cong;Zang Na(Sinosteel Anshan Research Institute of Thermo-energy Co.,Ltd.,Liaoning Anshan 114044,China)

机构地区：[1]中钢集团鞍山热能研究院有限公司,辽宁鞍山114044

出　　处：《炭素技术》2022年第2期36-39,共4页Carbon Techniques

基　　金：辽宁省自然科学基金指导计划(2019-ZD-0895);辽宁省重点研发计划项目(2018304002);中央引导地方科技发展专项资金项目(2021JH6-10500019);山东省重点研发项目(2020CXGC010309)。

摘　　要：以中温沥青为原料,通入气体进行交联反应,控制反应深度得到不同结构的前驱体,再置于炭化炉中进行炭化制得负极材料,对比其电化学性能,讨论同种沥青不同结构前驱体和硬炭材料性能之间的构效关系。实验结果表明:该沥青形成片状结构为主的前驱体时,所得硬炭材料性能较好,比表面积为2.636 m;/g,首次充电比容量348 mAh/g,首效为83.23%,倍率性能较好。The carbon anode materials from a medium coal tar pitch with different structures were prepared by controlling the crosslinking reaction depth and carbonization.The electrochemical properties of the carbon materials with different structures were compared and the relationship between structure and the properties of hard carbon materials was discussed.The experimental results show that the hard carbon material has good properties when the pitch forms a flake structure.The obtained hard carbon material shows the specific surface area of 2.636 m~2/g,the specific capacity of the first charge of 348 m Ah/g,the first effect of 83.23%,an high rate performance.

关 键 词：锂离子电池 硬炭 容量 倍率性能 

分 类 号：TQ522.65[化学工程—煤化学工程] TM242[一般工业技术—材料科学与工程] TM911.15[电气工程—电工理论与新技术]