石油沥青基中间相炭微球用作锂离子电池负极材料时与电解液的相容性  

COMPATIBILITY OF ELECTROLYTES WITH PETROLEUM PITCH-BASED MESOCARBON MICROBEADS USED AS THE NEGATIVE ELECTRODE MATERIALS IN LITHIUM ION BATTERIES

作　　者：徐仲榆[1] 朱鹏[2] 彭丽华[2] 郑洪河[1] 尹笃林[2] 

机构地区：[1]湖南大学新型炭材料研究所,长沙410082 [2]湖南师范大学化学化工学院,长沙410081

出　　处：《炭素技术》2002年第1期1-7,共7页Carbon Techniques

基　　金：湖南省科技厅重点项目 ( 0 0GK10 0 6) ;教育部博士点基金资助课题 ( 2 0 0 0 5 3 2 0 9)

摘　　要：选择经最高热处理温度tmax=2 80 0℃处理过的石油沥青基中间相炭微球 (P -MCMB)试样作为锂离子电池 (LIB)的负极材料 ,组配了 6种常用的电解液 ,运用恒电流充、放电法 ,粉末微电极循环伏安法 ,考察了P-MCMB试样在各种电解液中的充、放电性能。采用FTIR光谱技术测定了P -MCMB试样在 6种电解液中首次充电时表面生成的SEI膜的化学成分。实验结果表明 ,PPetroleum pitch based Mesocarbon Microbeads (P MCMB) were heat treated at 2 800 ℃, The heat treated samples were used as the negative electrode materials in lithium ion batteries. The charging discharging performance of the samples in six kinds of common electrolytes was investigated by the galvanostatic charging discharging experiments and the powder microelectrode cyclic voltametry experiments. The chemical composition of the SEI film, which formed in the electrolytes during the first charging process, was analyzed by FT IR spectrum. The experimental results indicate that the compatibility of the electrolytes with the P MCMB samples is related to the textures of the SEI films.

关 键 词：锂离子电池 负极材料 石油沥青基MCMB 电解液 相容性 中间相炭微球 

分 类 号：TM911.14[电气工程—电力电子与电力传动] TM910.3