【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 ,P -MCMB试样与电解液的相容性和SEI膜的织构有关更多还原

【Abstract】 Petroleum 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.更多还原