中文摘要：

在过渡金属化合物氯化钴参与下低温（〈1000℃）处理中间相炭微球（MCMBs），制备高容量锂离子电池的炭负极材料。Raman分析和X-射线衍射分析表明，热处理后MCMBs以低温炭结构为主，但微球表面的碳微晶尺寸较内部增大；电化学恒电流测试表明，热处理后MCMBs的可逆容量明显提高，在不降低充电容量的前提下将首次库仑效率从52．2％提高至86．7％，循环性能也得到积极改善。认为热处理后MCMBs电化学性能的提高是由于低温催化热处理使得材料表面结构更加有序化，从而阻止电解液分子的进入及发生不可逆电化学反应。

英文摘要：

Anode materials for Li-ion secondary batteries were prepared by treating mesocarbon microbeads （MCMBs） in presence of CoCl2 at a temperature below 1000 ℃. They were characterized by Raman spectroscopy and X-ray diffraction. Results indicated that the heat treated samples belonged to low temperature carbons, but micro-crystals on the surface of the treated MCMBs became ordered. The reversible discharge capacity of the MCMBs was significantly improved, the coulombic efficiency was increased from 52.2 % to 86.7 %, and the cycling performance became better. These improvements were ascribed to the ordered structure on the surface of the treated samples that tended to prevent the electrolyte molecules from penetrating into the inside of the MCMBs, and as a result, reduced the irreversible electrochemical reactions.