锂离子蓄电池碳负极材料结晶性与电性能关系  

Relations between crystallinity and electric performance of carbon anode materials for Li-ion battery

作　　者：宋文生[1] 胡成秋[2] 尚尔超 

机构地区：[1]天津大学化工学院,天津300072 [2]鞍山热能研究院,辽宁鞍山114004

出　　处：《电源技术》2002年第6期428-430,共3页Chinese Journal of Power Sources

摘　　要：通过X射线衍射检测了天然鳞片石墨、石墨化中间相炭微球 (MCMB)、煤沥青炭化物、酚醛树脂炭化物、沥青包覆石墨炭化物、沥青包覆MCMB炭化物、酚醛树脂包覆石墨炭化物及酚醛树脂包覆MCMB炭化物结晶性 ,并由模拟电池检测这些材料的首次充放电性能 ;另外 ,对石墨及包覆石墨炭化物进行了循环充放电实验。结果表明 :材料的结晶性对首次充放电效率影响很大 ;包覆可以显著提高石墨的首次充放电效率及循环放电容量 ,并很快达到稳定循环。The crystallinity of natural flake graphite, graphitized mesocarbon microbeads(MCMB), carbonized coal pitch, carbonized phenol formaldehyde resin, carbonized graphite coated with coal pitch, carbonized MCMB coated with coal pitch, carbonized graphite coated with phenol formaldehyde resin and carbonized MCMB coated with phenol formaldehyde resin was tested by X ray diffraction and the initial charge/discharge performance of the materials was tested with simulative batteries. The cyclic charge/discharge experiments of the graphite, the carbonized graphite coated with coal pitch and the carbonized graphite coated with phenol formaldehyde resin were also carried out. The results show that the crystallinity of material has great effect on its initial charge/discharge efficiency while coating can improve the initial charge/discharge efficiency and cyclic discharge capacity of graphite and make the cycle stable soon.

关 键 词：锂离子蓄电池 碳负极材料 结晶性 电性能 

分 类 号：TM912.2[电气工程—电力电子与电力传动]