【作者】 李志杰； 梁奇； 陈召勇； 贺益； 张伯兰； 于作龙；

【Author】 LI Zhi-jie;LIANG Qi;CHEN Zhao-yong;HE Yi;ZHANG Bai-lan;YU Zuo-long Chengdu Institute of Organic Chemistry,Academic Sinica, Chengdu 610041, China

【机构】 中国科学院成都有机化学研究所；

【摘要】 把采用热解甲烷合成的一种大管径的多壁碳纳米管(直径约为150nm)和一种小管径的碳纳米管(直径约25nm)用作锂离子电池的负极材料,进行了电化学性能测试。研究表明,大管径碳纳米管的首次放电客量为642.6mAh/g,首次充电容量为334.4mAh/g,首次效率为52.0%,小管径碳纳米管的首次放电容量为548.5mAh/g,首次充电容量为129.4mAh/g,首次效率为23.6%mAh/g。大管径的碳纳米管的充放电性能要好于小管径的碳纳米管。更多还原

【Abstract】 Asort of Carbon nanotubes with larg diameter (～150nm) and a sort of carbon nanotubes with smalldiameter (～25nm) obtained by Pyrolysis of methane were applied to be negative materials for lithium battery,andelectrochemical storage properties of lithium was investigated It was shown that,to carbon nanotubes with largediameter, the first discharge capacity was 642.6mAh/g,the first charge capacity was 334.4mAh/g,the firstcharge/discharge efficiency 52.0%,better than carbon nanotubes with small diameter (the first discharge capacity was548.5mAh/g, the first charge capacity was 129.4mAh/g, the first efficiency was 23.6%).更多还原