锂离子电池石墨负极材料掺杂碳纳米管研究  

Study on graphite doped MWCNTs as anode material for lithium-ion batteries

作　　者：周国华[1,2] 皮晓明[1] 陈倪莉 

机构地区：[1]宜春学院物理科学与工程技术学院,江西宜春336000 [2]江西省高等学校锂电新能源工程技术研究中心,江西宜春336000

出　　处：《电源技术》2015年第6期1189-1190,1210,共3页Chinese Journal of Power Sources

基　　金：江西省教育厅科技项目(10705)

摘　　要：采用低速球磨法在石墨中掺杂多壁碳纳米管,制成负极极片,在真空手套箱中组装成CR2025型扣式模拟电池。测试了其充放电性能及循环性能,研究了多壁碳纳米管的加入对石墨负极材料的影响。实验结果表明:碳纳米管的加入使得材料具有更优良的充放电性能,在常温0.2 C充放电条件下,复合材料首次放电比容量达到650 m Ah/g,首次充电比容量为385 m Ah/g,循环40次后,比容量损失率仅约为3.8%。The graphite/MWCNTs composite was synthesized by low-speed ball milling, then the composite electrode was assembled into CR2025 type button batteries in vacuum glove box. The charge/discharge and cycle performance were tested. The effects of MWCNTs on graphite anode material for lithium-ion batteries were investigated. The results show that the material added MWCNTs has an excellent charging-discharging performance. The first charge and discharge capacity of composite are 385 and 650 mAh/g at 0.2 C under room temperature. The loss rate of specific capacity is only about 3.8% after 40 cycles.

关 键 词：碳纳米管 石墨 充放电性能 

分 类 号：TM912.9[电气工程—电力电子与电力传动]