共混材料Li_(1.04)Mn_2O_4/LiNi_(0.94)Co_(0.06)O_2为正极的锂离子蓄电池性能  

Performance of Li_(1.04)Mn_2O_4/LiNi_(0.94)Co_(0.06)O_2 as cathode material for lithium-ion battery

作　　者：余仲宝[1] 王静[1] 万新华[1] 刘庆国[1] 

机构地区：[1]北京科技大学固体电解质研究室,北京100083

出　　处：《电源技术》2003年第5期419-421,共3页Chinese Journal of Power Sources

摘　　要：研究试验了以共混材料Li1.04Mn2O4/LiNi0.94Co0.06O2为正极,中间相炭微球(MCMB)为负极的AA型锂离子蓄电池。结果表明:以n(Li1.04Mn2O4)/(LiNi0.94Co0.06O2)=1∶1为正极材料的AA型锂离子蓄电池,较好地综合了Li1.04 Mn2O4的高放电电压及LiNi0.94Co0.06O2的高比容量的优点,克服了Li1.04Mn2O4的比容量低及LiNi0.94Co0.06O2的放电电压偏低的缺点。在室温条件下,电池的1C放电容量达620mAh,比能量达到120Wh/kg和290Wh/L,循环400次时,其容量仍为初始容量的86%,并具有较好的倍率特性。电池在150℃荷电放置的条件下,不起火爆炸。AA size lithium-ion batteries, using Li_1.04Mn_2O_4/LiNi_0.94Co_0.06O_2 as cathode electrode and Mesophase Carbon Microballons (MCMB) as anode electrode, were investigated and tested. The results show that AA size lithium-ion batteries, using Li_1.04Mn_2O_4/LiNi_0.94Co_0.06O_2=1∶1 as cathode materials, synthesize advantages of high operating voltage of Li_1.04Mn_2O_4 and high specific capacity of LiNi_0.94Co_0.06O_2, overcome shortcomings of low specific capacity of Li_1.04Mn_2O_4 and low operating voltage of LiNi_0.94Co_0.06O_2. At ambient temperature, the batteries discharge capacity is 620 mAh and the specific energy are 120 Wh/kg and 290 Wh/L. After cycling 400 times, its discharge capacity is 86% of the initial capacity, and has excellent rate capability. When the battery of charged state is stored at 150 ℃ oven, it is not on fire and explosing.

关 键 词：锂离子蓄电池 电池性能 正极 共混材料 放电电压 Li1.04Mn2O4/LiNi0.94Co0.06O2 

分 类 号：TM912.2[电气工程—电力电子与电力传动]