摘要
采用熔盐浸渍法合成了用于可充锂电池的正极材料锂锰氧化物（LixMnO2）,使用原子吸收光谱、充放电测试、X射线衍射、傅立叶红外光谱等方法对合成产品的化学成分、电化学性能及结构进行了分析,确定了最佳锂锰配比为0.30∶1.00.将Li0.30MnO2作为正极材料的2016型扣式锂电池,在2.00～3.25 V之间,用0.5 mA电流100%DOD充放电时,循环30次后的容量衰减了7.3%;2.0 mA电流100%DOD充放电时,循环20次后的容量保持率为89.4%.
Lithium manganese dioxide （LizMn02） cathode material for rechargeable lithium cell was synthesized by maltimpregnation method. AAS, charge-dlscharge test, XRD, FTIR were used to analyze the chemical composition, electrochemical performance and structure,the optimal ratio of Li/Mn was 0.30： 1.00. Li0.30MnO2 was used as cathode material in 2016 type button lithium cell. With the voltage range from 2.00 V to 3.25 V, 100% depth of charging-discharging at 0.5 mA current, after 30 cycles, the capacity decreased 7.3%, while 100% depth of charging-discharging at 2.0 mA current, after 20 cycles, the capacity retention rate was 89.4%.
出处
《电池》
CAS
CSCD
北大核心
2006年第2期101-103,共3页
Battery Bimonthly
基金
国家自然科学基金(20273047)
教育部博士点基金(20020056045)
关键词
锂电池
熔盐浸渍法
锂锰氧化物
正极材料
lithium cell
melt-impregnation method
lithium manganese dioxide
cathode material
