Li_xMnO_2的熔盐浸渍法合成和性能  

Performance and synthesis of Li_xMnO_2 with melt-impregnation method

作　　者：崔燕[1] 唐致远[1] 薛建军 南俊民[3] 侯宪鲁 杨敏杰[3] 

机构地区：[1]天津大学化工学院,天津300072 [2]广州市鹏辉电池有限公司,广东广州511483 [3]华南师范大学化学系,广东广州510631

出　　处：《电池》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)

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%.

关 键 词：锂电池 熔盐浸渍法 锂锰氧化物 正极材料 

分 类 号：TM912.9[电气工程—电力电子与电力传动]