纳米β-Ni(OH)_2复合LiOH和Co(OH)_2的电化学性能  

Electrochemical performance of nano β-Ni(OH)_2compound with LiOH and Co(OH)_2

作　　者：钟胜奎[1] 刘长久[1] 柴小琴[1] 

机构地区：[1]桂林工学院材料与化学工程系,广西桂林541004

出　　处：《电池》2004年第1期41-43,共3页Battery Bimonthly

基　　金：广西自然科学基金资助项目(0007019)

摘　　要：一定温度下,用NiC2O4·2H2O和NaOH进行固相反应,制备出纳米级β Ni(OH)2粉末。样品按一定比例掺杂LiOH和Co(OH)2制备复合电极,讨论LiOH和Co(OH)2含量对掺杂复合电极电化学性能的影响。结果表明:β Ni(OH)2纳米粉体加入含量10%的LiOH、10%的Co(OH)2和5%的镍粉、5%的乙炔黑,并以泡沫镍为集流体在6MPa压力下压制出镍正极材料,其结构稳定。电极以380mA/g电流充电,76mA/g放电,终止电压为0 6V时,比容量达280mAh/g,放电电位平稳,活性明显增强。NiC_2O_4·2H_2O was used to react with NaOH in the solid reaction to get nano β-Ni(OH)_2. Certain content of Co(OH)_2 and LiOH were added to manufacture adulterated electrodes. The effects of the adulterating content of Co(OH)_2 and LiOH on the electrochemical performance were discussed. The results showed that the best press to manufacture adulterated electrode was (6?MPa) and the content of Co(OH)_2 and LiOH was 10%,nickel powder was 5% and acetylene black 5% when the charging current was 380?mA/g,the discharging current was (76?mA/g),and the end potential was 0.6?V,the specific capacity was 280?mAh/g,the discharge potential was smooth and the (activity) was obviously enhanced.

关 键 词：镍电极材料 电化学性能 纳米β-Ni(OH)2 LiOH CO(OH)2 复合电极 

分 类 号：TB383[一般工业技术—材料科学与工程]