纳米Co(OH)_2的制备与电化学性能的研究  

Study on Preparation of Nano-Co(OH)_2 and Electric Chemical Function

作　　者：杨云霞[1] 章健康[1] 张蕾[1] 陈玮[2] 

机构地区：[1]华东理工大学化学系,上海200237 [2]华东理工大学教育部超细材料制备与应用重点实验室,上海200237

出　　处：《功能材料》2001年第1期57-58,共2页Journal of Functional Materials

摘　　要：采用湿化学法合成了纳米Co(OH) 2 。并运用XRD、TEM等方法对反应产物进行了观察分析 ,结果表明得到的为六方片状的 β -Co(OH) 2 ,粒径在 2 0～ 40nm之间。将该纳米 β -Co(OH ) 2 添加到镍正极中 ,电池测试结果表明 ,纳米 β -Co(OH) 2 在电解质溶液中具有高的反应活性 ,能均匀地分散在镍正极中。与金属钴相比 ,能显著地提高镍电极中活性物质Ni(OH) 2 的利用率。In this work,nano-Co(OH) 2 powder was synthesized by a simple wet chemical route. The precipitates to which CoSO 4 reacted with NaOH in the presence of NH 3H 2O complexing agent were confirmed to be hexagonal flake β-Co(OH) 2 with size 20～40nm by XRD and TEM. When this nano-Co(OH) 2 was added to a nickel positive electrode, the results of a cell testing showed that nano-Co(OH) 2 had high reactive activity in the electrolyte solution and might disperse in nickel positive electrode.Compared with metal cobalt, nano-Co(OH) 2 can more remarkably improve utilization of Ni(OH) 2 in the nickel positive electrode.

关 键 词：CO(OH)2 纳米粉末 镍电极 化学合成 电化学性质 

分 类 号：TM912.1[电气工程—电力电子与电力传动] TB383[一般工业技术—材料科学与工程]