Al取代α-Ni(OH)_2的有机溶剂法合成及其电化学性能  

Synthesis of Al-substituted alpha-nickel hydroxide in organic solvent and its electrochemical performance

作　　者：肖慧明[1] 王建明[1] 陈惠[1] 潘滔[1] 张鉴清[1] 

机构地区：[1]浙江大学化学系

出　　处：《功能材料》2003年第5期553-555,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(59902004)

摘　　要：　采用化学共沉淀法,在醇水溶剂体系中合成了Al取代的α Ni(OH)2。应用AAS、ICP AES技术测定了样品中元素Ni和Al的含量,并运用XRD、FTIR和TG DSC等现代分析手段,对其结构进行了表征。所得产品的密度为1.68g·cm-3,放电中点电位为370mV,电化学比容量达303mA·h·g-1。经372个大电流充放电循环,样品的电化学容量循环衰减率仅为9.6%。Alsubstituted alphanickel hydroxide was synthesized through chemical coprecipitation method in organic solvent. Using AAS and ICPAES technique, Ni and Al contents were measured. The structure was investigated by means of XRD, FTIR and TGDSC. The experimental results show that the product prepared by this method has better electrochemical performance, with discharge mediate potential 370mV, and electrochemical specific capacity 303mAh·g-1. Tapping density was 1.68g·cm-3. The sample exhibits the cyclelife behavior with deterioration rate 9.6% during 372 galvanostatic chargedischarge cycles.

关 键 词：合成 有机溶剂 电化学性能 化学共沉淀 结构 碱性可充电池 Α-NI(OH)2 

分 类 号：TM912.2[电气工程—电力电子与电力传动]