针形纳米氢氧化镍的制备及其对镍氢电池性能的影响  

Synthesis of Needle-like Nanosized Ni(OH)_2 and the Electrochemical Performance of its Composite Electrodes

作　　者：黄亮国[1] 王磊娟[2] 胡祥敏[1] 

机构地区：[1]广东科学技术职业学院机械与电子工程学院,广东珠海519090 [2]珠海城市职业技术学院,广东珠海519090

出　　处：《科技信息》2011年第21期5-7,共3页Science & Technology Information

基　　金：广州市科技计划(No.2008J1-C161);广东省科技计划(No.2006B14701019)资助项目

摘　　要：以吐温-80为分散剂,在超声波容器中采用沉淀法制备出了氢氧化镍。研究了反应体系在不同PH值下对粉体密度的影响,用XRD和TEM对样品进行了表征,将制得的纳米氢氧化镍与市售微米级球镍以6%的比例混合制成模拟电极并测试其电化学性能,结果表明所制备的材料为纳米级β-Ni(OH)2,微观形貌为针形,且复合模拟电极的放电容量达到256.7 mAh/g,比纯球镍电极提高11%。With Tween-80 （C64H124026-80） as dispersant, Nickel hydroxide was prepared by precipitation method （powder S1）and supersonic precipitation method （powder $2） . The samples were characterized （through） using XRD and TEM.The prepared powder was added ＇into micron-scale spheroshape nickel hydroxide at a ratio of 6% to get a combination electrode. The result showedthat the sample is β- type Ni （OH） 2 and its mircoshape is needle-like. When mixing the 6% nanosized Ni （OH）2 and spherical Ni （OH） 2, The electrochemical studies revealed that when the nanopowder was mixed with pure spheroshape Ni （OH）2 at a ratio of 6%. The capacity was 11% higher than that of the pure spheroshape Ni（OH）2 （230.7 mAh/g）.

关 键 词：压实密度 针形 纳米氢氧化镍 PH值 复合电极 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]