MH/Ni电池中高活性材料Ni(OH)_2的制备  

Preparation of High Activity Nickel Hydroxide Material of MH/Ni Secondary Battery

作　　者：袁高清[1] 葛华才[1] 范祥清[1] 王世平[1] 

机构地区：[1]华南理工大学应用化学系,广东510641

出　　处：《电池》1998年第3期105-107,共3页Battery Bimonthly

基　　金：国家自然科学基金;广东省自然科学基金的部分资助

摘　　要：本文采用络合物—缓冲溶液新方法制备了具有高活性和高堆积密度的Ni(OH)_2正极材料。通过大量的实验研究,确定了合成Ni(OH)_2的最佳工艺条件。利用此法所制备Ni(OH)_2的比容量达273mAh/g,堆积密度1.9～2.0g/cm^3。X射线衍射(XRD)和扫描电镜(SEM)测试结果表明,其晶形为β型,晶体化程度高,显微形貌为球形。热分析(TG、DTA)结果表明,自制的Ni(OH)_2热稳定性较好。Some nickel hydroxide powders through a new kind of coordination - buffer solution method were prepared. The optimum technique conditions of preparation of nickel hydroxides were as follows; reaction temperature 30℃-70℃,pH 10.5-11.6,concentration of nickel sulphate 1~3 mol/L. The capacity and bulk density of Ni(OH)2 powder prepared by this method were 273 mAh/g and 1.9-2.0g/cm3,respectively. The image of scanning electron microscopy(SEM)and X-ray diffraction (XRD)pattern showed it's ball-alike shaped β-Ni(OH)2. The result of thermoanalysis (TG.DTA) showed its better thermal stability.

关 键 词：氢氧化镍 MH/NI电池 镉镍电池 

分 类 号：TM911.14[电气工程—电力电子与电力传动]