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化学学报
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化学学报 ›› 1998, Vol. 56 ›› Issue (6): 557-563. 上一篇    下一篇

研究论文

高堆积密度球形氢氧化镍制备及其理论分析

冷拥军;张鉴清;成少安;曹楚南   

  1. 浙江大学化学系
  • 发布日期:1998-06-15

Preparation and theoretical analysis of spherical nickel hydroxide with high tapping density

LENG YONGJUN;ZHANG JIANQING;CHENG SHAOAN;CAO CHUNAN   

  • Published:1998-06-15

PDF

812

被引次数

105

从分析决定Ni(OH)2沉淀时晶核形成速率大小的沉淀条件着手,从理论上讨论了镍盐溶液浓度及滴加速度、氨水浓度、pH值这些工艺因素对制备球形Ni(OH)2的影响。并在理论分析的指导下, 对这些工艺因素进行条件优化, 获得了最佳的沉淀条件, 并在此条件下制备出较高比容量(≥200mA.h/g)和堆积密度(≥1.95g/cm^3)球形Ni(OH)2。

关键词: 晶核, 浙江省自然科学基金, 氢氧化镍, 堆积密度

The effects on the preparation of spherical Ni(OH)2 of some important preparative conditions which determine nucleation rate such as concentration and adding rate of the reactant solution, concentration of aqueous ammonia, pH value of solution in the tank and reaction temperature were theoretically investigated. On the basis of theoretical analysis, spherical Ni(OH)2 with tapping density higher than 1.95g/cm^3, and electrochemical acitivity higher than 200mA.h/g were prepared under the optimum preparative conditions.

Key words: CRYSTAL NUCLEON, NICKELOUS HYDROXIDE, BULK DENSITY

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