Fabrication of High-Density Nickel Hydroxide Powder-I

고밀도 수산화니켈 분말의 제조에 관한 연구-I

  • 신동엽 (서울대학교 금속공학과) ;
  • 조원일 (한국과학기술연구원 화공연구부 전기화학연구팀) ;
  • 신치범 (아주대학교 화학공학과) ;
  • 조병원 (한국과학기술연구원 화공연구부 전기화학연구팀) ;
  • 강탁 (서울대학교 금속공학과) ;
  • 윤경석 (한국과학기술연구원 화공연구부 전기화학연구팀)
  • Published : 1995.04.01


To increase the capacity of positive electrode materials for matching the high capacity negative electrode materials in alkaline rechargeable batteries, high-density nickel hydroxide powders were made through a continuous process from nickel sulfate reacted with ammonia and sodium hydroxidc. The effect of operating conditions on structure, shape, size distribution, apparent density and tap density of powders were investigated. Crystal structure of nickel hydroxide powder was hcp according to Bravais Lattice. The increase of mean residence time promoted the growth of (101) plane. The shape of powder was nearly spherical. Their size was in the range of $2~50\mu\textrm{m}$. The size distribution of the powders prepared was narrower than that of commercially obtained nickel hydroxide. Apparent density and tap density were 1.6~1.7g/cc and 2.0~2.1g/cc, respectively.