Metal working – Method of mechanical manufacture – Electrical device making
Patent
1995-12-15
1997-05-06
Skapars, Anthony
Metal working
Method of mechanical manufacture
Electrical device making
423594, 429218, H01M 426
Patent
active
056266359
ABSTRACT:
A process for manufacturing lithium containing oxides represented by a formula LiNi.sub.x Co.sub.(1-x) O.sub.2, or a formula LiNi.sub.x Mn.sub.(1-x) O.sub.2, having almost single phase, through completely replacing a part of the Ni with Co or Mn. The single phase structure has the advantage that Li mobility in the crystal is high, the positive active materials having almost single phase show a large capacity and excellent cycle characteristics. According to the method, the positive active materials of lithium containing oxides are prepared by burning lithium compounds and composite hydroxides comprising Ni and Co, or Ni and Mn. The composite hydroxides are obtained through co-precipitation of nickel and cobalt hydroxides, or nickel and manganese hydroxides by adding caustic alkali aqueous solutions to mixed solutions containing nickel and cobalt salts or nickel and manganese salts.
REFERENCES:
patent: 4302518 (1981-11-01), Goodenough et al.
patent: 5135732 (1992-08-01), Barboux et al.
patent: 5370948 (1994-12-01), Hasegawa et al.
patent: 5490320 (1996-02-01), Hasegawa et al.
Nitta Yoshiaki
Okamura Kazuhiro
Yamaura Junichi
Matsushita Electric - Industrial Co., Ltd.
Skapars Anthony
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