Title:
MANUFACTURE OF POSITIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP3185609
Kind Code:
B2
Abstract:
PURPOSE: To provide positive electrode active material which has a crystal structure of a single phase, has no turbulence in the crystal structure, and is excellent in a cycle characteristic by manufacturing a predetermined positive electrode active material composed of a composition, Li, Ni, and Al in a specified condition.
CONSTITUTION: An alkaline solution (for example, a sodium hydroxide solution) is added to a mixed aqueous solution of Al salt (for example, aluminum sulfate) and Ni salt (for example, Nickel sulfate) so as to coprecipitate hydroxides of Ni and Al to produce a composite hydroxide. Thereafter, the same is mixed with a Li compound (for example, lithium hydroxide), and this mixture is preferably burnt at 600 to 800°C so as to manufacture a positive electrode active material which is composed of a composition, Li, Ni, and Al, and is expressed by a formula LiNixAl(1-x)O2 ((x) is 0.70 to 0.95).
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Inventors:
Junichi Yamaura
Kazuhiro Okamura
Yoshiaki Nitta
Kazuhiro Okamura
Yoshiaki Nitta
Application Number:
JP14326395A
Publication Date:
July 11, 2001
Filing Date:
June 09, 1995
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H01M10/05; H01M4/485; H01M4/525; (IPC1-7): H01M4/58; H01M10/40
Domestic Patent References:
| JP5290845A | ||||
| JP1294364A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)
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