Title:
【発明の名称】非水リチウム二次電池用正極活物質の製造方法
Document Type and Number:
Japanese Patent JP3344815
Kind Code:
B2
Abstract:
PURPOSE:To provide a lithium secondary battery having high discharge capacity and a high filling characteristic by using a nickel compound in which a particle diame ter of a secondary particle is limited to a range of 5mum to 100mum, obtaining LiNiO2 powder, and using this as a positive electrode active material. CONSTITUTION:Lithium hydroxide LiOH and nickel hydroxide Ni(OH)2 having an average diameter of 20i m are weighed so as to become Li/Ni=1/1 in a mole ratio, and after these powders are thrown in the water, citric acid is added, and it is dried. Afterwards, heat treatment is performed in an oxygen air current, and powder having an average diameter of 1.6mum is obtained. This is used as a positive electrode active material, and after a conductive agent and a binding agent are added, and a positive electrode plate is obtained by pressurizing molding. This positive electrode plate is used as a positive electrode 4 of a test cell of a lithium secondary battery, on the one hand, in a negative electrode 7, a lithium metal plate is used as a negative electrode plate. Polypropylene is used as a separator 5. A separator fixing spacer is 6, and a negative electrode current collecting body is 8, and a cell fixing machine screw is 9, and an electrolyte injecting plug is 10, and a negative electrode lead wire is 11.
Inventors:
Akinobu Iikawa
Yuichi Ito
Kiyoshi Araki
Yukio Hiraoka
Norio Haga
Katsuaki Okabe
Yuichi Ito
Kiyoshi Araki
Yukio Hiraoka
Norio Haga
Katsuaki Okabe
Application Number:
JP5122094A
Publication Date:
November 18, 2002
Filing Date:
February 24, 1994
Export Citation:
Assignee:
DOWA MINING CO.,LTD.
International Classes:
H01M10/05; H01M4/525; (IPC1-7): H01M4/58; H01M10/40
Domestic Patent References:
| JP6163046A | ||||
| JP3257004A |
Attorney, Agent or Firm:
Masahiko Maruoka