GRAPHITE FOR LITHIUM SECONDARY BATTERY CATHODE AND MANUFACTURE OF SAME

Title:

GRAPHITE FOR LITHIUM SECONDARY BATTERY CATHODE AND MANUFACTURE OF SAME

Document Type and Number:

Japanese Patent JP3683379

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide graphite for a lithium secondary battery cathode which can be stably manufactured, has a characteristic equal to natural graphite or more, has a short inter-layer distance and a large crystal size, and its manufacture.
SOLUTION: Products having a particle size more than 0.044 mm, are gathered from products which mainly contain graphite generated by a cooling process of molten pig iron of hypereutectic composition, then refined, further ground and screened, thus obtained flake graphite which contains C more than 99%, and has average particle size more than 0.005 mm, an inter-layer distance less than 3.37 &angst , crystal size more than 1000 &angst is used as graphite for lithium secondary battery cathode.

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Inventors:

Toshihiko Funabashi
Ryuji Uchimura

Application Number:

JP11635197A

Publication Date:

August 17, 2005

Filing Date:

April 18, 1997

Export Citation:

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Assignee:

JFE Mineral Co., Ltd.
Kawatetsu Techno Research Co., Ltd.

International Classes:

C01B31/04; H01M4/587; H01M10/05; (IPC1-7): H01M4/58; H01M4/02

Domestic Patent References:

JP5211070A
JP3050110A
JP63151609A

Attorney, Agent or Firm:

Daitaro Shiraki

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