NONAQUEOUS SECONDARY BATTERY CARBON ELECTRODE, ITS MANUFACTURE AND NONAQUEOUS SECONDARY BATTERY USING IT

Title:

NONAQUEOUS SECONDARY BATTERY CARBON ELECTRODE, ITS MANUFACTURE AND NONAQUEOUS SECONDARY BATTERY USING IT

Document Type and Number:

Japanese Patent JP3262704

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a nonaqueous secondary battery carbon electrode which has high capacity, a long life, and high safety by sintering graphite particles and carbon material having lower crystalline performance than the same on a metal collector having a catalytic action against carbon graphitization.
SOLUTION: On or under the intervention of a metal collector 15 having a catalytic action against carbon graphitization (for instance, foam nickel), graphite particles 16 (for instance, natural graphite and the like) and carbon material 17 having lower crystalline performance than the same (this precursor is tar or the like) are sintered to manufacture a carbon electrode for a nonaqueous secondary battery. The metal collector 15 is a three dimensional structure body, whose porocity is 60 to 95%, and is made of matrix-like metal wires of 20 to 200μm in thickness. In the particles 16, the average face spacing (d002) of a (002) face by means of an X-ray wide angle diffraction method is set to 0.335 to 0.340nm, the crystal element thickness (Lc) in a (002) face direction is set to 10nm or more, and the crystal element thickness (La) in a (110) face direction is set to 10nm or more. Thereby, the useful carbon electrode is obtained as the negative electrode of the nonaqueous secondary battery.

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Inventors:

Kazuo Yamada
Takehito Mitate
Naoto Nishimura
Tsukuda Yoshihiro
Tetsuya Yoneda

Application Number:

JP4496196A

Publication Date:

March 04, 2002

Filing Date:

March 01, 1996

Export Citation:

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Assignee:

Sharp Corporation

International Classes:

C01B31/04; H01M4/02; H01M4/04; H01M4/13; H01M4/133; H01M4/1393; H01M4/36; H01M4/58; H01M4/583; H01M4/587; H01M4/66; H01M4/80; H01M10/05; H01M10/0525; H01M10/36; (IPC1-7): H01M4/02; H01M4/04; H01M4/58; H01M4/66; H01M4/80; H01M10/40

Domestic Patent References:

JP6132027A
JP63245858A
JP887996A
JP8227714A

Attorney, Agent or Firm:

Shintaro Nogawa

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