CARBON MATERIAL FOR LITHIUM SECONDARY BATTERY ELECTRODE AND ITS MANUFACTURE, AND LITHIUM SECONDARY BATTERY

Title:

CARBON MATERIAL FOR LITHIUM SECONDARY BATTERY ELECTRODE AND ITS MANUFACTURE, AND LITHIUM SECONDARY BATTERY

Document Type and Number:

Japanese Patent JP2000182617

Kind Code:

A

Abstract:

To provide a lithium secondary battery and a carbon material for a lithium secondary battery electrode having a flat discharging potential, high charge/discharge efficiency at an initial period, excellent cycle characteristics, high capacity and excellent coating capability.

A carbon material for a lithium secondary battery electrode is carbon powder prepared by carbonizing and graphitizing natural graphite, kish graphite or a mixture thereof together with pitch, resin or a mixture thereof, and its properties are d(002)≤0.337 nm, Lc≥30 nm, La≥30 nm, 2 or less for an aspect ratio by X-ray diffraction analysis and 5 m2/g or less for a specific surface area by N2-BET analysis.

Inventors:

NAGOSHI MASAYASU
MIYAZAWA KUNIO
NODA TAKESHI
SATO KAORU
KONDO TAKAAKI

Application Number:

JP35744398A

Publication Date:

June 30, 2000

Filing Date:

December 16, 1998

Export Citation:

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Assignee:

NIPPON KOKAN KK

International Classes:

C01B31/02; H01M4/587; H01M10/05; (IPC1-7): H01M4/58; C01B31/02; H01M4/02; H01M10/40

Attorney, Agent or Firm:

Yasuo Ishikawa

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