EVALUATION METHOD OF CARBON MATERIAL FOR NEGATIVE ELECTRODE AND HIGH EFFICIENCY NEGATIVE ELECTRODE MATERIAL

Title:

EVALUATION METHOD OF CARBON MATERIAL FOR NEGATIVE ELECTRODE AND HIGH EFFICIENCY NEGATIVE ELECTRODE MATERIAL

Document Type and Number:

Japanese Patent JP2002025554

Kind Code:

A

Abstract:

To provide an evaluation method from which a useful information about initial charging/discharging efficiency is acquired with a simple method.

Amount of average gaps Δx of each layer is acquired from a specific algebraic expression using a crystal lattice constant a0 and c0, and a surface to layer distance d112 obtained from X-ray diffraction of a carbon material.

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Inventors:

SAKAMOTO HITOSHI
SUGANO KOICHI
TSURUYA HIROTAKA
TAKAHASHI YUZURU

Application Number:

JP2000201207A

Publication Date:

January 25, 2002

Filing Date:

July 03, 2000

Export Citation:

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Assignee:

MITSUBISHI GAS CHEMICAL CO

International Classes:

H01M4/587; (IPC1-7): H01M4/58; H01M4/02

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