LITHIUM CELL NEGATIVE ELECTRODE AND ITS MANUFACTURING METHOD

Title:

LITHIUM CELL NEGATIVE ELECTRODE AND ITS MANUFACTURING METHOD

Document Type and Number:

Japanese Patent JP2003036840

Kind Code:

A

Abstract:

To provide a negative electrode for a lithium cell and a manufacturing method for the same which has a high discharge capacity and is simply manufactured in much amount per hour, and of which a current collector of copper foil is firmly coated with an active substance such as tin and tin alloy.

The negative electrode has the current collector of copper foil of 8 to 70 μm, made by electrolysis or rolling, on one or both sides of which is hot-dip plated tin or a tin alloy comprising tin and one or more selected from silver, aluminum, silicon, bismuth, copper, nickel, cobalt, manganese, zinc, antimony and iron to form the active substance of 2 to 25 μm in thickness, wherein the copper of the current collector and the tin or tin alloy of the active substance dissolve in each other to form an alloy phase on the interface therebetween.

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Inventors:

KAJITA OSAMU
NISHIDA MOTONORI
YAMAMOTO KOICHI
TANIGAWA RYUICHI
ONISHI TOSHIKI
MASUOKA SACHIKO
YOSHINAGA HIROSHI
SAKAI TETSUO

Application Number:

JP2001321626A

Publication Date:

February 07, 2003

Filing Date:

October 19, 2001

Export Citation:

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Assignee:

FUKUDA METAL FOIL POWDER
NAT INST OF ADV IND & TECHNOL

International Classes:

H01M4/66; H01M4/134; H01M4/1395; H01M4/38; H01M10/05; (IPC1-7): H01M4/02; H01M4/04; H01M4/38; H01M4/66

Attorney, Agent or Firm:

Junichi Ando

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