LITHIUM ION SECONDARY BATTERY - MITSUBISHI CABLE IND LTD

Title:

LITHIUM ION SECONDARY BATTERY

Document Type and Number:

Japanese Patent JP2002063937

Kind Code:

A

Abstract:

To provide a lithium ion secondary battery in which low-temperature characteristics and rate characteristics are greatly improved than that of a conventional one.

A positive electrode has an active substance composed of Li-Co series complex oxide particles satisfying 7≤20/(specific surface area X average particle diameter)≤9, granular electroconductive materials having particle size of 3 μm or more, granular electroconductive materials having particle size of 2 7 μm or less, or fiber electroconductive materials having aspect ratio of 3 or more and fiber diameter of 2 μm or less. Then, a solid electrolyte layer having the main components consisting of salt, mutually soluble solvent, and fluorine polymer having vinylidene fluoride as the main unit are intervened between the positive electrode and the negative electrode.

Inventors:

ZUSHI TOSHIHIRO
OKADA SEIJI
MARUMOTO MITSUHIRO
GOSHO ITARU
MORIUCHI TAKESHI

Application Number:

JP2000247536A

Publication Date:

February 28, 2002

Filing Date:

August 17, 2000

Export Citation:

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Assignee:

MITSUBISHI CABLE IND LTD

International Classes:

H01M10/05; C01B31/02; H01M4/131; H01M4/133; H01M4/525; H01M4/62; H01M10/0525; H01M10/0565; H01M10/0587; (IPC1-7): H01M10/40; H01M4/02; H01M4/58; H01M4/62

Domestic Patent References:

JPH11176446A	1999-07-02
JPH1140140A	1999-02-12
JPH0684543A	1994-03-25
JPH05211070A	1993-08-20
JPH06325791A	1994-11-25
JPH11135119A	1999-05-21
JPH1186907A	1999-03-30
JPH11233143A	1999-08-27

Attorney, Agent or Firm:

Takashima Hajime

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