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Title:
ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, ELECTRODE FOR LITHIUM ION SECONDARY BATTERY INCLUDING THE SAME, AND LITHIUM ION SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2014149989
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an active material for a lithium ion secondary battery, with which a lithium ion secondary battery having excellent charge/discharge capacity and excellent cycle characteristics can be obtained, and a lithium ion secondary battery including the active material.SOLUTION: An active material for a lithium ion secondary battery includes an active material body and a coat layer formed on the surface of the active material body. The coat layer comprises a resin having a binding function, and has a film thickness of 1 nm or more and 50 nm or less. When the total surface area of the active material body is 100%, the percentage of an area occupied by the coat layer is 70% or more.

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Inventors:
SAEKI AKIHIRO
MATSUSHIRO MASARU
Application Number:
JP2013018573A
Publication Date:
August 21, 2014
Filing Date:
February 01, 2013
Export Citation:
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Assignee:
TOYOTA IND CORP
International Classes:
H01M4/62; H01M4/131; H01M4/36; H01M4/505; H01M4/525
Domestic Patent References:
JP2000281354A2000-10-10
JP2010129494A2010-06-10
JP2000260434A2000-09-22
JP2006127932A2006-05-18
JP2000264636A2000-09-26
Foreign References:
WO2004012286A12004-02-05
Attorney, Agent or Firm:
Patent business corporation Joint establishment



 
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