Positive electrode composition for nonaqueous electrolyte secondary battery

A non-aqueous electrolyte and secondary battery technology, which is applied in the direction of non-aqueous electrolyte battery electrodes, secondary batteries, battery electrodes, etc., can solve the problems of undisclosed positive electrodes and lithium transition metal composite oxides, and achieve output characteristics and cycle Effects of property improvement and viscosity increase suppression
CN103456916AActive Publication Date: 2013-12-18NICHIA CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NICHIA CORP
Publication Date
2013-12-18

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Abstract

A cathode composition is provided to coexist high output and cycle properties in a non-aqueous electrolytic secondary battery and to enhance operability and yield in battery manufacturing by suppressing viscosity increase of cathode slurry. A cathode composition for non-aqueous electrolytic secondary batteries comprises lithium-transition metal composite oxide represented by LiaNi(1-x-y)CoxM1yWzM2wO2 and boron compound which includes boron element and oxygen element. In the chemical formula, 1.0<=a<=1.5, 0<=x<=0.5, 0<=y<=0.5, 0.002<=z<=0.03, 0<=w<=0.02, 0<=x+y<=0.7, M^1 is one or more selected from a group comprises of Mn and Al, and M2 is one or more selected from a group including Zr, Ti, Mg, Ta, Nb and Mo.
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Description

technical field

[0001] The present invention relates to a positive electrode composition for nonaqueous electrolyte secondary batteries such as lithium ion secondary batteries. In particular, the present invention relates to a positive electrode composition in which output characteristics of batteries are improved, cycle characteristics and viscosity stability of positive electrode slurry are also improved. Background technique

[0002] In recent years, mobile devices such as VTRs, mobile phones, and notebook computers have become increasingly popular and miniaturized, and non-aqueous electrolyte secondary batteries such as lithium-ion secondary batteries have been used as power sources. In addition, from the perspective of recent responses to environmental issues, batteries for electric vehicles and the like are also attracting attention.

[0003] As a positive electrode active material for lithium secondary batteries, LiCoO is generally widely used. 2 (Lithium cobaltate)...

Claims

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