NON-AQUEOUS SECONDARY CELL

Title:

NON-AQUEOUS SECONDARY CELL

Document Type and Number:

WIPO Patent Application WO/2016/129629

Kind Code:

A1

Abstract:

Provided is a non-aqueous secondary cell having excellent load characteristics, continuous charging characteristics, and charge/discharge cycle characteristics under high temperatures. This non-aqueous secondary cell is characterized in having a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte; a positive electrode material in which the surfaces of positive electrode active material particles are coated with an Al-containing oxide being used in the positive electrode; the average coating thickness of the Al-containing oxide being 5-50 nm; the positive electrode material containing at least a positive electrode material (a) having an average particle diameter of 1-40 μm and a positive electrode material (b) that has an average particle diameter of 1-40 μm, the average particle diameter being smaller than that of the positive electrode material (a); the positive electrode material having a specific surface area of 0.1-0.42/g; the positive electrode active material contained in the positive electrode material (a) and the positive electrode active material contained in the positive electrode material (b) both being lithium cobaltate having a specific composition; and the non-aqueous electrolyte containing a fluorine-containing lithium salt.

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Inventors:

SEKIYA TOMOHITO (JP)
OMOMO YOSHITOMO (JP)
YAMADA MASAYUKI (JP)

Application Number:

PCT/JP2016/053926

Publication Date:

August 18, 2016

Filing Date:

February 10, 2016

Export Citation:

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Assignee:

HITACHI MAXELL (JP)

International Classes:

H01M10/0568; H01M4/36; H01M4/525; H01M10/0567; H01M10/0569

Foreign References:

JP2007165299A	2007-06-28
JP2010129471A	2010-06-10