POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD OF MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY

Title:

Document Type and Number:

Japanese Patent JP2012099482

Kind Code:

A

Abstract:

To provide: a positive electrode active material for a lithium secondary battery, capable of maintaining main characteristics of a secondary battery even at a high voltage; a method of manufacturing a positive electrode active material for a lithium secondary battery; a positive electrode for a lithium secondary battery; and a lithium secondary battery.

A positive electrode active material for a lithium secondary battery according to the present invention includes: a core comprising a compound that can reversibly intercalate and deintercalate lithium; and a compound attached to the surface of the core and represented by the following chemical formula (1). In the following chemical formula (1), M(I) and M(II) are selected from the group consisting of Al, Zr, Hf, Ti, Ge, Sn, Cr, Nb, Ga, Fe, Sc, In, Y, La, Lu, and Mg, x satisfies 0<x≤0.7 and y satisfies 0≤y≤1. Li1+xM(I)xM(II)2-xSiyP3-yO12...(1)

Inventors:

LEE JOON-HYUNG
ANDRIY KVASHA
OLEG LEVIN

Application Number:

JP2011240725A

Publication Date:

May 24, 2012

Filing Date:

November 02, 2011

Export Citation:

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Assignee:

SAMSUNG SDI CO LTD

International Classes:

H01M4/36; C01G23/00; H01M4/505; H01M4/525

Domestic Patent References:

JP2008226463A	2008-09-25
JP2009064732A	2009-03-26
JP2008117542A	2008-05-22
JP2003173770A	2003-06-20

Foreign References:

WO2006018921A1	2006-02-23
WO2012001808A1	2012-01-05

Other References:

H.MORIMOTO, Y.SOMENO, Y.ARAI AND S.TOBISHIMA: ""Preparation of High Lithium Ion Conductive Glass-ceramics Solid Electrolytes in the LiTi2(PO4)3 Sys", KEY ENGINEERING MATERIALS, vol. 388, JPN6015024618, 2009, pages 77 - 80, XP008148696, ISSN: 0003099162

Attorney, Agent or Firm:

IPD International Patent Business Corporation

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