POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM-ION SECONDARY CELL, AND LITHIUM-ION SECONDARY CELL

Title:

POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM-ION SECONDARY CELL, AND LITHIUM-ION SECONDARY CELL

Document Type and Number:

WIPO Patent Application WO/2019/172193

Kind Code:

A1

Abstract:

The present invention provides: a positive electrode active material for a lithium-ion secondary cell, the positive electrode active material having a high charge/discharge capacity, excellent charge/discharge cycle characteristics and output characteristics, and exceptional producibility; and a lithium-ion secondary cell in which the positive electrode active material is used. A positive electrode active material for a lithium-ion secondary cell, the positive electrode active material containing a lithium-transition metal composite oxide represented by composition formula (1): Li1+aNibCocMndMeO2+α [in composition formula (1), M represents one or more metal elements other than Li, Ni, Co, and Mn, and the following relationships are satisfied: -0.04 ≤ a ≤ 0.04, 0.80 ≤ b < 1.00, 0 ≤ c ≤ 0.04, 0 < d < 0.20, b + c + d + e = 1, and -0.2 <α < 0.2], wherein in composition formula (1), the relationship c/d ≤ 0.75 is satisfied.

Inventors:

TOYAMA TATSUYA (JP)
TAKAHASHI SHIN (JP)
TOKORO HISATO (JP)
NAKAJIMA GENEI (JP)
TAKANO SHUICHI (JP)
GUNJI AKIRA (JP)
NOIE AKIHIKO (JP)

Application Number:

PCT/JP2019/008444

Publication Date:

September 12, 2019

Filing Date:

March 04, 2019

Export Citation:

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Assignee:

HITACHI METALS LTD (JP)

International Classes:

H01M4/525; C01G53/00; H01M4/505

Domestic Patent References:

WO2010147179A1	2010-12-23
WO2016103511A1	2016-06-30
WO2011108598A1	2011-09-09

Foreign References:

JP2003017049A	2003-01-17
JPH08171910A	1996-07-02
JPH05283076A	1993-10-29
JP2001110419A	2001-04-20
JPH0696768A	1994-04-08
JP2016122546A	2016-07-07
JP2011082150A	2011-04-21
JP2004335152A	2004-11-25

Other References: