Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY MANUFACTURED USING SAID POSITIVE ELECTRODE ACTIVE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2015/163273
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a positive electrode active material for a non-aqueous electrolyte secondary battery which can have both a high capacity and a high output. A positive electrode active material for a non-aqueous electrolyte secondary battery, said positive electrode active material being characterized by comprising primary particles of a lithium nickel composite oxide represented by general formula: LibNi1-x-yCoxMyO2 (wherein M represents at least one element selected from Mg, Al, Ca, Ti, V, Cr, Mn, Nb, Zr and Mo; b represents a numerical value satisfying the requirement represented by the formula 0.95 ≤ b ≤ 1.03; and x represents a numerical value satisfying the requirement represented by the formula 0 < x ≤ 0.15 and y represents a numerical value satisfying the requirement represented by the formula 0 < y ≤ 0.07, wherein the sum total of x and y is 0.16 or smaller, i.e., x+y ≤ 0.16) and secondary particles that are aggregates of the primary particles, wherein microparticles containing W and Li are present on the surface of each of the primary particles, and the length of axis-c of the lithium nickel composite oxide is 14.183 angstroms or more as determined by a Rietveld analysis of X-ray diffraction data on the oxide.
Inventors:
YOKOYAMA JUN (JP)
FURUICHI YUKI (JP)
NAKAYAMA TOMOKO (JP)
KOMUKAI TETSUFUMI (JP)
MORI KENSAKU (JP)
YAMAUCHI MITSURU (JP)
FURUICHI YUKI (JP)
NAKAYAMA TOMOKO (JP)
KOMUKAI TETSUFUMI (JP)
MORI KENSAKU (JP)
YAMAUCHI MITSURU (JP)
Application Number:
PCT/JP2015/061958
Publication Date:
October 29, 2015
Filing Date:
April 20, 2015
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
H01M4/525; H01M4/36; H01M4/505; C01G53/00
Foreign References:
| JP2008034369A | 2008-02-14 | |||
| JP2012079464A | 2012-04-19 | |||
| JP2013152866A | 2013-08-08 |
Other References:
See also references of EP 3136480A4
Attorney, Agent or Firm:
YAMAUCHI PATENT ATTORNEYS (JP)
Patent business corporation Yamauchi patent firm (JP)
Patent business corporation Yamauchi patent firm (JP)
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