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Title:
LITHIUM METAL COMPOSITE OXIDE POWDER, POSITIVE ELECTRODE ACTIVE SUBSTANCE FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE, AND LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/177014
Kind Code:
A1
Abstract:
This lithium metal composite oxide powder is constituted from: secondary particles which are aggregates of primary particles; and single particles that are present independently from the secondary particles. The lithium metal composite oxide is represented by compositional formula (I), and if the number of single particles independently present is denoted by a and the number of secondary particles is denoted by b, the value of [a/(a+b)] is such that 0.5 < [a/(a+b)] < 1.0. (Here: M is at least one type of metal element selected from the group consisting of Fe, Cu, Ti, Mg, Al, W, B, Mo, Nb, Zn, Sn, Zr, Ga, La and V; -0.1 ≤ x ≤ 0.2; 0 ≤ y ≤ 0.4; 0 ≤ z ≤ 0.4; and 0 ≤ w ≤ 0.1) Formula (I): Li[Lix(Ni(1-y-z-w)CoyMnzMw)1-x]O2

Inventors:
KURODA TOMOYA (JP)
Application Number:
JP2019/010241
Publication Date:
September 19, 2019
Filing Date:
March 13, 2019
Export Citation:
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Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
H01M4/525; C01G53/00; H01M4/505
Domestic Patent References:
WO2016129361A12016-08-18
Foreign References:
JP2017188445A2017-10-12
JP2017188443A2017-10-12
JP2012099470A2012-05-24
JP2012126633A2012-07-05
JP2015026455A2015-02-05
JP2018045953A2018-03-22
JP2004355824A2004-12-16
JP2002201028A2002-07-16
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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