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Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERIES, AND LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/043671
Kind Code:
A1
Abstract:
The present invention relates to a positive electrode active material for lithium secondary batteries, which contains a lithium metal composite oxide powder represented by general formula (1). The lithium metal composite oxide is configured from primary particles and secondary particles, in each of which a plurality of the primary particles aggregate. This positive electrode active material for lithium secondary batteries has a BET specific surface area of from 1 m2/g to 3 m2/g (inclusive); and the secondary particles have an average breaking strength of from 10 MPa to 100 MPa (inclusive). Li[Lix(Ni(1-y-z-w)CoyMnzMw)1-x]O2 (1) (In the formula, M represents one or more metal elements selected from the group consisting of Fe, Cu, Ti, Mg, Al, W, B, Mo, Nb, Zn, Sn, Zr, Ga and V; -0.1 ≤ x ≤ 0.2; 0 < y ≤ 0.4; 0 < z ≤ 0.4; 0 ≤ w ≤ 0.1; and 0.25 < y + z + w.)

Inventors:
IMANARI Yuichiro (5-10 Aza-Sunahamawari, 45, Shirakata-cho, Fukui-sh, Fukui 31, 〒9103131, JP)
MATSUMOTO Kayo (5-10 Aza-Sunahamawari, 45, Shirakata-cho, Fukui-sh, Fukui 31, 〒9103131, JP)
IIDA Yasutaka (5-10 Aza-Sunahamawari, 45, Shirakata-cho, Fukui-sh, Fukui 31, 〒9103131, JP)
Application Number:
JP2017/031443
Publication Date:
March 08, 2018
Filing Date:
August 31, 2017
Export Citation:
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Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED (27-1, Shinkawa 2-chome Chuo-k, Tokyo 60, 〒1048260, JP)
TANAKA CHEMICAL CORPORATION (5-10, Aza-Sunahamawari 45, Shirakata-cho, Fukui-sh, Fukui 31, 〒9103131, JP)
International Classes:
H01M4/525; H01M4/505
Attorney, Agent or Firm:
TANAI Sumio et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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