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Title:
LITHIUM-CONTAINING METAL OXIDE, 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/2019/182153
Kind Code:
A1
Abstract:
A lithium-containing metal oxide containing secondary particles each composed of an aggregate of primary particles, wherein, when a cross-sectional image of each of the secondary particles is obtained and the cross-sectional image is observed, the abundance of reference primary particles in a center part of the secondary particle is 20 to 50% inclusive and the abundance of the reference primary particles in a surface part of the secondary particle is 30 to 100% inclusive.

Inventors:
NAGAO Daisuke (LIMITED 5-1, Sobiraki-cho, Niihama-sh, Ehime 21, 〒7928521, JP)
KAGEURA Jun-ichi (LIMITED 5-1, Sobiraki-cho, Niihama-sh, Ehime 21, 〒7928521, JP)
MAEDA Yusuke (5-10 Aza-Sunahamawari, 45, Shirakata-cho, Fukui-sh, Fukui 31, 〒9103131, JP)
Application Number:
JP2019/012264
Publication Date:
September 26, 2019
Filing Date:
March 22, 2019
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:
C01G53/00; H01M4/505; H01M4/525
Domestic Patent References:
WO2016002158A12016-01-07
WO2018020845A12018-02-01
WO2006118279A12006-11-09
WO2016175597A12016-11-03
Foreign References:
JP2018506156A2018-03-01
JP2017533568A2017-11-09
US20140158932A12014-06-12
Attorney, Agent or Firm:
TANAI Sumio et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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