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1. (WO2017150504) SPINEL-TYPE LITHIUM-MANGANESE-CONTAINING COMPLEX OXIDE

Pub. No.:    WO/2017/150504    International Application No.:    PCT/JP2017/007698
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Mar 01 00:59:59 CET 2017
IPC: H01M 4/505
C01G 53/00
H01M 4/36
H01M 4/525
Applicants: MITSUI MINING & SMELTING CO.,LTD.
三井金属鉱業株式会社
Inventors: YAMAGUCHI Kyohei
山口 恭平
MITSUMOTO Tetsuya
光本 徹也
MATSUSHIMA, Hideaki
松嶋 英明
KAGEI, Shinya
蔭井 慎也
Title: SPINEL-TYPE LITHIUM-MANGANESE-CONTAINING COMPLEX OXIDE
Abstract:
Provided is a spinel-type lithium-manganese-containing complex oxide that is related to a 5V-class spinel, and with which output characteristics and longevity characteristics can be improved while suppressing the production of gas. Proposed is a spinel-type lithium-manganese-containing complex oxide comprising at least Li, Mn, O, and at least two types of elements other than the above, and having an operating potential of at least 4.5 V with respect to a metal Li reference potential, wherein: D50 is from 0.5 µm to 9 µm; the value of (|mode diameter - D50|/mode diameter) × 100 is from 0 to 25%; the value of (|mode diameter - D10|/mode diameter) × 100 is from 20 to 58%; the ratio of the average primary particle diameter to said D50, as calculated from the average primary particle diameter calculated from a SEM image and said D50, is from 0.20 to 0.99; and the primary particles are polycrystalline.