The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 2022
Filed:
Nov. 14, 2017
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Tanaka Chemical Corporation, Fukui, JP;
Nec Corporation, Tokyo, JP;
Mitsuharu Tabuchi, Osaka, JP;
Hideka Shibuya, Fukui, JP;
Takashi Ohtomo, Fukui, JP;
Noriyuki Tamura, Tokyo, JP;
Kaoru Narita, Tokyo, JP;
Ryota Yuge, Tokyo, JP;
Naoki Kawano, Tokyo, JP;
National Institute ot Advanced Industrial Science and Technology, Tokyo, JP;
Tanaka Chemical Corporation, Fukui, JP;
NEC Corporation, Tokyo, JP;
Abstract
A lithium-manganese composite oxide represented by formula (1): Li[(FeNi)Mn]O(1) wherein x, y, and z satisfy the following: 0<x≤⅓, 0≤y<1.0, and 0<z≤0.6, and wherein the content ratio of Li to the total content of Fe, Ni, and Mn (Li/(Fe+Ni+Mn)) is 1.55 or less on a molar ratio basis, the lithium-manganese composite oxide containing a crystalline phase having a layered rock-salt structure. This composite oxide is a novel material made from less resource-constrained and cheaper elements, and exhibits a high specific capacity, excellent charge-and-discharge cycle characteristics, and a high discharge capacity at a high current density (excellent rate characteristics), when used in the positive electrode material for lithium-ion secondary batteries.