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:
Jun. 22, 2021
Filed:
Feb. 03, 2017
Sumitomo Chemical Company, Limited, Tokyo, JP;
Masahiko Tamura, Tokyo, JP;
Tomoo Kato, Tokyo, JP;
Takeshi Kawasato, Tokyo, JP;
Ryo Eguchi, Tokyo, JP;
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Abstract
To provide a lithium-containing composite oxide, a cathode active material and a positive electrode for a lithium ion secondary battery, with which a lithium ion secondary battery having favorable cycle characteristics even when charged at a high voltage can be obtained; and a lithium ion secondary battery having favorable cycle characteristics even when charged at a high voltage. A lithium-containing composite oxide which is represented by LiNiCoMnMOwherein M is Mg, Ca, Al, Ti, V, Nb, Mo, W or Zr, a+b+c+d+e=2, 'a' is from 1.01 to 1.10, b is from 0.30 to 0.95, c is from 0 to 0.35, d is from 0 to 0.35, and e is from 0 to 0.05, wherein in an X-ray diffraction pattern obtained by reflection X-ray diffraction employing Cu-Kα rays, the ratio (I/I) of the integrated intensity (I) of a peak of (104) plane to the integrated intensity (I) of a peak of (110) plane is at least 4.20.