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:
May. 23, 2023
Filed:
Sep. 20, 2019
Applicants:
Panasonic Corporation, Kadoma, JP;
Sanyo Electric Co., Ltd., Daito, JP;
Inventors:
Miki Mizawa, Hyogo, JP;
Kaoru Nagata, Osaka, JP;
Masanori Maekawa, Osaka, JP;
Masahiro Kinoshita, Osaka, JP;
Assignees:
PANASONIC HOLDINGS CORPORATION, Osaka, JP;
SANYO Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/00 (2006.01); H01M 4/485 (2010.01); H01M 4/36 (2006.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 4/485 (2013.01); H01M 4/366 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01);
Abstract
This cathode active material for a secondary battery using a non-aqueous electrolyte includes nickel-rich lithium transition-metal oxide, exhibits a hard X-ray photoelectron spectroscopy (HAXPES) peak of 1,560 to 1,565 eV in binding energy from an Al-rich layer, using a photon energy of 6 KeV, and with respect to the mean particle diameter r of the lithium transition-metal oxide particle, the Al concentration is approximately constant within 0.35r of the center.