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. 05, 2025
Filed:
Oct. 17, 2019
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Keita Okazaki, Osaka, JP;
Norihisa Yamamoto, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/58 (2010.01); H01M 4/02 (2006.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01);
U.S. Cl.
CPC ...
H01M 4/386 (2013.01); H01M 4/5825 (2013.01); H01M 4/623 (2013.01); H01M 2004/027 (2013.01);
Abstract
In the present invention, negative electrode active material particles for a nonaqueous electrolyte secondary battery which can suppress decrease of charging and discharging cycle characteristics, are each provided with: a composite particle that includes a silicate phase and silicon particles dispersed in the silicate phase; and a surface layer that covers the composite particle, wherein the surface layer includes a fluorine resin.