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:
Dec. 16, 2025
Filed:
Dec. 17, 2020
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Shuhei Uchida, Osaka fu, JP;
Yoshinori Satou, Osaka fu, JP;
Abstract
An active material particle include a lithium silicate composite particle including a lithium silicate phase, and silicon particles dispersed in the lithium silicate phase, and a first coating that covers at least a portion of a surface of the lithium silicate composite particle; wherein the first coating includes an oxide of a first element other than a non-metal element, and a carbon atom, the first coating has a thickness T1, an element ratio Rb of the first element relative to the carbon atom at a position of 0.25T1of the first coating from the surface of the lithium silicate composite particle, and an element ratio Rt of the first element relative to the carbon atom at a position of 0.75T1of the first coating from the surface of the lithium silicate composite particle satisfy Rb>Rt.