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:
Mar. 24, 2026
Filed:
Dec. 17, 2020
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Yoshinori Satou, Osaka Fu, JP;
Shuhei Uchida, Osaka Fu, JP;
Yuichi Miyoshi, Osaka Fu, JP;
Nobuhiko Hojo, Osaka Fu, JP;
Abstract
An electrochemical element includes a current collector, and an active material layer on the current collector, wherein the active material layer includes active material particles each including lithium silicate composite particles with a lithium silicate phase and silicon particles dispersed therein, and a first coating covering at least a portion of a surface of the lithium silicate composite particles, the first coating includes an oxide of a first element other than a non-metal element, the active material layer has a thickness TA, and T>T, where Tis a thickness of the first coating covering the lithium silicate composite particles at a position of 0.25TA from the surface of the current collector in the active material layer, and Tis a thickness of the first coating covering the lithium silicate composite particles at a position of 0.75TA from the surface of the current collector in the active material layer.