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. 03, 2026
Filed:
Sep. 09, 2021
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Yuta Kuroda, Osaka, JP;
Tatsuro Sasa, Kyoto, JP;
Abstract
This negative electrode for a secondary battery includes a negative electrode mixture layer that includes: a negative electrode active material containing graphite particles and a Si-containing material; and a binder. The Si-containing material includes a Si-containing material A that includes a carbon phase and silicon particles dispersed in the carbon phase. The graphite particles include graphite particles A with 5% or less particle internal porosity, and the content of the graphite particles A is at least 10% by mass with respect to the total mass of the negative electrode active material. The content of the Si-containing material A is at least 1% by mass with respect to the total mass of the negative electrode active material.