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. 21, 2024
Filed:
Jun. 04, 2019
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Abstract
The purpose of the present disclosure is to provide a non-aqueous secondary battery that is able to suppress a decrease in charge-discharge cycle characteristics. The non-aqueous electrolyte secondary battery that is a mode of the present disclosure comprises a negative electrode having a negative electrode active material layer, wherein the negative electrode active material layer contains a negative electrode active material that contains graphite particles, and an SBR component selected from at least one of a styrene-butadiene copolymer rubber and a modified product thereof, the internal porosity of the graphite particles is 1% to 5%, the porosity due to voids between particles of the negative electrode active material layer is 10% to 20%, and the content of the SBR component is 1.5 mass % to 3 mass % with respect to the mass of the negative electrode active material.