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:
Sep. 22, 2026
Filed:
May. 16, 2023
Prime Planet Energy & Solutions, Inc., Tokyo, JP;
Yuki Morikawa, Kobe, JP;
Yurika Kojima, Kobe, JP;
Naoto Onodera, Kobe, JP;
Kouhei Tsuzuki, Kobe, JP;
Hideki Sano, Ikeda, JP;
PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo, JP;
Abstract
The herein disclosed negative electrode is a negative electrode for a nonaqueous electrolyte secondary battery that includes a current collector, and a negative electrode active material layer disposed on the current collector. The negative electrode active material layer includes a negative electrode active material and a binder, and a graphite particle and a Si-containing particle are included as the negative electrode active material. An average 10% yield strength of the graphite particle is equal to or less than 12 MPa. A BET specific surface area of the graphite particle is equal to or more than 0.5 m/g and not more than 3.5 m/g. A spring constant in a thickness direction of the negative electrode is equal to or less than 200 kN/mm. A 90° peel strength between the current collector and the negative electrode active material layer is equal to or more than 1.5 N/m.