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:
Aug. 08, 2023
Filed:
Nov. 30, 2020
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Hiroto Asano, Nisshin, JP;
Shinsuke Matsuhara, Miyoshi, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A method of producing a lithium ion secondary battery disclosed here, includes a process of preparing an electrode body which includes a positive electrode and a negative electrode and in which the negative electrode contains a negative electrode material containing graphite having open pores and SiOdisposed in the open pores; a process of producing a battery assembly including the electrode body and a non-aqueous electrolytic solution containing LiPFwith a concentration of 1 mol/L or more; a process of initially charging the battery assembly; and a process of performing an aging treatment on the initially charged battery assembly in an environment of a temperature of 50° C. or higher.