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. 05, 2024
Filed:
Jul. 10, 2020
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Yuji Yamamoto, Toyota, JP;
Momoko Procter, Seto, JP;
Yoshinari Makimura, Nisshin, JP;
Tetsutaro Hayashi, Niihama, JP;
Willy Shun Kai Bong, Niihama, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
SUMITOMO METAL MINING CO., LTD., Tokyo, JP;
Abstract
A non-aqueous electrolyte secondary battery which is obtained using a lithium composite oxide having a layered structure and coated with a tungsten-containing compound in a positive electrode active substance, and which has a low initial resistance, and in which an increase in resistance following repeated charging and discharging is suppressed. The non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode and a non-aqueous electrolyte. The positive electrode includes a positive electrode active substance layer containing a lithium composite oxide having a layered structure. The lithium composite oxide includes a porous particle having a void ratio of not less than 20% but not more than 50%. The porous particle contains two or more voids having diameters that are at least 10% of the particle diameter of the porous particle. The surface of the porous particle is provided with a coating containing tungsten oxide and lithium tungstate.