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. 26, 2019
Filed:
Sep. 02, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Hideyuki Saka, Toyota, JP;
Keiichi Takahashi, Nishinomiya, JP;
Hideaki Fujita, Kyotanabe, JP;
Tatsuya Hashimoto, Osaka, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Abstract
A positive electrode mixture layer () includes a first layer () that has a main surface MS and a second layer () formed closer to the positive electrode current collector () side than the first layer (). A ratio of the volume of the first layer () to the volume of the positive electrode mixture layer () is 20 to 75 vol %. The first layer () contains lithium iron phosphate (LFP) () and lithium nickel cobalt manganese composite oxide (NCM) (). A ratio of the mass of the LFP () to the total mass of the LFP () and the NCM () in the first layer () is more than 0 and 80 mass % or less. The second layer () contains NCM (). A ratio of the mass of the LFP () to the total mass of the positive electrode active material in the positive electrode mixture layer () is 7.5 to 20 mass %. A maximum pore size of the first layer () is 0.50 to 0.70 μm.