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:
Jan. 07, 2020
Filed:
Aug. 14, 2017
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Masato Hozumi, Mishima, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
Provided in the present disclosure is a method for producing a composite cathode active material with low reaction resistance. The method comprises: a coating step of, with a Li ion conductive oxide, coating a cathode active material that is a spinel type oxide including at least a Mn having a valence of +4 to obtain a coated cathode active material; and a heat treating step of heat treating the coated cathode active material to obtain a composite cathode active material; wherein a valence of the Mn in the cathode active material is lower than a valence of the Mn in the cathode active material before coating, and a valence of the Mn is increased by the heat treating.