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:
Jul. 31, 2018
Filed:
Apr. 23, 2015
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Widjaja Hardiyanto, Chiyoda-ku, JP;
Chikaya Tamitsuji, Chiyoda-ku, JP;
Naoki Yoshida, Chiyoda-ku, JP;
Sadatatsu Ikeda, Chiyoda-ku, JP;
SUMITOMO CHEMICAL CO., LTD., Tokyo, JP;
Abstract
To provide a cathode active material with which a lithium ion secondary battery having favorable cycle characteristics and having a high energy density even when discharged at a high voltage can be obtained; a cathode comprising the cathode active material; and a lithium ion secondary battery having the cathode. A cathode active material comprising a composite oxide (A) containing Li and at least one transition metal element selected from the group consisting of Ni, Co and Mn, and the following particles (B) and the following fluorinated carbon material (C) present on the surface of the composite oxide (A):