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:
May. 20, 2014
Filed:
Apr. 12, 2011
Junichi Niwa, Kariya, JP;
Kazuaki Hokano, Kariya, JP;
Masataka Nakanishi, Kariya, JP;
Akira Kojima, Kariya, JP;
Kazuhito Kawasumi, Kariya, JP;
Takuhiro Miyuki, Ikeda, JP;
Tetsuo Sakai, Ikeda, JP;
Junichi Niwa, Kariya, JP;
Kazuaki Hokano, Kariya, JP;
Masataka Nakanishi, Kariya, JP;
Akira Kojima, Kariya, JP;
Kazuhito Kawasumi, Kariya, JP;
Takuhiro Miyuki, Ikeda, JP;
Tetsuo Sakai, Ikeda, JP;
Kabushiki Kaisha Toyota Jidoshokki, Aichi, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Abstract
To provide a sulfur-system positive electrode for lithium-ion battery, sulfur-system positive electrode which is good in the cyclability and the other characteristics, and a lithium-ion secondary battery including that positive electrode. In a positive electrode for lithium-ion secondary battery, the positive electrode having: a current collector; and an electrode layer that is formed on a surface of the current collector, and which includes a binder resin, an active material and a conductive additive, the positive electrode is characterized in that the active material includes a sulfur-modified polyacrylonitrile that is produced by heating a raw-material powder including a sulfur powder and a polyacrylonitrile powder in an enclosed nonoxidizing atmosphere; and the binder resin includes a polyimide resin and/or a polyamide-imide resin.