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. 29, 2019
Filed:
Feb. 24, 2015
Toda Kogyo Corp., Hiroshima-shi, Hiroshima-ken, JP;
Denka Company Limited, Tokyo, JP;
Akihisa Kajiyama, Sanyo Onoda, JP;
Teruaki Santoki, Sanyo Onoda, JP;
Daisuke Morita, Sanyo Onoda, JP;
Ryuta Masaki, Sanyo Onoda, JP;
Takahiko Sugihara, Sanyo Onoda, JP;
Tsuyoshi Wakiyama, Sanyo Onoda, JP;
Kazutoshi Matsumoto, Sanyo Onoda, JP;
Akira Yoda, Machida, JP;
Taro Inada, Tokyo, JP;
Hiroshi Yokota, Machida, JP;
Takashi Kawasaki, Machida, JP;
TODA KOGYO CORPORATION, Hiroshima, JP;
DENKA COMPANY LIMITED, Tokyo, JP;
Abstract
An object of the present invention is to provide a positive electrode mixture capable of conducting stable charging and discharging with a less amount of gasses generated which has an operating voltage or an initial crystal phase transition voltage of not less than 4.5 V on the basis of lithium. The present invention relates to a positive electrode mixture comprising carbon black having a bulk density of not more than 0.1 g/cm, a crystallite size of 10 to 40 Å, an iodine adsorption of 1 to 150 mg/g, a volatile content of not more than 0.1% and a metal impurity content of not more than 20 ppm, and a positive electrode active substance having an operating voltage or an initial crystal phase transition voltage of not less than 4.5 V on the basis of lithium.