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. 14, 2019
Filed:
Mar. 23, 2015
Applicant:
Sumitomo Osaka Cement Co., Ltd., Chiyoda-ku, Tokyo, JP;
Inventors:
Assignee:
SUMITOMO OSAKA CEMENT CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/00 (2006.01); H01M 4/136 (2010.01); H01M 4/58 (2010.01); H01M 4/62 (2006.01); H01M 4/02 (2006.01); H01M 4/36 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 4/136 (2013.01); H01M 4/5825 (2013.01); H01M 4/625 (2013.01); H01M 4/366 (2013.01); H01M 4/623 (2013.01); H01M 10/0525 (2013.01); H01M 2004/028 (2013.01); H01M 2220/10 (2013.01); H01M 2220/20 (2013.01); Y02E 60/122 (2013.01); Y02P 70/54 (2015.11);
Abstract
A cathode material including an aggregate formed by aggregating active material particles, in which the active material particle is a particle including a cathode active material as a formation material and a carbonaceous material is provided on a surface of the particle, a ratio between a weight ratio of carbon contained in the aggregate to a BET specific surface area of the cathode material is in a range of 0.08 to 0.2, a tap density is in a range of 0.9 g/cmto 1.5 g/cm, and an oil absorption amount for which N-methyl-2-pyrrolidone is used is 70 cc/100 g or less.