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:
Apr. 23, 2019
Filed:
Feb. 25, 2015
Applicant:
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Inventors:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 1/00 (2006.01); B22F 3/02 (2006.01); B22F 7/04 (2006.01); B22F 7/08 (2006.01); B22F 9/00 (2006.01); B22F 9/04 (2006.01); B22F 9/08 (2006.01); C22C 1/04 (2006.01); C22C 9/00 (2006.01); C22C 9/01 (2006.01); C22C 9/02 (2006.01); C22C 9/04 (2006.01); C22C 9/06 (2006.01); C22C 9/10 (2006.01); H01M 4/02 (2006.01); H01M 4/38 (2006.01); B32B 15/00 (2006.01); C22C 30/06 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/38 (2013.01); B22F 7/08 (2013.01); B32B 15/00 (2013.01); C22C 9/00 (2013.01); C22C 9/01 (2013.01); C22C 9/02 (2013.01); C22C 9/04 (2013.01); C22C 9/06 (2013.01); C22C 9/10 (2013.01); C22C 30/06 (2013.01); B22F 2998/00 (2013.01); B22F 2998/10 (2013.01); C22C 1/0425 (2013.01); H01M 4/387 (2013.01); H01M 10/052 (2013.01); H01M 2004/027 (2013.01);
Abstract
Provided is a negative electrode active material that can improve the discharge capacity per volume and charge-discharge cycle characteristics. The negative electrode active material according to the present embodiment contains an alloy phase. The alloy phase undergoes thermoelastic diffusionless transformation when releasing metal ions or occluding metal ions. The oxygen content of the negative electrode active material is not more than 5000 ppm in mass.