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:
Aug. 13, 2019
Filed:
Aug. 27, 2013
Nippon Steel & Sumitomo Metal Corpoation, Tokyo, JP;
Sukeyoshi Yamamoto, Nishinomiya, JP;
Noriyuki Negi, Futtsu, JP;
Tatsuo Nagata, Ikeda, JP;
Koji Moriguchi, Nishinomiya, JP;
Mitsuharu Yonemura, Takarazuka, JP;
Tomoyuki Kakeshita, Suita, JP;
Tomoyuki Terai, Suita, JP;
Takashi Fukuda, Kusatsu, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
Provided is a negative electrode active material that can improve the capacity per volume and charge-discharge cycle characteristics of a nonaqueous electrolyte secondary battery represented by a lithium ion secondary battery. The negative electrode active material according to the present embodiment contains an alloy phase. The alloy phase undergoes thermoelastic diffusionless transformation when releasing or occluding metal ions. The negative electrode active material of the present embodiment is used in a nonaqueous electrolyte secondary battery. Thermoelastic diffusionless transformation refers to so-called thermoelastic martensitic transformation.