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:
Feb. 07, 2017
Filed:
Mar. 30, 2012
Keitaro Otsuki, Tokyo, JP;
Atsushi Sano, Tokyo, JP;
Keitaro Otsuki, Tokyo, JP;
Atsushi Sano, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
An active material that can achieve sufficient discharge capacity at high discharging rate, an electrode including the active material, and a lithium ion secondary battery including the electrode, and a method for manufacturing the active material are provided. The active material includes a LiVOPOpowder, a first carbon powder, and a second carbon powder. A relational expression of 0.05≦A1/A2≦0.5 is satisfied, where A1 represents the ratio of the G band peak height observed around 1580 cmin Raman spectrum of the first carbon powder to the 2D band peak height observed around 2700 cmin the Raman spectrum of the first carbon powder, and A2 represents the ratio of the G band peak height observed around 1580 cmin Raman spectrum of the second carbon powder to the 2D band peak height observed around 2700 cmin the Raman spectrum of the second carbon powder.