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. 18, 2015
Filed:
Sep. 06, 2011
Kazuaki Takada, Fukushima, JP;
Hiroshi Inoue, Fukushima, JP;
Satoshi Mizutani, Fukushima, JP;
Kazuhiko Yoshida, Fukushima, JP;
Keitaro Matsui, Fukushima, JP;
Koichiro Hirata, Fukushima, JP;
Kazuaki Takada, Fukushima, JP;
Hiroshi Inoue, Fukushima, JP;
Satoshi Mizutani, Fukushima, JP;
Kazuhiko Yoshida, Fukushima, JP;
Keitaro Matsui, Fukushima, JP;
Koichiro Hirata, Fukushima, JP;
SONY CORPORATION, , JP;
Abstract
A secondary battery includes a cathode, an anode containing an anode active material, and an electrolytic solution. The anode active material contains tin, iron, cobalt, carbon, and titanium as an element. In the anode active material, a carbon content is from 9 mass % to 30 mass % both inclusive, a ratio of cobalt to total of iron and cobalt is from 10 mass % to 80 mass % both inclusive, a ratio of the total of iron and cobalt to total of tin, iron, and cobalt is from 11.3 mass % to 26.3 mass % both inclusive, a titanium content is from 0.5 mass % to 8 mass % both inclusive, and half-width of diffraction peak obtained by X-ray diffraction (peak obtained where diffraction angle of 2θ is from 34 deg to 37 deg both inclusive) is 1 deg or more.