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:
Jun. 30, 2015
Filed:
Nov. 01, 2011
Taisa Ikeda, Kitakyushu, JP;
Kazuki Tagawa, Kitakyushu, JP;
Hiroshi Ono, Kitakyushu, JP;
Hideki Ono, Kitakyushu, JP;
Keiji Taura, Kitakyushu, JP;
Ryoji Akamine, Kitakyushu, JP;
Yoichi Kawano, Kitakyushu, JP;
Taisa Ikeda, Kitakyushu, JP;
Kazuki Tagawa, Kitakyushu, JP;
Hiroshi Ono, Kitakyushu, JP;
Hideki Ono, Kitakyushu, JP;
Keiji Taura, Kitakyushu, JP;
Ryoji Akamine, Kitakyushu, JP;
Yoichi Kawano, Kitakyushu, JP;
NIPPON STEEL CHEMICAL CO., LTD., Tokyo, JP;
Abstract
A negative electrode active material of lithium secondary battery includes: at least one of a petroleum-derived green coke and a coal-derived green coke, and at least one of a petroleum-derived calcined coke and a coal-derived calcined coke within a mass ratio range of 90:10 to 10:90, and a phosphorous compound within a range of 0.1 to 6.0 parts by mass in amount equivalent to phosphor relative to 100 parts by mass of the at least one of the green cokes and the at least one of the calcined cokes.