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. 24, 2014
Filed:
Apr. 04, 2012
Nobuhiro Ogihara, Nagakute, JP;
Nobuhiro Ogihara, Nagakute, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Nagakute-shi, JP;
Abstract
A negative electrode for a lithium secondary battery includes a negative-electrode active material having a specific surface area of Sx (m/g) and an average particle size of Lx (μm), a fibrous conductive material having a specific surface area of Sy (m/g) and an average length of Ly (μm), and a granular conductive material having a specific surface area of Sz (m/g) and an average particle size of Lz (μm), in which letting the negative-electrode active material content be X, letting the fibrous conductive material content be Y, and letting the granular conductive material content be Z, Log((SyY+SzZ)/SxX×10)×Log((LyY+LzZ)/LxX×10) is defined as an electrode parameter, and the electrode parameter satisfies Log((SyY+SzZ)/SxX×10)×Log((LyY+LzZ)/LxX×10)≧0.