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:
Nov. 10, 2015
Filed:
Nov. 16, 2012
Mitsuru Ishibashi, Yokohama, JP;
Takuya Iwasaki, Uenohara, JP;
Kazuhiro Yasuda, Yokohama, JP;
Keigo Hoshina, Yokohama, JP;
Yorikazu Yoshida, Yokohama, JP;
Hiroki Inagaki, Yokohama, JP;
Norio Takami, Yokohama, JP;
Mitsuru Ishibashi, Yokohama, JP;
Takuya Iwasaki, Uenohara, JP;
Kazuhiro Yasuda, Yokohama, JP;
Keigo Hoshina, Yokohama, JP;
Yorikazu Yoshida, Yokohama, JP;
Hiroki Inagaki, Yokohama, JP;
Norio Takami, Yokohama, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
According to one embodiment, a battery electrode includes an active material layer and a current collector is provided. The active material layer contains particles of a monoclinic β-type titanium complex oxide and particles of a lithium titanate having a spinel structure. When a particle size frequency distribution of particles contained in the active material layer is measured by the laser diffraction and scattering method, a first peak Pappears in a range of 0.3 μm to 3 μm and a second peak Pappears in a range of 5 μm to 20 μm in the frequency distribution diagram. The ratio F/Fof the frequency Fof the first peak Pto the frequency Fof the second peak Pis 0.4 to 2.3.