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. 14, 2012
Filed:
Nov. 09, 2007
Satoko Kaneko, Tokyo, JP;
Masahiko Taniguchi, Tokyo, JP;
Asao Iwata, Tokyo, JP;
Ryuji Shiozaki, Tokyo, JP;
Nobuo Ando, Tokyo, JP;
Satoko Kaneko, Tokyo, JP;
Masahiko Taniguchi, Tokyo, JP;
Asao Iwata, Tokyo, JP;
Ryuji Shiozaki, Tokyo, JP;
Nobuo Ando, Tokyo, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A crystal structure is provided to improve a characteristic of an electrode material, such as vanadium oxide. In the crystal structure, an amorphous state and a layered crystal state coexist at a predetermined ratio in a layered crystalline material such as vanadium oxide. In the layered crystalline material having such a layered crystal structure, layered crystal particles having a layer length Lof 30 nm or shorter are formed. Ions are easily intercalated to and deintercalated from between the layers. When such a material is used for the positive electrode active material, a nonaqueous lithium secondary battery of which the discharge capacity and the cycle characteristic are good is manufactured.