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:
Sep. 02, 2014
Filed:
Sep. 28, 2009
Atsushi Sano, Tokyo, JP;
Keitaro Otsuki, Tokyo, JP;
Yosuke Miyaki, Tokyo, JP;
Takeshi Takahashi, Tokyo, JP;
Tohru Inoue, Tokyo, JP;
Akiji Higuchi, Kyoto, JP;
Atsushi Sano, Tokyo, JP;
Keitaro Otsuki, Tokyo, JP;
Yosuke Miyaki, Tokyo, JP;
Takeshi Takahashi, Tokyo, JP;
Tohru Inoue, Tokyo, JP;
Akiji Higuchi, Kyoto, JP;
TDK Corporation, Tokyo, JP;
Abstract
An active material capable of forming an electrochemical device excellent in its discharge capacity and rate characteristic is provided. The active material in accordance with a first aspect of the present invention comprises a compound particle containing a compound having a composition represented by the following chemical formula (1), a carbon layer covering the compound particle, and a carbon particle. The active material in accordance with a second aspect of the present invention comprises a carbon particle and a compound particle having an average primary particle size of 0.03 to 1.4 μm, being carried by the carbon particle, and containing a compound represented by the following chemical formula (1):LiMXO  (1)where a satisfies 0.9≦a≦2, M denotes one species selected from the group consisting of Fe, Mn, Co, Ni, and VO, and X denotes one species selected from the group consisting of P, Si, S, V, and Ti.