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:
Oct. 01, 2013
Filed:
Nov. 11, 2008
Akihisa Kajiyama, Yamaguchi-ken, JP;
Kazuhiko Kikuya, Fukuoka-ken, JP;
Teruaki Santoki, Fukuoka-ken, JP;
Osamu Sasaki, Fukuoka-ken, JP;
Satoshi Nakamura, Fukuoka-ken, JP;
Taiki Imahashi, Yamaguchi-ken, JP;
Hideaki Sadamura, Yamaguchi-ken, JP;
Akihisa Kajiyama, Yamaguchi-ken, JP;
Kazuhiko Kikuya, Fukuoka-ken, JP;
Teruaki Santoki, Fukuoka-ken, JP;
Osamu Sasaki, Fukuoka-ken, JP;
Satoshi Nakamura, Fukuoka-ken, JP;
Taiki Imahashi, Yamaguchi-ken, JP;
Hideaki Sadamura, Yamaguchi-ken, JP;
Toda Kogyo Corporation, Otake-shi, Hiroshima-ken, JP;
Abstract
The present invention relates to Li—Ni-based composite oxide particles comprising Mn, and Co and/or Al, wherein Co and Al are uniformly dispersed within the particles, and Mn is present with a gradient of its concentration in a radial direction of the respective particles such that a concentration of Mn on a surface of the respective particles is higher than that at a central portion thereof. The Li—Ni-based composite oxide particles can be produced by allowing an oxide and a hydroxide comprising Mn to mechanically adhere to Li—Ni-based oxide comprising Co and/or Al; and then heat-treating the obtained material at a temperature of not lower than 400° C. and not higher than 1,000° C. The Li—Ni-based composite oxide particles of the present invention are improved in thermal stability and alkalinity.