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. 19, 2017
Filed:
Apr. 12, 2012
Taiki Imahashi, Kitakyushu, JP;
Hiroyasu Watanabe, Kitakyushu, JP;
Kazuhiko Kikuya, Kitakyushu, JP;
Hideaki Sadamura, Sanyo Onoda, JP;
Taiki Imahashi, Kitakyushu, JP;
Hiroyasu Watanabe, Kitakyushu, JP;
Kazuhiko Kikuya, Kitakyushu, JP;
Hideaki Sadamura, Sanyo Onoda, JP;
TODA KOGYO CORPORATION, Hiroshima, JP;
Abstract
The present invention provides lithium composite compound particles having good high-temperature storage property and excellent cycle characteristics as an active substance for a non-aqueous electrolyte secondary battery, and a secondary battery using the lithium composite compound particles. The Li—Ni composite oxide particles for a non-aqueous electrolyte secondary battery according to the present invention have a BET specific surface area of 0.05 to 0.8 m/g; an atomic ratio (Ma/Ni) of a concentration of an amphoteric metal to a concentration of Ni on an outermost surface of the respective Li—Ni composite oxide particles is 2 to 6; and the concentration of the amphoteric metal on the outermost surface of the respective Li—Ni composite oxide particles is higher than a concentration of the amphoteric metal at a position spaced by 50 nm from the outermost surface toward a center of the respective Li—Ni composite oxide particles.