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:
Jul. 10, 2018
Filed:
Oct. 12, 2013
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Katsuya Kase, Ehime, JP;
Ryuichi Kuzuo, Ehime, JP;
Minoru Shiraoka, Ehime, JP;
Hideo Sasaoka, Ehime, JP;
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Abstract
A method for producing coated nickel hydroxide powder for a positive electrode of an alkaline secondary battery wherein the pH of a suspension of a nickel hydroxide powder is kept at 8 to 11.5, and an aqueous cobalt salt solution and an aqueous alkali solution are supplied to the suspension to coat the surface of nickel hydroxide particles with cobalt hydroxide. Then, the pH of a slurry of the cobalt hydroxide-coated nickel hydroxide powder is adjusted to 12.5 to 13.0, and oxygen is supplied to the slurry so that the total amount of oxygen supplied per mole of cobalt in the coating is 30 l/mol or more to oxidize the cobalt hydroxide.