Coated nickel hydroxide powder for alkali secondary battery positive electrode active material and method of producing same

Provided is a coated nickel hydroxide powder in which dispersibility when converted into a paste is improved and agglomeration suppressed, and which can be filled at a high density into a three-dimensional porous metal body during production of positive electrodes for use in alkali secondary batteri...

Full description

Saved in:
Bibliographic Details
Main Authors NIHEI TOMOMICHI, OKATO KAZUAKI, SASAOKA HIDEO
Format Patent
LanguageEnglish
Published 22.07.2015
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
Online AccessGet full text

Cover

More Information
Summary:Provided is a coated nickel hydroxide powder in which dispersibility when converted into a paste is improved and agglomeration suppressed, and which can be filled at a high density into a three-dimensional porous metal body during production of positive electrodes for use in alkali secondary batteries. This coated nickel hydroxide powder comprises nickel hydroxide particles coated on the surface with a coating layer of a cobalt compound, and the pH (at a 25 DEG C reference) of a suspension comprising 10ml of water added to 10g of the coated nickel hydroxide powder is 10.2 or greater. To this end, the coated nickel hydroxide powder obtained through a crystallization step and a coating step is washed in the washing step until elution of ammonium ions into the suspension comprising 10ml of water added to 10g of the coated nickel hydroxide powder is 0.35mmol/l or less.
Bibliography:Application Number: CN201380060405