A method for producing an alkaline secondary battery and an alkaline secondary battery nickel electrode excellent in cycle lifetime with a high capacity

摘要

1. Technical field to which the invention described in the claims belongs;The present invention relates to a method for producing a non-sintered nickel electrode for use in an alkaline secondary battery and an alkaline secondary battery.;2. The technical and technical aspects of the invention;It is an object of the present invention to provide an alkaline secondary battery having a high capacity and a long life by suppressing the diffusion of cobalt into the nickel hydroxide particles accompanied with the charging / discharging cycle in the nickel active material coated with cobalt.;3. Point of Solution of the Invention;A solution prepared by dissolving a predetermined amount of a Group II element in an aqueous solution of nickel hydroxide particles or nickel hydroxide-based particles dispersed therein, and an alkaline solution, and adjusting the amount of each solution to maintain the pH of the dispersion solution at 9 to 12 To precipitate a compound of a group II element around nickel hydroxide particles or nickel hydroxide-based particles in the dispersion solution to form a first compound layer of a compound of a group II element on the surface of the particle 1. A method of manufacturing a nickel electrode for an alkaline secondary battery, comprising the steps of: preparing an active material having a coating process and an active material holding step of holding the prepared active material on the active material holding body.;4. Important Uses of the Invention;The present invention relates to the improvement of active materials used in non-sintered nickel electrodes.