Cobalt (iii) encapsulated nickel hydroxides and basic carbonates for battery electrodes

Abstract From the Canadian patent

A process for producing a cobalt III encapsulated nickel hydroxide or basic nickel carbonate product including the steps of:(i) providing an ammoniacal solution including cobalt ammine complexes and nickel II ammine complexes;(ii) progressively reducing the ammonia content to sequentially precipiate the nickel as an hydroxide or basic carbonate; and(iii) further reduce the ammonia content to precipitate the majority of the cobalt as cobalt III oxide hydroxide; wherein the majority of cobalt III oxide hydroxide coats on the surface of the precipitate nickel hydroxide or basic nickel carbonate to form a coated particle.