Effects of surface modification of Ni(OH)2 powders on the performance of nickel cathodes

A porous metallic film can be fixed onto the surface of Ni(OH)2 powders by the method of electroless plating. A nickel electrode made from modified powders exhibits better characteristics in terms of the active-material utilization, the average discharge voltage and high rate discharge. A slight amount of cobalt micro-encapsulation makes a great improvement in the utilization ratio of the active material, while micro-encapsulation of the nickel film does not merely enhance the active-material utilization but also the high rate discharge.