POROUS METALLIC BODY WITH LARGE SPECIFIC SURFACE AREA, PROCESS FOR PRODUCING THE SAME, POROUS METALLIC PLATY MATERIAL, AND ELECTRODE OF ALKALINE SECONDARY BATTERY

摘要

A porous metallic body that has a three-dimensional reticular skeleton structure wholly constituted of a powdery metallic sinter with a porosity of 10-60 % and that has a total porosity of 80-99 %. The specific surface are thereof is as large as, for example, 300-11,000 cm2/cm3. This body can be reinforced with reinforcing plates and is suitable as an electrode of a alkaline secondary battery capable of attaining a long service life and a large capacity of active materials which can be contained. The metallic body is produced by molding a foamable slurry containing a metallic powder, drying the molded slurry preferably after foaming, and sintering the same. IMAGE