TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Portion: The air permeable and water-impermeable portion is a mixture of carbon particles and hydrophobic particles. The air permeable, water-impermeable portion is a layer bonded to one side of electrically conductive structure. The catalytic portion is a layer bonded to other side of electrically conductive structure. Preferred Material: The particulate material having high surface area is activated carbon, molecular sieves or zeolite.Preferred Composition: Mixture of carbon particles and hydrophobic particles is in the ratio of 50:1-3:1, preferably 9:1-6:1. The electrolyte is 25-50% potassium hydroxide solution. The catalytic layer comprises mixture of 5 parts of graphite particle, 2 parts of particulate material having high surface area, 4 parts of wet metal hydroxide and 0.2 parts of hydrophobic particles.    TECHNOLOGY FOCUS - POLYMERS - Preferred Particles: The hydrophobic particles are polymers chosen from PTFE (polytetrafluoroethylene), polyethylene, polypropylene and polystyrene. The carbon particles are carbon fibers or graphite. The carbon particles are graphite particles and hydrophobic particles are PTFE, which are bonded together with epoxy.    TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Structure: The electrically conductive structure is honeycomb structure or mesh made from conductive metal. The cathode structure is spherical structure enclosing metal anode. The cathode structure has several cathodes facing or completely surrounding the metal anode.Preferred Battery: The battery further comprises an inert auxiliary electrode positioned between the case for contacting the electrolyte, a power source connected between metal anode and inert auxiliary electrode for recharging metal-air battery and an apparatus (motor connected to rotate anode) for moving metal anode to obtain even growth of metal on anode during recharging. The auxiliary electrode serves as a cathode for recharging the battery and is made of carbon fibers. SPECIFIC COMPOUNDS - The metal hydroxide is nickel hydroxide, cobalt hydroxide, iron hydroxide, cerium hydroxide, manganese hydroxide or chromium hydroxide. The metal anode is zinc, iron, cadmium, copper and aluminum, preferably zinc.