1.To simplify the preparation process of air electrode, and to improve the electrochemical cycling stability of metal hydride-air batteries.2.To design battery construction with feasibility and reasonableness.3.To improve the discharge power density up to 60mW/cm2and cycle life up to 150 cycles. Description of the technical advantages:1.Metal hydride-air batteries consist of rare earth hydrogen storage alloys as negative electrodes, bi-functional oxygen-diffusion electrodes (rare earth perovskite type as catalysts), an alkaline aqueous solution as electrolyte.2.This kind of metal-air battery keeps the advantages of NiMH battery and H2-O2 fuel cell, respectively, and has higher energy density (100-220Wh・kg-1).3.Lower cost, safety and environment friendliness, close to the requirements of the United State Advanced Battery Consortium (USABC). This kind of battery is expected to become the main energy source of the future electric vehicles and mobile communication equipment.Expected to reach the market value:Electric vehicle at domestic and international markets has great potential, which will provide opportunities for the development and marketing of power battery industry application.  If the cost of MH-air battery pack is 600RMB and production of 1 million battery pack is expected, the annual output will reach 600 million RMB, 120 million RMB profit plus taxes, and add 1000 persons employment.Ideal way of cooperation:Technological Development