Abstract: A method for producing a positive electrode material of Li-ion secondary batteries is disclosed.

Abstract: A metal-air fuel cell includes an anode and a cathode with an electrolyte between the anode and the cathode. The anode includes a plate-like body made of a composite anode plate including a reaction layer, a reaction-enhancing layer and a collector layer. A plurality of fins are formed on and extending from a surface of the anode plate. A plurality of openings are selectively defined in the anode plate in correspondence to the fins. The fins are arranged in an array with fins in adjacent rows aligned with each other or offset with respect to each other. The anode plate further includes a plurality of openings corresponding to each fin.

Abstract: A positive electrode material of a Li-ion secondary battery is disclosed. This positive electrode material has a formula of Li1+xMn2−yMyO4−zClz, wherein M can be magnesium (Mg), aluminum (Al), chromium (Cr), iron (Fe), cobalt (Co) or nickel (Ni) ions, 0≦x≦0.4, 0≦y≦0.3, and 0.01≦z≦1.0. By means of replacing some oxygen ions of this material with chlorine ions, the crystalline structure thereof can be varied and thus longer life cycle and better stability at high temperature can be achieved.

Abstract: A method for producing a positive electrode material adapted to the Li-ion secondary batteries is disclosed.