| 摘要 |
PURPOSE:To obtain high voltage at a low cost by arranging a positive electrode made of lead oxide, a negative electrode mainly comprising a hydrogen storage alloy or a hydride capable of electrochemically absorbing and desorbing hydrogen, an acid-resistant separator, and an electrolyte comprising an acidic aqueous solution in a container. CONSTITUTION:A positive electrode 3 and a negative electrode 1 are alternately stacked so that the negative electrode 1 made of a hydrogen storage alloy or a hydride and the positive electrode 3 made of lead dioxide (PbO2) are arranged through a separator 2 to form an electrode group. The electrode group is arranged in a container 4 together with an electrolyte 5, and a cover 7 having an electrolyte pouring plug 6 is attached to the container 4, and a positive terminal 8 and a negative terminal 9 are installed in the cover to taken out electric power. The electrode potential of PbO2 which forms the positive electrode of an acidic storage battery using an acid aqueous solution as the electrolyte is higher than that of nickel oxide which forms the positive electrode of an alkaline storage battery using a caustic alkali aqueous solution as the electrolyte. High voltage is obtained at a low cost. |
