| 摘要 |
<p>An active material used for a three-dimensional cell in which a negative electrode cell and a positive electrode cell are disposed with a porous separator interposed between the cells, a negative electrode active material and an electrolytic solution are placed in the negative electrode cell, a positive electrode active material and an electrolytic solution are placed in the positive electrode cell, and current collectors are disposed in the cells and a method for manufacturing such an active material are disclosed. As three-dimensional cells, nickel-hydrogen secondary cells comprising nickel hydroxide for the positive electrode active material and a hydrogen-storing alloy are known. However, these conventional cells involve problems such as the one that after a number of cycles of charging/discharging the hydrogen-storing alloy changes into powder, and the powder passes through the pores of the porous separator and enters the positive electrode, causing electrical connection between the positive and negative electrodes. According to the invention, a conductive filler is added to the powder to be used as the active material, and the powder is molded in grains, a sheet, or a rod and cured by using a resin, thus solving the above problem.</p> |
