| 摘要 |
PURPOSE:To increase cycle life by forming a zinc electrode of an alkaline electrode with an active material prepared by adding hydrophilic short fiber, an additive, and a binder to zinc oxide powder and metal zinc powder both having a specified particle size. CONSTITUTION:Zinc oxide powder having a particle size of 0.1-0.5mu, and metal zinc powder having a particle size of 1-6mu and rayon short fiber are mixed. Polytetrafluoroethylene dispersion and water are added to above mixture and they are kneaded. A paste sheet made of the kneaded material is kept in contact with an anode current collector to form a zinc electrode 1. The zinc electrode 1 is combined with a sintered nickel electrode 2 with an electrolyte absorbing layer 4 and a separator 3 interposed, and they are accommodated in a container 5 to form a nickel-zinc storage battery. Crystal growth of an active material and deformation of an electrode plate are prevented, and electrolyte is supplied smoothly and cycle life is increased. |
