| 摘要 |
PURPOSE:To suppress deformation of a zinc electrode to increase cycle life of a battery by specifying particle size of metal zinc powder which acts as an active material and zinc oxide powder, and to suppress decrease of utilization of the active material by making exist a conductive material. CONSTITUTION:A zinc electrode comprises zinc oxide powder having a particle size of 0.1-0.5mu, an active material of metal zinc powder having a particle size of 1-6mu, an additive, a binder, and a conductive material. For example, 100wt% zinc oxide powder having a particle size of 0.1-0.5mu, 10wt% metal zinc powder having a particle size of 1-6mu, 2wt% mercuric oxide, and 2wt% carbon fiber are mixed. 5wt% polytetrafluoroethylene dispersion (concentration is 60%) and 50wt% water are added to the mixture and they are kneaded with a shearing force added. A kneaded material is pressed with a roller to make a 1.0mm. thick base sheet. The base sheet are kept in contact with both sides of an anode current collector, then they are pressed to form a 1.5mm. thick zinc electrode. |
