One of the important factors to improve performance and increase zinc - silver oxide battery energy density is enhancement in zinc plate capacity of attery. In order to enhance the capacity of zinc plate can increase the surface area of applied powders. Powder that produced by electrochemical method be cause high surface area of the powder. For this purpose a two-electrode systems, zinc electrode and nickel electrode, in alkaline solution is used. DC source is connected to the negative pole on the zinc electrode. The flow of electrons from the source inter to electrode and causes reducing the zinc ion present in the solution and zinc restored on the electrode surface. Powder produced by this method has a high level of surface area. Utilization of the active material powder increases the effective electrode reactant beyond helping to reduce battery weight. In addition to access more chemical activity and less polarizing,it is better that battery work at low current density. More effective surface reduce the level of current passing through the unit area. Electrolytic zinc powder with dendritic morphology provides more surface area . diffrent parameters such as the applied current density, the concentration of ZnO, KOH concentration, temperature, and distance between electrodes have influence on the morphology and size of the powder produced in this way. in this project Zinc powder production from alkaline soloution with electrochemical method, and the effect of temperature and distance between electrodes on morphology of the powders produced by this method was conducted using SEM images. Effects of morphology of the powders used in the manufacture zinc electrodes on performance of zinc - silver oxide battery was examined by the discharge curve and ac impedance test. In this study, the applied current density of 2000 A/m2, ZnO concentration of 1 M and KOH concentrations 8 M were considered as the fixed parameters and the distance between electrode and temperature were considered as variable parameters. produced powders were collected then acid washed and dried. SEM images taken from the powders show that by increasing the temperature to 70 °c powders are getting into the dendritic shape. This case also was observed by decreasing the distance between electrodes. By increasing temperature, into temperature range of 85-90 ° C. morphology of the powders going to hunk .The discharge curves also show that the increase in dendritic morphology of the powders and subsequently increase in electrode surface area Leads to increase in discharge time and potential of discharge. Electrochemical impedance test results also show raise the level of active surface and decreases the charge transfer resistance with an increase in dendritic morphology of the powders. key words Surface area, discharge, zinc electrode, ac impedance