Investigation of Silver Oxide Electrochemical Behavior to Improve Silver-Zinc Battery Rechargeability

Sunday, October 11, 2015: 09:30
Phoenix East (Hyatt Regency)
J. V. Ortega, R. E. Dueber (ZPower), and T. W. Renkin (ZPower)
Cyclic voltammetry and galvanostatic cycling experiments where performed on silver thin films in conjunction with a quartz crystal microbalance (QCM) to identify the intermediate species and mass transport properties at the surface of a silver cathode in the presence of gelled aqueous electrolyte. Scanning electron microscopy (SEM) was then employed to characterize the physical effects from changing the discharge rates and the state-of-charge.  The use of additives on the surface and in the electrolyte was also explored and characterized. The results were then utilized in silver-zinc rechargeable button cell batteries and tested for increased electrode utilization, charge rate capability, and cycle life improvement.