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The zinc/silver cell is noted for its high volumetric energy density and its ability to deliver this energy at relatively high current drains. Silver oxide cells are ideal for miniature devices where space is limited, such as small electronic and photographic equipment. Their relatively high cost limits their usage to specialized applications.
Button shaped silver zinc cell assembly
The silver cell uses an amalgamated zinc anode, silver oxide as the cathode material, and a potassium hydroxide electrolyte. The silver cell is manufactured in button cell configurations. The silver button cell ranges from 14 mAh to 180 mAh.
Voltage
The open circuit voltage of the silver cell is 1.6 V. Typical median operating voltage is 1.5 to 1.2 V.
Discharge Characteristics
The silver oxide battery system has a flat discharge curve.
Energy Density
130 Wh kg-1 and500 Wh dm-3.
Effect of Discharge Load and Temperature
The silver oxide system is capable of discharge at relatively heavy loads. The silver system is best suited for operation from -20°C to 54°C.
Shelf Life
The charge retention of the silver cell is over 84% after two years of storage at 21°C.
