PURPOSE: To obtain a high capacity silver oxide battery in which steady closed circuit voltage continues from the initial stage to the final stage by forming a positive electrode with a mixture of granular silver oxide whose surface is reduced and manganese dioxide particle coated with silver.
CONSTITUTION: A positive electrode is formed with a mixture of granular silver oxide whose surface is reduced and manganese dioxide particle coated with silver. Since manganese dioxide particle is coated with silver, the network of silver is not broken even when it is mixed to silver oxide, and high conductivity is retained, and decrease in closed circuit voltage in the initial stage of discharge can be prevented. The optimum content of silver required for coating manganese dioxide is 1∼5 wt.% of manganese dioxide. The mixing ratio of the silver coated manganese dioxide to the surface-reduced silver oxide is preferable to limit to 1∼5 wt.% of the positive electrode.
FUJI KENJI
KONDO MASATSUGU
SAWAI TADASHI
