Chemical Current-Producing Reactions in Batteries

Reactions in batteries are chemical reactions between an oxidizer and a reducer. In reactions of this type, the reducer being oxidized releases electrons while the oxidizer being reduced accepts electrons. An example of such a redox reaction is the reaction between silver oxide (the oxidizer) and metallic zinc (the reducer)  

In the simple normal case a battery (cell) consists of two electrodes made of different materials immersed in an electrolyte. The electrodes are conducting metal 

FIGURE 19.1 Schematic of processes in a zinc-silver oxide battery during discharge. 

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