Silver oxide battery facts for kids

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Silver oxide batteries

Silver oxide batteries

Silver oxide batteries are primary cells. They are generally found in small sizes. They are expensive because they contain silver, but do not have toxic mercury like the cheaper mercury battery. They generate electricity by oxidation of zinc with silver(I) oxide. It has a basic electrolyte, usually potassium hydroxide or sodium hydroxide.

Contents

Chemical background
Related pages
Images for kids
See also

Chemical background

Some chemical reactions happen during discharging:

Reduction: $\mathrm{Ag_2O + H_2O + 2e^{\operatorname{-}} \longrightarrow\, 2Ag + 2(OH)^{\operatorname{-}}}$
Oxidation: $\mathrm{Zn + 2(OH)^{\operatorname{-}} \longrightarrow\, ZnO + H_2O + 2e^{\operatorname{-}}}$
Redox: $\mathrm{2Ag^{\operatorname{+}} + Zn \longrightarrow\, 2Ag + Zn^{2\operatorname{+}}}$
All: $\mathrm{Ag_2O + Zn \longrightarrow\, 2Ag + ZnO}$

Related pages

Images for kids

Several sizes of button and coin cells, some of which are silver-oxide
Silver-oxide battery used to power a quartz watch movement; battery is marked as containing no mercury

See also

In Spanish: Pila de óxido de plata para niños

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Silver oxide battery Facts for Kids. Kiddle Encyclopedia.