Zinc–air Battery - Reaction Formulas

Reaction Formulas

Here are the chemical equations for the zinc–air cell:

Anode: Zn + 4OH– → Zn(OH)42– + 2e– (E0 = -1.25 V)
Fluid: Zn(OH)42– → ZnO + H2O + 2OH–
Cathode: 1/2 O2 + H2O + 2e– → 2OH– (E0 = 0.34 V pH=11)
Overall: 2Zn + O2 → 2ZnO (E0 = 1.59 V)

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