酸性锌锰干电池
正:2MnO2+2e- +2NH4+=Mn2O3+H2O+2NH3
负:Zn-2e-=Zn2+
总:2MnO2+Zn+2NH4+=Mn2O3+Zn2+ +2NH3
碱性锌锰干电池
正:2MnO2+2e- +H2O=Mn2O3+2OH-
负:Zn-2e- +4OH-=[Zn(OH)4]2-
总:2MnO2+Zn+2OH- +H2O=Mn2O3+[Zn(OH)4]2-