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The Ti-Supported MnO_2 electrode was modified by introducing SnO_2+RuO_2+MnO_2 as an intermediate layer into the Ti/MnO_2 interface. The anodic polarization curves were measured at various temperatures ranging from 30 to 80℃ and the activation energy for the oxygen evolution reaction was evaluated. The experimental activation energy increased linearly with increasing the overpotential. The activation energy at the equilibrium potential was linearly correlated with the difference between the crystal field stabilization energies of Mn~(4+) at initial state and Mn~(4+) at transition state. The electrocatalysis characteristics of the anode were discussed by means of the mechanism of the substitution reaction of the ligand(S_N1 and S_N2) and molecular orbital theory. The results show that the anode has better electrocatalystic characteristics.
The Ti-Supported MnO 2 electrode was modified by introducing SnO 2 + RuO 2 + MnO 2 as an intermediate layer into the Ti / MnO 2 interface. The anodic polarization curves were measured at various temperatures ranging from 30 to 80 ° C. and the activation energy for the oxygen evolution reaction The experimental activation energy increased linearly with increasing overpotential. The activation energy at the equilibrium potential was linearly correlated with the difference between the crystal field stabilization energies of Mn ~ (4+) at initial state and Mn ~ (4+) at transition state. The electrocatalysis characteristics of the anode was discussed by means of the mechanism of the substitution reaction of the ligand (S_N1 and S_N2) and molecular orbital theory. The results show that the positive has better electrocatalystic characteristics.