Temperature dependence of oxygen reduction mechanism on a titanium oxide-based catalyst made from oxy-titanium tetra-pyrazino-porphyrazine using carbon nano-tubes as support in acidic solution

In addition, we applied Hsueh's method to the study of the temperature dependence of the ORR for the first time. The activation energies of the four-electron reduction reaction at an overpotential of −0.40 V and the two-electron reduction reaction at an overpotential of −0.50 V were calculated to be 45.6 and 45.5 kJ mol−1, respectively.