Electrochemical Reduction of Oxygen and Nitric Oxide on Mn-Based Perovskites with Different A-Site Cations

Table 3

The activation energies for the reduction of oxygen and nitric oxide in the temperature interval 200 to 400°C given in eV. The activation energy is highest for the end member LaMnO_3 + d in the oxygen-containing atmosphere. The activation energies in the oxygen-containing atmospheres are almost the same for the three other manganite-based perovskites.

Compound	LaMnO3+δ		PrMnO3+δ		SmMnO3+δ		GdMnO3+δ
Gas	O2	NO	O2	NO	O2	NO	O2	NO
EA	0.87	0.37	0.64	0.45	0.65	0.66	0.65	0.63