The Reduction of Oxygen on Teflon‐Bonded Perovskite Oxide Electrodes

The electrochemical reduction of oxygen on Teflon‐bonded electrodes in 45% was studied as a function of temperature and oxygen partial pressure. The activation energy was 10.75 kcal/mole and the relationship between and obeys the relationship , suggesting that the rate of oxygen chemisorption is the rate‐controlling step, Galvanostatic oxygen stripping showed that the surface coverage of oxygen was only 1% for both Sr‐doped and , and that the coverage was independent of temperature in the range 25°–80°C.