Oxygen Layers on Different Materials and Inhibition of Fuel Oxidations

Formation and Reduction of Oxygen Layers on Platinum Metals and Some Alloys 

Oxygen Layers on Different Materials and Inhibition of Fuel Oxidations 

The curves in Fig. 8 were recorded after some time of cycling. The shape of the initial i — U curves and the cause for the transition from the initial shape to the final shape under voltammetric conditions are discussed in section 7 of chapter VI. 

The i— U curves measured on the platinum-gold alloys, which consist of a platinum-rich phase and a gold-rich phase 2, demonstrate [51] that the formation and reduction of the oxygen layers on patches of these two phases on the surface occur independently of each other (compare section 8 in chapter VI). On the platinum-chromium alloys the formation and reduction of oxygen layers on patches of chromium overshadows that on platinum patches. 

The shape of the 1/coCs curve depends [54, 55] upon the type and concentration of the anion. The described dependence of Cs upon U 

---