Briefly, lattice oxygen leaves the surface at OCP and hydroxyls get adsorbed on the vacancy thus created. Due to this dynamic exchange, equilibrium is not attained within the timeframe of the experiment and a continuous rise in the potential happens. Cleary, this is an oxidation process and lattice oxygen removal justifies this as per the reaction; 𝑂 2-→ 1/2𝑂 2 . To validate this further, we investigated the OCP behaviour of Pt wire (Figure ). OCP behaviour from Figure suggest that due to the absence of dynamic exchange of lattice oxygen in Pt metal, equilibrium is quickly reached and OCP becomes saturated. Once the methanol is added, potential tends to decrease as dynamic exchange is diminished as a result of methanol adsorption (Figure ). The schematic representation of reaction occurring at unbiased condition is mentioned in Figure .