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Avoid the quasi equilibrium assumption when evaluating the electrocatalytic oxygen evolution reaction mechanism by Tafel slope analysis

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Figure

Figure 1: Simulated polarisation curves for the OER. Step 1 limiting (solid line): KKSimulated reaction conditions: T=298.15 K,Step 2 limiting at low potential and step 1 limiting at high overpotential (dashed line):2 = 100 , K3=10−4, K2 = 106 ,3 = 10−5, O
Figure 2: Simulated polarisation curves for the OER when step 3 is the rds. θ(solid line):O ≈ 0 and θOH ≈ 1 K2 = 10−5 , K3 = 102, θO and θOH ≈ 0 (dashed line): K2 = 10−2 , K3 = 102, Otherparameters are per Figure 1.
Figure 3: Tafel slopes and rds for the OER following the electrochemical oxide mechanism over a rangeof K2 and K3 values

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