Rotating Disc Electrodes and ECE Processes

Hence obtain an expression for under steady-state conditions. Also, find an expression for the current-potential waveshape for the ECE process. 

Under the assumption that the reaction layer is much thinner than the diffusion layer, the transport equation for B can be simplified to 

To obtain the voltammetric waveshape we note first that the electrochemical reversibility of the A/B couple imphes 

By Pick s first law the current at a rotating disc electrode is given by 

It follows from Eq. (8.15) that a mass transport corrected Tafel plot of E versus log[/ — 7j ] will have a gradient of 2.303RT/FViper decade. 

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