The global electrode process kinetics and transport

9 The effect of the electrolyte double layer on electrode kinetics 

10 Electrode processes involving multiple electron transfer 

11 Electrode processes involving coupled homogeneous reactions 

In the last two chapters the kinetics of electrode processes and mass transport to an electrode were discussed. In this chapter these two parts of the electrode process are combined and we see how the relative rates of the kinetics and transport cause the behaviour of electrochemical systems to vary1-4. 

Transport to the electrode surface as described in Chapter 5 assumes that this occurs solely and always by diffusion. In hydrodynamic systems, forced convection increases the flux of species that reach a point corresponding to the thickness of the diffusion layer from the electrode. The mass transfer coefficient kd describes the rate of diffusion within the diffusion layer and kc and ka are the rate constants of the electrode reaction for reduction and oxidation respectively. Thus for the simple electrode reaction O + ne-— R, without complications from adsorption, 

---