Potentiostatic Pulse Technique with Trapping

The analytical model given by Bockris and co-workers for the potentiostatic pulse technique involved only pure diffusion control and did not take into account hydrogen-entry kinetics or trapping. However, a more general model has since been 

The lattice hydrogen and the trapped hydrogen at reversible sites are assumed to be in local equilibrium. In addition, the coverage of both reversible and irreversible traps is assumed to be low because of the short charging times used in the pulse technique. The diffusion equation (87) can then be written as 

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