Adsorbed Surface- Electroactive Microparticles on Solid Electrodes

1 Adsorbed (Surface-)Electroactive Microparticles on Solid Electrodes 

The charge movement can be treated diffusion-like as electron hopping with coupled solution phase ion motion, contributing to the effective diffusion coefficient [34] (as in the studies cited for the general treatment of a three-phase electrode in Section 6.3.1). 

For high values of Kq, electrochemical reversibility can be reached at the point of 

The peak-to-peak separation of 50 tm and 5 tm microparticle spheres and hemispheres are compared with the case of the planar diffusion. The hemispherical particle exhibits a peak separation of zero at low scan rates, as it behaves as an adsorbed molecule. With increasing scan rates, A( )p increases and finally approaches the value(s) for the planar diffusion model. The larger the diameter of the hemispheres and spheres, the earlier the planar diffusion behavior is reached vdth increasing scan rates, as the curvature of larger particles has a lesser effect on the diffusion. 

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