Abstract
Hydrodynamic conditions in porous flow-through electrodes are discussed with special emphasis on radial diffusion effects on the efficiency of reactant conversion. The effect of porosity and tortuosity on the conversion efficiency are also considered. It is shown experimentally that radial diffusion limits the electrode efficiency forφ(L)=vr2/2DL>0.5 and normal porosity and tortuosity values; θq≃1. Forφ(L)<0.5, the electrode works with 100% efficiency.
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