Gas-diffusionselektroden beim betrieb mit gasgemischen

Abstract

This paper deals with gas diffusion electrodes fed with inert ingredients containing reaction gases. In the first part the transport phenomena are calculated, which take place within the gas-filled region of a single pore, where the reaction gas is transported by diffusion and convection to the zone of the three phase boundary.

In the second part the composition of the gas within an operating gas diffusion electrode is discussed. The optimal shape of such an electrode is calculated by a variation problem.

In the third part experiments with “Janus”-shaped DSK-electrodes are described. The relationship between the four quantities (current I, polarization η, reaction gas content x₁, stream of the waste gas $\text{dot}\text{M}\text{2}$), which mark the state of the electrode, are given in the diagrams. They give a complete picture of the behaviour of gas diffusion electrodes fed with inert ingredients containing gases.