Browsing by Subject "Concentration gradients"

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Elucidating the effect of mass transport resistances on hydrogen crossover and cell performance in PEM water electrolyzers by varying the cathode ionomer content

Trinke, P.; Keeley, G.P.; Carmo, M.; Bensmann, B.; Hanke-Rauschenbach, R. (Bristol : IOP Publishing Ltd., 2019)

An important challenge for polymer electrolyte membrane (PEM) water electrolysis is to reduce the permeation of the produced gases. This crossover affects the cell efficiency and causes safety issues. The crossover increases ...
Gas Component Transport Across the Soil-Atmosphere Interface for Gases of Different Density: Experiments and Modeling

Bahlmann, L.M.; Smits, K.M.; Heck, K.; Coltman, E.; Helmig, R.; Neuweiler, I. (Hoboken, NJ : Blackwell Publishing Ltd, 2020)

We investigate the influence of near-surface wind conditions on subsurface gas transport and on soil-atmosphere gas exchange for gases of different density. Results of a sand tank experiment are supported by a numerical ...

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