MICROFLUIDIC GAS DIFFUSION ELECTRODE FOR ELECTROWETTING MONITORING AND VISUALIZATION OF ELECTROCHEMICAL REACTIONS

Gas diffusion electrodes (GDEs) play a major role in electrochemical processes like fuel cells, electrochemical CO2 reduction [1] or chloralkali synthesis [2].The desired reactions in these processes occur near a triple phase boundary formed by the solid GDE, a liquid electrolyte and a gaseous feed of reactants [1].However, investigating this reaction site in detail remains challenging.Several works are concerned with visualizing water distribution in gas