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Étude de l'effet de la pression sur l'électrolyse de H2O et la co-électrolyse de H2O et CO2 à haute température

Abstract : This thesis work investigates the behavior of a solid oxide cell operating under pressure in high temperature steam electrolysis and co-electrolysis mode (H2O and CO2). The experimental study of single cell associated with the development of multi-physical models have been set up. The experiments, carried out using an original test bench developed by the CEA-Grenoble on two types of cells between 1 and 10 bar and 700 to 800 °C, allowed to identify in both operating modes that the pressure has a positive or negative effect on performance depending on the cell operating point (current, voltage). In addition, gas analyzes performed in co-electrolysis led to detect in situ CH4 production under pressure. These pressure effects were simulated by models calibrated at atmospheric pressure. Simulations analysis helped identify the pressure dependent mechanisms and propose operating conditions thanks to the establishment of operating maps.
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Lucile Bernadet. Étude de l'effet de la pression sur l'électrolyse de H2O et la co-électrolyse de H2O et CO2 à haute température. Matériaux. Université de Bordeaux, 2016. Français. ⟨NNT : 2016BORD0312⟩. ⟨tel-01674502⟩

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