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DOE OSTI · 2418178

Carbon dioxide reduction in solid oxide electrolyzer cells using transition metals infiltrated into Gd 0.1 Ce 0.9 O 1.95 (GDC10) scaffolds

Abu Hajer, Ahmad·Velraj, Samgopiraj·Daramola, Damilola A.·Trembly, Jason P.
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Abstract

Here, this study reports the catalytic activity of transition metal electrocatalysts (Co, Ni, and Cu) incorporated into Gd 0.1 Ce 0.9 O 1.95 (GDC10) cathodes for the electroreduction of CO 2 in solid oxide electrolyzer cells (SOECs). CO 2 electroreduction performance of cells having porous and non-infiltrated GDC10 cathodes was compared with the performance of cells containing transition metal electrocatalysts infiltrated into porous GDC10 cathodes at 750, 800, and 850°C. Results showed that cells with Co infiltrated cathodes had the best catalytic activity towards CO 2 electroreduction. Furthermore, these cells displayed good stability towards CO electroreduction, having a faradaic efficiency value close to 100% with insignificant voltage increase when tested for 48h at 750 and 850°C under the current densities of 0.2, and 0.4Acm -2 , respectively.

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25 ENERGY STORAGECO2 utilizationHigh temperature CO2High temperature CO2 electroreductionSolid oxide electrolyzer cellsTransition metal electrocatalystelectroreduction

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Abu Hajer, Ahmad, Velraj, Samgopiraj, Daramola, Damilola A., Trembly, Jason P.. 2023-04-29. Carbon dioxide reduction in solid oxide electrolyzer cells using transition metals infiltrated into Gd 0.1 Ce 0.9 O 1.95 (GDC10) scaffolds. https://doi.org/10.1016/j.jpowsour.2023.233040

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