Abstract
A bio-inspired surfactant was utilized to assist in the efficient impregnation of a nano-CeO2 catalyst throughout both porous Solid Oxide Fuel Cells (SOFC's) electrodes simultaneously. The process included the initial modification of electrode pore walls with a polydopamine film. The cell was then submersed into a cerium salt solution. The amount of nano-CeO2 deposited per impregnation step increased by 3.5 times by utilizing this two-step protocol in comparison to a conventional drip impregnation method. The impregnated cells exhibited a 20% higher power density than a baseline cell without the nano-catalyst at 750°C (using humid H2 fuel).
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