Fabrication methods to increase efficiency and decrease losses in electrochemical fuel cells.
Low volumetric efficiency, difficult assembly and high losses in conventional fuel cell design.
The invention describes a novel fuel cell design that uses a combined Direct-Ink-Writing (DIW)-CVD process forming an interconnected, 3-dimentional network to potentially overcome the limitations of the conventional tubular design, namely its low volumetric efficiency, difficult assembly and high losses. Each tube in the multi-tube SOFC device is prepared by layer-by-layer deposition of polymer precursor, mixed electronic-ionic conducting (MIEC) cathode material, solid electrolyte material, and cermet anode layer. A calcination step for polymer removal is performed, followed by gas supply of air and fuel to the respective electrodes.
- Enhanced surface-to-volume ratio
- Single manufacturing step
- Interconnected tube network is created in-situ
- Minimum losses in the electrolyte