Abstract
A positive-electrolyte-negative (PEN) assembly solid oxide fuel cell (SOFC) with a thin electrolyte film for intermediate temperature operation was fabricated. Instead of the traditional screen-printing method, both anode and cathode catalysts were pressed simultaneously and formed with the fabrication of nano-composite electrolyte by press method. This design offered some advantageous configurations that diminished ohmic resistance between electrolyte and electrodes. It also increased the proton-conducting rate and improved the performance of SOFCs due to the reduction of membrane thickness and good contact between electrolyte and electrodes. The fabricated PEN cell generated electricity between 600°C and 680°C using H2S as fuel feed and air as oxidant. Maximum power densities 40 mW·cm−2 and 130 mW·cm−2 for the PEN configuration with a Mo-Ni-S-based composite anode, nano-composite electrolyte (Li2SO4+Al2O3) film and a NiO-based composite cathode were achieved at 600°C and 680°C, respectively.
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Zhong, L., Luo, J. & Karl, C. Fabrication and performance of PEN SOFCs with proton-conducting electrolyte. Front. Chem. Eng. China 1, 40–44 (2007). https://doi.org/10.1007/s11705-007-0008-6
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DOI: https://doi.org/10.1007/s11705-007-0008-6