Reversible fuel electrode supported solid oxide cells fabricated by aqueous multilayered tape casting
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Data publicació2021-01-28
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Abstract
Fuel electrode supported solid oxide cells (SOCs) have been developed on an industrial scale using the aqueous tape-casting technique. The NiO–yttria-stabilized zirconia Y2O3–ZrO2 (YSZ) fuel electrode and YSZ electrolyte have been manufactured by multilayer co-laminated tape casting. Details of the tape-casting slurry formulations are described and discussed. Two types of cells were fabricatedwithdifferentmicrostructuresoftheNiO–YSZsupportdiscussed.Goodelectrochemical performance and stability in SOFC mode at 750 ¿C and 0.7 V for both button cells reaching around >0.75 W cm-2 and with no measurable degradation after >700 h were observed. The selected cell was scaled up to large-area cells (36 cm2 of the active area) and electrochemically tested at 750 ¿C in a single repetition unit (SRU) in SOFC (Solid Oxide Fuel Cell), SOEC (Solid Oxide Electrolysis Cell) and co-SOEC (Solid Oxide co-Electrolysis Cell) mode, and in a short-stack of two SRUs in SOFC mode. A current up to 17 A was obtained at 1.4 V (0.7 V cell-1) with the short-stack configuration in SOFC mode, corresponding to ~0.5 A cm-2 and 24 W. The performances of the aqueous-based SOC cells can be considered highly remarkable, thus supporting the success in scaling the fabrication of SOC stacks using more environmentally friendly processes than conventional ones.
CitacióBernadet, L. [et al.]. Reversible fuel electrode supported solid oxide cells fabricated by aqueous multilayered tape casting. "JPhys Energy", 28 Gener 2021, vol. 3, núm. 24002, p. 1-12.
ISSN25157655
Versió de l'editorhttps://iopscience.iop.org/article/10.1088/2515-7655/abd296
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