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| Hauptseite > Publikationsdatenbank > Processing and characterization of multi-layer ceramic protonic cells for large scale hydrogen production |
| Hauptseite > Publikationsdatenbank > Processing and characterization of multi-layer ceramic protonic cells for large scale hydrogen production |
| Conference Presentation (After Call) | FZJ-2023-03641 |
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2023
Abstract: Proton-conducting solid oxide electrolytes are highly appealing for producing hydrogen on a large scale through steam electrolysis at moderate temperatures. Yet, processing such electrolytes for industrial purposes poses several challenges. This paper presents an economical tape-casting route that produces flat, planar protonic electrolysis cells with impressive dimensions of up to 100mm x 100mm x 0.5mm. These cells are constructed using NiO-SrZr0.5Ce0.4Y0.1O3-d as the substrate, which ensures minimal warping and no cracks in the end-fired state.The three-layered green tapes achieved dense, gas-tight electrolyte layers after co-sintering at 1300 ºC for 5 hours. Using Ba0.5La0.5CoO3-d as the anode electrode demonstrates remarkable capabilities and endurance within the 500-600 °C temperature range, as indicated by its current-voltage characteristics and hydrogen evolution rates. Furthermore, based on Raman spectra analysis and mappings of the half-cell surface and cross-section (as illustrated in Figure 1), it is apparent that sintering at temperatures above 1350 °C leads to the emergence of fresh crystal defects that alter the perovskite host lattice. These issues together with polarization processes that impact performance in the fuel cell mode identified through impedance spectra analysis of will be presented. Acknowledgment: The authors gratefully acknowledge financial support through JSPS KAKENHI Grant-in-Aid for Scientific Research (C), No. 19K05672, NEDO (International collaboration) JPNP20005, JSPS Core-to-Core (Solid Oxide Interfaces for Faster Ion Transport) and WPI-I2CNER sponsored by the World Premier International Research Center Initiative (WPI), MEXT, Japan.References: [1] Kwati, L. Wendelin, D.; Ivanova, M.; Meulenberg, W.; Ishihara, T.; Matsumoto, H. Processing Ceramic Proton Conductor Membranes for Use in Steam Electrolysis. Membranes, 10(11) p339 (2020) .
Keyword(s): Energy (1st) ; Materials Science (2nd)
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