Co-sintering of gradient anode – electrolyte structure for microtubular SOFC
Kuterbekov K. Nikonov A. Bekmyrza K. Khrustov V. Pavzderin N. Kabyshev A. Kubenova M.
15 May 2024Elsevier Ltd
Ceramics International
2024#50Issue 1017242 - 17251 pp.
The present study is devoted to the fabrication of an anode supported microtubular solid oxide fuel cell (MT-SOFC) by co-sintering of polymer-ceramic films set. The investigation of the influence of the granulometric composition of Zr0.84Y0.16O2-δ (YSZ), Ce0.73Gd0.27O2-δ (GDC) powders and NiO/YSZ, NiO/GDC composites on the kinetics of their sintering made it possible to obtain a defect-free half-cell of anode supporting layer (NiO/YSZ) - anode functional layer (NiO/GDC) – YSZ electrolyte in a single sintering act at 1200 °C. The influence of a pore former (rice starch) on the microstructure of the anode supporting layer was studied. It was shown that the addition of 5 wt% pore former results in an increase of the porosity and gas permeability of the layer by ∼1.6 and ∼4 times, respectively. Layers of the second GDC electrolyte and La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode were applied sequentially by dip-coating and painting and were sintering at 1450 and 1200 °C, respectively. The maximum specific power of the obtained MT-SOFC at 850 °C was 184 mW/cm2.
Anode support , Co-sintering , Microtubular solid oxide fuel cell , Tape casting
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L.N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
Institute of Electrophysics, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620016, Russian Federation
L.N. Gumilyov Eurasian National University
Institute of Electrophysics
10 лет помогаем публиковать статьи Международный издатель
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