Solid oxide fuel cell anode surface modification by magnetron sputtering of NiO/YSZ thin film

5th International Congress on Energy Fluxes and Radiation Effects 2016

Solovyev, A.A.^1,2 ; Shipilova, A.V.^1,2 ; Ionov, I.V.^1,2 ; Smolyanskiy, E.A.^1 ; Lauk, A.L.^1 ; Kovalchuk, A.N.^1,2 ; Remnev, G.E.^1 ; Lebedynskiy, A.M.^1

Tomsk Polytechnic University, 30 Lenin Ave., Tomsk

634050, Russia^1

Institute of High Current Electronics SB RAS, 2/3 Akademichesky Ave., Tomsk

634055, Russia^2

关键词: Anode functional layer;    Anode supported solid oxide fuel cells;    Deposition conditions;    La0.6sr0.4co0.2fe0.8o3;    Oxygen flow rates;    Solid oxide fuel cell anodes;    Sputtering process;    YSZ electrolytes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/830/1/012106/pdf
DOI  :  10.1088/1742-6596/830/1/012106

来源: IOP

【 摘 要 】

NiO/ZrO2-Y2O3(NiO/YSZ) anode functional layers (AFL) with 16-60 vol.% of NiO were deposited onto NiO/YSZ anode substrates by magnetron sputtering, followed by annealing in air at 1200 °C. The optimal deposition conditions for NiO/YSZ were determined. NiO content in the films was varied by changing the oxygen flow rate during the sputtering process. The microstructure and phase composition of NiO/YSZ anode functional layer were studied by SEM and XRD methods. Anode functional layers were fully crystallized and comprised of grains up to 500 nm in diameter after reduction in hydrogen. Anode-supported solid oxide fuel cells (SOFC) with the diameter of 20 mm including the magnetron sputtered AFL, 4-microns thick YSZ electrolyte and La0.6Sr0.4Co0.2Fe0.8O3/Ce0.9Gd0.1O2(LSCF/CGO) cathode were fabricated and tested. Electrochemical properties of the single fuel cells were investigated as a function of NiO volume content in AFL and AFL thickness.