Fabrication and electrochemical properties of SOFC single cells using porous yttria-stabilized zirconia ceramic support layer coated with Ni |
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| Affiliation: | 1. Division of Advanced Materials Engineering, Hydrogen & Fuel Cell Research Center, Research Center of Advanced Materials Development, Chonbuk National University, Jeonbuk, Republic of Korea;2. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China;3. Department of Manufacturing & Mechanical Engineering Technology, Rochester Institute of Technology, United States;4. Expantech Co., Ltd., Gyeonggi, Republic of Korea;1. Materials and Energy Research Center (MERC), P.O. Box 14155-4777, Tehran, Iran;2. Fuel Cell Research Center and Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, South Korea;1. Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123, Trento, Italy;2. INSTM, Trento Research Unit, Via G. Giusti 9, 50121, Florence, Italy;1. Department of Industrial Engineering, University of Trento, via Sommarive 9, I-38123 Trento, Italy;2. SOFCpower Spa, Viale Trento, 115/117 – c/o BIC – modulo D, I-38017 Mezzolombardo, Italy;1. Department of Hydrogen Energy and Plasma Technologies, Tomsk Polytechnic University, 30 Lenina Ave., Tomsk 634050, Russia;2. Laboratory of Applied Electronics, Institute of High Current Electronics, 2/3 Akademichesky Ave., Tomsk 634055, Russia;3. Department of Structural Macrokinetics, Tomsk Scientific Center, 10/4 Akademichesky Ave., Tomsk 634055, Russia;1. Institute of Thermal Engineering, Graz University of Technology, Inffeldgasse 25/B, 8010 Graz, Austria;2. Department of Engineering, Universitá degli Studi di Perugia, Via G. Duranti 93, Perugia 06125, Italy;3. BIOENERGY 2020+, Inffeldgasse 21b, Graz 8010, Austria |
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| Abstract: | A porous yttria-stabilized zirconia (YSZ) ceramic supported single cell with a configuration of porous YSZ support layer coated with Ni/Ni–Ce0.8Sm0.2O1.9 (SDC) anode/YSZ/SDC bi-layer electrolyte/La0.6Sr0.4Co0.2Fe0.8O3?δ cathode was fabricated. The porosity, mechanical strength, and microstructure of porous YSZ ceramics were investigated with respect to the amount of poly(methyl methacrylate) (PMMA) used as a pore former. Porous YSZ ceramics with 56 vol.% PMMA showed a mechanical strength of 24 ± 3 MPa and a porosity of 37 ± 1%. The electrochemical properties of the single cell employing the porous YSZ support layer were measured using hydrogen and methane fuels, respectively. The single cell exhibited maximum power densities of 421 mW/cm2 in hydrogen and 399 mW/cm2 in methane at 800 °C. Moreover, at a current density of 550 mA/cm2, the cell maintained 91% of its initial voltage after operation in methane for 13 h at 700 °C. |
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| Keywords: | Porous YSZ support layer Single cell Porosity Spin coating |
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