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Next-generation Flexible Solid Oxide Fuel Cells with Highly Thermomechanical Stability

Abstract

Solid oxide cell (SOC) converts chemical energy into electrical energy at high temperature with very high energy efficiency and fuel flexibility. However, repeated redox and thermal cycles in harsh environment cause mechanical deformation or crack formation under pressure derived from SOCs stacked up. Flexible ceramic components can provide the SOCs with thermomechanical shock tolerance to relieve such stress and to achieve long-lasting operation. Here, a next-generation flexible SOC (F-SOC) with bendable 3 mol % yttria-stabilized zirconia (3YSZ) electrolyte is carefully controlled by composition-dependent phase transition, grain size, and surface roughness. Furthermore, the cell production includes simple and cost-effective techniques including tape-casting, screen-printing, and co-firing processes which ensures its reproducibility. The F-SOC fulfills noteworthy 4.27 % degradation in on-off cycles for 500 h, producing reasonable power output. The results described here can establish a basement towards next-generation flexible SOCs with thermomechanical shock resistances, and it is probably applied for various research fields such as photovoltaics, flexible electronics, and sensors.

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Publication details

The article was received on 18 Apr 2018, accepted on 05 Aug 2018 and first published on 08 Aug 2018


Article type: Paper
DOI: 10.1039/C8TA03573C
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    Next-generation Flexible Solid Oxide Fuel Cells with Highly Thermomechanical Stability

    O. S. Jeon, H. J. Hwang, O. C. Kwon, J. G. Lee and Y. Shul, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA03573C

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