Solid oxide cells (SOCs) convert chemical energy into electrical energy at high temperature with very high energy efficiency and fuel flexibility. However, repeated redox and thermal cycles in harsh environments cause mechanical deformation or crack formation under pressure derived from SOCs stacked up. Flexible ceramic components can provide SOCs with thermomechanical shock tolerance to relieve such stress and to achieve long-lasting operation. Here, a next-generation flexible SOC (F-SOC) with a bendable 3 mol% yttria-stabilized zirconia (3YSZ) electrolyte is carefully controlled by the 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, ensuring its reproducibility. The F-SOC fulfills noteworthy 4.27% degradation in on-off cycles for 500 h, producing a reasonable power output. The results described here can establish a foundation towards next-generation flexible SOCs with thermomechanical shock resistance, and they could be applied in various research fields such as photovoltaics, flexible electronics, and sensors.
Bibliographical noteFunding Information:
We acknowledge equipment offered by Ho Jung Hwang, the president of Mobienex Co., Ltd. This research was supported by the Industrial Technology Innovation Program funded by the Ministry of Trade, Industry and Energy (MOTIE), Republic of Korea (grant number 10052076) and New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) granted nancial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20173010041930). This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2017R1A6A3A03004416).
All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)