1. Route to High-Performance Micro-solid Oxide Fuel Cells on Metallic Substrates
- Author
-
Wells, Matthew P., Lovett, Adam J., Chalklen, Thomas, Baiutti, Federico, Tarancon, Albert, Wang, Xuejing, Ding, Jie, Wang, Haiyan, Kar-Narayan, Sohini, Acosta, Matias, MacManus-Driscoll, Judith L., Wells, Matthew P [0000-0003-2632-0160], Baiutti, Federico [0000-0001-9664-2486], Tarancón, Albert [0000-0002-1933-2406], Wang, Haiyan [0000-0002-7397-1209], Kar-Narayan, Sohini [0000-0002-8151-1616], and Apollo - University of Cambridge Repository
- Subjects
Materials science ,metallic substrate ,Silicon ,high-performance ,Oxide ,chemistry.chemical_element ,FOS: Physical sciences ,02 engineering and technology ,Substrate (electronics) ,Applied Physics (physics.app-ph) ,010402 general chemistry ,01 natural sciences ,7. Clean energy ,Pulsed laser deposition ,chemistry.chemical_compound ,commercially viable ,Etching ,solid oxide fuel cell ,General Materials Science ,epitaxial thin film ,Thin film ,Condensed Matter - Materials Science ,Nanocomposite ,business.industry ,Materials Science (cond-mat.mtrl-sci) ,Physics - Applied Physics ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,chemistry ,Optoelectronics ,Solid oxide fuel cell ,0210 nano-technology ,business ,Research Article - Abstract
Micro-solid oxide fuel cells based on thin films have strong potential for use in portable power devices. However, devices based on silicon substrates typically involve thin-film metallic electrodes which are unstable at high temperatures. Devices based on bulk metal substrates overcome these limitations, though performance is hindered by the challenge of growing state-of-the-art epitaxial materials on metals. Here, we demonstrate for the first time the growth of epitaxial cathode materials on metal substrates (stainless steel) commercially supplied with epitaxial electrolyte layers (1.5 {um (Y2O3)0.15(ZrO2)0.85 (YSZ) + 50 nm CeO2). We create epitaxial mesoporous cathodes of (La0.60Sr0.40)0.95Co0.20Fe0.80O3 (LSCF) on the substrate by growing LSCF/MgO vertically aligned nanocomposite films by pulsed laser deposition, followed by selectively etching out the MgO. To enable valid comparison with the literature, the cathodes are also grown on single-crystal substrates, confirming state-of-the-art performance with an area specific resistance of 100ohmegacm2 at 500dC and activation energy down to 0.97 eV. The work marks an important step toward the commercialization of high-performance micro-solid oxide fuel cells for portable power applications.
- Published
- 2021