We have fabricated nano-scale gadolinia-doped ceria (GDC) at the electrode-electrolyte boundary by aerosol-assisted chemical vapor deposition (AACVD) for high-performance solid oxide fuel cells (SOFCs) working at low temperatures below 500 °C. In AACVD, temperature is the key factor affecting the grain size. We have confirmed that by nano-granulizing the electrolyte surface using optimized AACVD, the power output of the SOFC is 50% higher than that of the bare GDC SOFC. From the impedance analysis, significant enhancement of the cathodic oxygen reduction reaction is identified from the AACVD-GDC nano-grain surface treatment.
Bibliographical noteFunding Information:
This research was supported by the International Research & Development Program of the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (Grant No. NRF-2014K1A3A1A47067412 ). The Brain Korea 21 Plus program ( 21A20131712520 ) is also acknowledged for their support..
© 2015 Published by Elsevier B.V.
- Aerosol-assisted chemical vapor deposition
- Ceramic thin films
- Gadolinia-doped ceria
- Grain boundaries
- Solid oxide fuel cells
- Surface modification
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering