Journal of Electroceramics

, Volume 31, Issue 1–2, pp 238–244 | Cite as

Acceptor-doped ceria deposited on a porous Ni film as a possible micro-SOFC electrolyte

  • Younki Lee
  • Gyeong Man Choi


Micro-SOFCs, miniaturized solid oxide fuel cells (SOFCs) for low temperature operation, are being developed as a power source for portable electronics. Reducing the thickness of the electrolyte and the adoption of acceptor-doped ceria as an electrolyte material are important to minimize the Ohmic resistance at low temperature. Acceptor-doped ceria thin-films are often deposited on nano-porous metal substrates to reduce cracking of the thin electrolyte. However, due to the difficulty of depositing a pore-free electrolyte on a porous medium, the cells often show the low open circuit voltages (OCVs). In this study, we have deposited ∼1 μm-thick Gd-doped ceria on a nano-porous nickel film to assess whether a thin-film, metal-supported GDC can be deposited as a pore-free layer and would thus be suitable as an electrolyte of micro-SOFCs. The Ni-supported GDC cell showed an OCV of ∼0.92 V at 450 °C under a hydrogen/air gradient. The high OCV verifies that the thin-electrolyte layer, deposited on porous Ni using the pulsed laser deposition (PLD) method, is dense enough to prevent gas leakage as also observed in its microstructure.


Micro-solid oxide fuel cell Acceptor-doped ceria Open circuit voltage Thin film 



This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2011-0023389).


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Fuel Cell Research Center and Department of Materials Science and EngineeringPohang University of Science and TechnologyPohangRepublic of Korea

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