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Enhanced electrical conductivity in Ce0.79Gd0.20Co0.01O2-δ for low temperature solid oxide fuel cell applications
, A. Kumar, R.N. Basu
Published in
Volume: 11
Issue: 3
Pages: 699 - 701
Very high electrical conductivity of ∼0.021 S/cm at 600 °C is obtained in Ce0.79Gd0.20Co0.01O2-δ. Corresponding activation energy of conduction ∼0.43 eV measured in the temperature range of 400-700 °C is found to be notably low. Improved electrical properties with 99% of the theoretical density as obtained for these specimens, prepared using powder of average particle size ∼20 nm and subsequent sintering at 1100 °C, is considered to be a significant step to reduce the processing temperature. The measured electrical potential of ∼1 V indicates the suitability of its use as an electrolyte in electrochemical devices. © 2009 Elsevier B.V. All rights reserved.
About the journal
JournalElectrochemistry Communications