New ionic diffusion strategy to fabricate proton-conducting solid oxide fuel cells based on a stable La2Ce2O7 electrolyte

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Yihan Ling
  • Jie Chen
  • Changrong Xia
  • Ranran Peng
  • Yalin Lu

Detail(s)

Original languageEnglish
Pages (from-to)7430-7437
Journal / PublicationInternational Journal of Hydrogen Energy
Volume38
Issue number18
Publication statusPublished - 18 Jun 2013
Externally publishedYes

Abstract

A composite of NiO-BaZr0.1Ce0.7Y0.2O 3-δ (NiO-BZCY) was successfully prepared by a simple one-step-combustion process and applied as an anode for solid oxide fuel cells based on stable La2Ce2O7 (LCO) electrolyte. A high open circuit voltage of 1.00 V and a maximum power density of 315 mW cm-2 were obtained with NiO-BZCY anode and LCO electrolyte when measured at 700 C using humidified hydrogen fuel. SEM-EDX and Raman results suggested that a thin BaCeO3-based reaction layer about 5 μm in thickness was formed at the anode/electrolyte interface for Ba cations partially migrated from anode into the electrolyte film. Impedance spectra analysis showed that the activation energy for LCO conductivity differed with the anode materials, about 52.51 kJ mol-1 with NiO-BZCY anode and 95.08 kJ mol-1 with NiO-LCO anode. The great difference in these activation energies might suggest that the formed BaCeO3 reaction layer could promote the proton transferring numbers of LCO electrolyte. © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights.

Research Area(s)

  • Anode materials, Chemical stability, Electronic blocking layer, Solid oxide fuel cells

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

New ionic diffusion strategy to fabricate proton-conducting solid oxide fuel cells based on a stable La2Ce2O7 electrolyte. / Ling, Yihan; Chen, Jie; Wang, Zhenbin et al.
In: International Journal of Hydrogen Energy, Vol. 38, No. 18, 18.06.2013, p. 7430-7437.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review