4.6 Article

A robust symmetrical electrode with layered perovskite structure for direct hydrocarbon solid oxide fuel cells: PrBa0.8Ca0.2Mn2O5+delta

Journal

JOURNAL OF MATERIALS CHEMISTRY A
Volume 4, Issue 5, Pages 1747-1753

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta08878j

Keywords

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Funding

  1. Mid-career Researcher Program through the National Research Foundation of Korea - Ministry of Science, ICT and Future Planning [NRF-2013R1A2A2A04015706, NRF-2015R1A2A1A10055886, 2011-0010773]
  2. Basic Science Research Program through the National Research Foundation of Korea - Ministry of Science, ICT and Future Planning [2012R1A1A1013380]

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Symmetrical solid oxide fuel cells (SOFCs), where the same material is used as both the anode and the cathode, have gained increasing attention due to a number of attractive benefits compared to the conventional SOFC such as a simplified fabrication procedure, reduced processing costs, minimized compatibility issues, as well as enhanced stability and reliability. Since the anode is in a reducing environment while the cathode is in an oxidizing environment, the symmetrical SOFC electrode should be chemically and structurally stable in both environments. Herein, we propose a highly stable symmetrical SOFC electrode, a layered perovskite Ca doped PrBaMn2O5+delta (PBCMO). The electrical conductivity of this electrode is very high in a reducing atmosphere and suitable in an oxidizing atmosphere. Furthermore, the PBCMO symmetrical electrode demonstrates excellent electrochemical performance and durability in various hydrocarbon fuels as well as hydrogen.

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