SrCe0.9In0.1O3-δ-based reversible symmetrical Protonic Ceramic Cell

Wojciech Skubida, Kun Zheng, Anna Stępień, Konrad Świerczek, Alicja Klimkowicz

Research output: Contribution to journalArticlepeer-review

Abstract

In-doped SrCe0.9In0.1O3-δ (SCI) perovskite-type oxide is utilized as the solid electrolyte, as well as a component, together with SrFe0.75Mo0.25O3-δ (SFM) compound, in the composite-type electrodes to construct symmetrical Protonic Ceramic Fuel Cells (PCFC). With good mutual stability of SCI and SFM at high temperatures in water vapor-containing reducing and oxidizing conditions, as well as sufficient ionic conductivity with high proton transference number of SrCe0.9In0.1O3-δ, and high electronic conduction of SrFe0.75Mo0.25O3-δ, effectiveness of the electrochemical reactions is ensured. It is documented that 80:20 wt.% SFM-SCI electrode performs better, comparing to the one having 50:50 wt.% ratio of both compounds, with both electrodes showing lower polarization resistance values in the reducing conditions. Symmetrical SCI-SFM|SCI|SCI-SFM cells can be operated in normal (PCFC) and reversed, Protonic Ceramic Electrolyzer Cell (PCEC) mode, showing similar shape of current density-voltage characteristics. The maximum obtained power density is 32 mW cm−2 at 800 °C.

Original languageEnglish
Article number111154
JournalMaterials Research Bulletin
Volume135
DOIs
Publication statusPublished - 2021 Mar

Keywords

  • Proton-conducting perovskites
  • Protonic Ceramic Electrolyzer Cells
  • Protonic Ceramic Fuel Cells
  • Symmetrical solid oxide cells

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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