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

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.

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
MATERIALS RESEARCH BULLETIN no. 135,
ISSN: 0025-5408
Language:
English
Publication year:
2021
Bibliographic description:
Skubida W., Zheng K., Stępień A., Świerczek K., Klimkowicz A.: SrCe0.9In0.1O3-δ-based reversible symmetrical Protonic Ceramic Cell// MATERIALS RESEARCH BULLETIN -Vol. 135, (2021), s.111154-
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.materresbull.2020.111154
Verified by:
Gdańsk University of Technology

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