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Efficient reduction of CO2 in a solid oxide electrolyzer

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Author(s)

F. Bidrawn, G. Kim, G. Corre, J. T. S. Irvine, J. M. Vohs, R. J. Gorte

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Abstract

The electrolysis of CO2 has been examined in a solid oxide electrolyzer (SOE) using a ceramic electrode based on La0.8Sr0.2Cr0.5Mn0.5O3 (LSCM), infiltrated into a yttria-stabilized zirconia scaffold together with 0.5 wt % Pd supported on 5 wt % Ce0.48Zr0.48Y0.04O2. An SOE with this electrode exhibited a total cell impedance of 0.36 Ω cm2 at 1073 K for operation in CO-CO2 mixtures. An additional benefit is that the CO-CO2 electrode was shown to be redox stable, with LSCM exhibiting good conductivity in both oxidizing and reducing environments, so that the cell can operate in pure CO2. (C) 2008 The Electrochemical Society.

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Details

Original languageEnglish
Pages (from-to)B167-B170
Number of pages4
JournalElectrochemical and Solid-State Letters
Volume11
Issue number9
DOIs
Publication statusPublished - 20 Jun 2008
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    Research areas

  • SOFC ANODES, FUEL-CELLS, YSZ, PERFORMANCE, TRANSPORT, SYNGAS, OXYGEN, CERIA

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