Compositional optimization of ceramic composite electrodes without metal catalysts for steam and CO2 electrolysis
Source abstract
Abstract
Abstract Several cathode materials for solid oxide fuel cells with mixed electronic and ionic conductivity were applied to the feed-side electrode for steam and CO2 electrolysis; the feed-side electrode was exposed to a reducing atmosphere and carbon dioxide, and the feasibility of using a ceramic composite electrode without any metal catalysts was investigated. Ceramic composite electrodes composed of La0.8Sr0.2FeO3 (LSF), or La0.8Sr0.2MnO3 (LSM) were fabricated using the infiltration method. LSF showed good chemical stability but low electrical conductivity in co-electrolysis mode. LSM showed a good electrical conductivity, but its chemical stability was poor in co-electrolysis mode. Good chemical stability, high electrical conductivity, and good electrode performance could be obtained from a solid solution of LSF and LSM (La0.8Sr0.2Mn0.5Fe0.5O3, LSMF). The electrode performance of LSMF was almost twice as good as that of La0.8Sr0.2Cr0.5Mn0.5O3 (LSCM).
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Chemical Looping and Thermochemical Processes · Catalysis and Oxidation Reactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (20)
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1. Results of recent high temperature coelectrolysis studies at the Idaho National Laboratory10.1016/j.ijhydene.2008.08.029 ↗
2. Sustainable hydrocarbon fuels by recycling CO2 and H2O with renewable or nuclear energy10.1016/j.rser.2010.07.014 ↗
3. Syngas and synfuels from H2O and CO2: current status10.1002/cite.201400090 ↗
4. Coelectrolysis of steam and CO2 in a solid oxide electrolysis cell with ceramic composite electrodes10.1016/j.ijhydene.2014.01.124 ↗
5. Improvements in co-electrolysis performance and long-term stability of solid oxide electrolysis cells based on ceramic composite cathodes10.1016/j.ijhydene.2015.08.012 ↗
6. Effects of metal catalysts on co-electrolysis of steam and carbon dioxide10.1149/2.1321610jes ↗
7. (La,Sr)(Cr,Mn)O3/GDC cathode for high temperature steam electrolysis and steam-carbon dioxide co-electrolysis10.1016/j.ssi.2012.06.015 ↗
8. Rational selection of MIEC materials in energy production processes10.1016/j.ces.2012.10.027 ↗
9. Long-term tests of a Jülich planar short stack with reversible solid oxide cells in both fuel cell and electrolysis modes10.1016/j.ijhydene.2013.01.192 ↗
10. Co-electrolysis of steam and carbon dioxide in solid oxide cells10.1149/2.076208jes ↗
11. Restructuring porous YSZ by treatment in hydrofluoric acid for use in SOFC cathodes10.1111/j.1551-2916.2010.04359.x ↗
12. Cathode materials for solid oxide fuel cells: a review10.1007/s10008-009-0932-0 ↗
13. High-performance SOFC cathodes prepared by infiltration10.1002/adma.200802428 ↗
14. A review of AC impedance modeling and validation in SOFC diagnosis10.1016/j.electacta.2007.05.071 ↗
15. Limitations of charge-transfer models for mixed-conducting oxygen electrodes10.1016/S0167-2738(00)00423-9 ↗
16. Correlation between thermal expansion and oxide ion transport in mixed conducting perovskite-type oxides for SOFC cathodes10.1016/S0167-2738(00)00770-0 ↗
17. Clarifying the Butler–Volmer equation and related approximations for calculating activation losses in solid oxide fuel cell models10.1016/j.jpowsour.2005.03.174 ↗
18. A method to separate process contributions in impedance spectra by variation of test conditions10.1149/1.2790791 ↗
19. Detailed characterization of anode-supported SOFCs by impedance spectroscopy10.1149/1.2433311 ↗
20. Electrochemical characterization of Ni–yttria stabilized zirconia electrode for hydrogen production in solid oxide electrolysis cells10.1016/j.jpowsour.2013.05.033 ↗