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Highly efficient electrochemical reforming of CH 4 /CO 2 in a solid oxide electrolyser
- Source :
- Science Advances
- Publication Year :
- 2018
- Publisher :
- American Association for the Advancement of Science (AAAS), 2018.
-
Abstract
- Electrochemical reforming of CH4/CO2 is demonstrated in a solid oxide electrolyser.<br />Reforming CH4 into syngas using CO2 remains a fundamental challenge due to carbon deposition and nanocatalyst instability. We, for the first time, demonstrate highly efficient electrochemical reforming of CH4/CO2 to produce syngas in a solid oxide electrolyser with CO2 electrolysis in the cathode and CH4 oxidation in the anode. In situ exsolution of an anchored metal/oxide interface on perovskite electrode delivers remarkably enhanced coking resistance and catalyst stability. In situ Fourier transform infrared characterizations combined with first principle calculations disclose the interface activation of CO2 at a transition state between a CO2 molecule and a carbonate ion. Carbon removal at the interfaces is highly favorable with electrochemically provided oxygen species, even in the presence of H2 or H2O. This novel strategy provides optimal performance with no obvious degradation after 300 hours of high-temperature operation and 10 redox cycles, suggesting a reliable process for conversion of CH4 into syngas using CO2.
- Subjects :
- Materials science
Materials Science
Oxide
02 engineering and technology
010402 general chemistry
Electrochemistry
7. Clean energy
01 natural sciences
Redox
Catalysis
law.invention
chemistry.chemical_compound
law
Research Articles
Electrolysis
Multidisciplinary
SciAdv r-articles
021001 nanoscience & nanotechnology
Cathode
0104 chemical sciences
Anode
Chemical engineering
chemistry
0210 nano-technology
Research Article
Syngas
Subjects
Details
- ISSN :
- 23752548
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- Science Advances
- Accession number :
- edsair.doi.dedup.....6efab2f481c07b4c35d338c23e036541