Highly Efficient Electrochemical Reforming of CH₄/CO₂ in a Solid Oxide Electrolyser

Author(s)

Jinhai Lu
Changli Zhu
Changchang Pan
Wenlie Lin
John P. Lemmon
Fanglin Chen, University of South CarolinaFollow
Chunsen Li
Kui Xie

Document Type

Article

Abstract

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.

Digital Object Identifier (DOI)

https://doi.org/10.1126/sciadv.aar5100

Publication Info

Published in Electrochemistry, Volume 4, Issue 3, 2018.

© 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

APA Citation

Lu, J., Zhu, C., Pan, C., Lin, W., Lemmon, J. P., Chen, F., Li, C., & Xie, K. (2018). Highly efficient electrochemical reforming of CH4 /CO2 in a solid oxide electrolyser. Science Advances, 4(3). https://doi.org/10.1126/sciadv.aar5100

Rights

© 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.