Investigation of solid oxide electrolysis cell electrodes for methane synthesis

N. Fujiwara, R. Kikuchi, A. Takagaki, T. Sugawara, S. T. Oyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


Methane-synthesis solid oxide electrolysis cell (MS-SOEC) technology has potential to provide efficient renewable energy storage systems. However, there are few studies focusing on MSSOEC electrode materials. In this study, several materials were tested experimentally. As anode materials, La0.6Sr0.4MnO3-δ (LSM), La0.6Sr0.4Co0.2Fe0.8O3-δ-Ce0.8Sm0.2O1.9 composite (LSCF-SDC) and platinum were compared. The cell with LSCF-SDC exhibited lower overpotentials and higher stability than LSM. Platinum showed even better performance than LSCF-SDC. Ni-SDC was used for the cathode, and the cathode outlet gas compositions were analyzed for several operation temperatures and current densities. It was found that catalytic activity for methanation was enhanced under polarized conditions. Effects of ruthenium addition to the cathode were also examined. Impedance analysis combined with gas composition measurements revealed high electrochemical activity of ruthenium, while methane production was suppressed possibly due to methane reforming reactions promoted by ruthenium.

Original languageEnglish
Title of host publicationECS Transactions
EditorsS. C. Singhal, T. Kawada
PublisherElectrochemical Society Inc.
Number of pages10
ISBN (Electronic)9781607688150, 9781607688150
Publication statusPublished - May 30 2017
Externally publishedYes
Event15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017 - Hollywood, United States
Duration: Jul 23 2017Jul 28 2017

Publication series

NameECS Transactions
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862


Other15th International Symposium on Solid Oxide Fuel Cells, SOFC 2017
Country/TerritoryUnited States

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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