Conference paper · Journal article
A Decade of Solid Oxide Electrolysis Improvements at DTU Energy
Department of Energy Conversion and Storage, Technical University of Denmark1
Applied Electrochemistry, Department of Energy Conversion and Storage, Technical University of Denmark2
Ceramic Engineering & Science, Department of Energy Conversion and Storage, Technical University of Denmark3
Mixed Conductors, Department of Energy Conversion and Storage, Technical University of Denmark4
Imaging and Structural Analysis, Department of Energy Conversion and Storage, Technical University of Denmark5
Solid oxide electrolysis cells (SOECs) can efficiently convert electrical energy (e.g. surplus wind power) to energy stored in fuels such as hydrogen or other synthetic fuels. Performance and durability of the SOEC has increased orders of magnitudes within the last decade. This paper presents a short review of the R&D work on SOEC single cells conducted at DTU Energy from 2005 to 2015.
The SOEC improvements have involved increasing the of the oxygen electrode performance, elimination of impurities in the feed streams, optimization of processing routes, and fuel electrode structure optimization. All together, these improvements have led to a decrease in long-term degradation rate from ∼40 %/kh to ∼0.4 %/kh for steam electrolysis at -1 A/cm2, while the initial area specific resistance has been decreased from 0.44 Ωcm2 to 0.15 Ωcm2 at -0.5 A/cm2 and 750 °C.
Language: | English |
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Publisher: | The Electrochemical Society |
Year: | 2017 |
Pages: | 3-14 |
Proceedings: | PRiME 2016/230th ECS Meeting |
ISSN: | 19385862 and 19386737 |
Types: | Conference paper and Journal article |
DOI: | 10.1149/07542.0003ecst |
ORCIDs: | Hauch, Anne , Chen, Ming , Graves, Christopher R. , Jørgensen, Peter Stanley , Hendriksen, Peter Vang , Mogensen, Mogens Bjerg , Ovtar, Simona and Sun, Xiufu |