Conference paper
A Decade of Improvements for Solid Oxide Electrolysis Cells. Long-Term Degradation Rate from 40%/Kh to 0.4 % Kh
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
Fundamental Electrochemistry, Department of Energy Conversion and Storage, Technical University of Denmark6
Solid oxide electrolysis cells (SOEC) have the potential for efficient large-scale conversion from electrical energy to chemical energy stored in fuels, such as hydrogen or synthetic hydrocarbon fuels by use of well-known catalysis processes. Key issues for the break-through of this technology are to provide inexpensive, reliable, high performing and long-term stable SOEC for stack and system applications.
At DTU Energy (formerly Department of Fuel Cells and Solid State Chemistry, Risø National Laboratory), research within SOEC for more than a decade has led to long-term degradation rates on cell level being improved from 40 %/kh to 0.4 %/kh for tests at -1 A/cm2 (figure 1). In this paper, we review the key findings and highlight different performance and durability limiting factors that have been discovered, analyzed and addressed over the years to reach the tremendous increase in long-term stability for SOEC as illustrated by the cell tests in figure 1.
Language: | English |
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Year: | 2016 |
Proceedings: | PRiME 2016/230th ECS Meeting |
ISSN: | 21512043 and 21512035 |
Types: | Conference paper |
ORCIDs: | Hauch, Anne , Chen, Ming , Graves, Christopher R. , Jørgensen, Peter Stanley , Hendriksen, Peter Vang , Mogensen, Mogens Bjerg , Ovtar, Simona and Sun, Xiufu |