Abstract
The cathode in solid oxide electrolysis cells is the electrode at which water and carbon dioxide can be split into hydrogen, carbon monoxide, and oxygen ions. The state-of-the-art material is a Ni cermet, as developed for solid oxide fuel cells. This electrode shows promising electrolysis rates and compatibility with adjacent cell components, and a basic understanding of its electrode processes has also been gained. However, stability issues have recently triggered a search for alternative materials. Electronically conducting oxides, with or without activation by submicron-scale electrocatalysts, are of interest because of their stability in high water contents, as described in the last part of this chapter.
Original language | English |
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Title of host publication | High-temperature electrolysis |
Subtitle of host publication | from fundamentals to applications |
Editors | Werner Sitte, Rotraut Merkle |
Place of Publication | Bristol |
Publisher | IOP Publishing Ltd. |
Chapter | 4 |
Number of pages | 24 |
ISBN (Electronic) | 9780750339513 |
ISBN (Print) | 9780750339490 |
DOIs | |
Publication status | Published - 1 Jan 2023 |