Journal article · Conference paper
Performance and Durability of Solid Oxide Electrolysis Cells for Syngas Production
Department of Energy Conversion and Storage, Technical University of Denmark1
Applied Electrochemistry, Department of Energy Conversion and Storage, Technical University of Denmark2
Mixed Conductors, Department of Energy Conversion and Storage, Technical University of Denmark3
Fundamental Electrochemistry, Department of Energy Conversion and Storage, Technical University of Denmark4
Performance and durability of Ni/YSZ based solid oxide electrolysis cells (SOECs) for co-electrolysis of H2O and CO2 at high current density were investigated. The cells consist of a Ni/YSZ support, a Ni/YSZ fuel electrode, a YSZ electrolyte, and a LSM-YSZ oxygen electrode. The cell durability was examined at 800°C and electrolysis current density of -1 or -1.5 A/cm2 with 60% reactant (H2O+CO2) utilization.
The cell voltage degradation showed a strong dependence on the electrolysis current density, with an overall cell voltage degradation rate of 0.24 mV/h at -1 A/cm2 and of 0.82 mV/h at -1.5 A/cm2. Electrochemical characterization of the cells showed that the degradation was mainly related to the LSM/YSZ electrode when operated at -1 A/cm2, whereas at increased current density (-1.5 A/cm2), both the Ni/YSZ and LSM/YSZ electrodes showed degradation.
| Language: | English |
|---|---|
| Publisher: | The Electrochemical Society |
| Year: | 2012 |
| Pages: | 77-85 |
| Proceedings: | 220th ECS Meeting |
| ISSN: | 19386737 and 19385862 |
| Types: | Journal article and Conference paper |
| DOI: | 10.1149/1.3702414 |
| ORCIDs: | Sun, Xiufu , Chen, Ming , Mogensen, Mogens Bjerg and Hendriksen, Peter Vang |
