Tailored Syngas via High Temperature H2O-CO2 Co-Electrolysis
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
This project has developed a new testing capability at PNNL and has evaluated solid oxide electrolysis cell (SOEC) materials for the ability to co-electrolyze carbon dioxide and steam to produce synthesis gas. CO2-H2O co-electrolysis, the simultaneous electrochemical reduction of carbon dioxide and steam, was performed on the porous Ni-based electrodes in high temperature SOECs. Experiments were conducted using small button cells and the rate of the electrochemical reactions was measured at 750°C for varied reactant compositions: 10-98%CO2 and 5-50% H2O, also in the presence of some H2 and CO to ensure reducing environment and avoid Ni oxidation.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 2403089
- Report Number(s):
- PNNL--29240
- Country of Publication:
- United States
- Language:
- English
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