Bubble Pressure Barriers for Molten Carbonate Fuel Cells: Materials, Properties, and In‐Cell Testing
| Autor: | Charles Dominic Iacovangelo, Bradley R. Karas |
|---|---|
| Rok vydání: | 1986 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Mineralogy Electrolyte Condensed Matter Physics Microstructure Cathode Surfaces Coatings and Films Electronic Optical and Magnetic Materials Anode Electrochemical cell law.invention Chemical engineering law Molten carbonate fuel cell Materials Chemistry Electrochemistry Molten salt Porosity |
| Zdroj: | Journal of The Electrochemical Society. 133:1595-1600 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/1.2108974 |
| Popis: | Operation of a molten carbonate fuel cell (MCFC) comprising an anode, a cathode, and a carbonate-filled electrolyte structure is often limited by the development of cracks within the electrolyte structure. This allows mixing of the anode and cathode gases and causes, at best, a deterioration in cell performance. One possible solution to this problem is to incorporate an electrolyte-filled barrier layer, i.e., a bubble pressure barrier (bpb), as an integral part of the electrode structure. Methodologies for the fabrication of anode bpb's from metal-plated ceramics and metal-oxide-impregnated layers are presented. The necessity of tailoring the bpb's physical properties, e.g., pore size distribution, porosity, and microstructure, to those of the other cell components is discussed. Molten carbonate fuel cells containing anode-bpb electrodes and hot-pressed electrolyte structures displayed improved performance relative to those without bpb's. Further, MCFC's that possessed a bpb were capable of withstanding several thermal cycles between 650/sup 0/C, the cell operating temperature, and 25/sup 0/C. The slight performance deterioration observed after a thermal cycle is explained by the formation of an internal cell across the anode-bpb composite. |
| Databáze: | OpenAIRE |
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