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Improvement of cathode–electrolyte interfaces of tubular solid oxide fuel cells by fabricating dense YSZ electrolyte membranes with indented surfaces
- Source :
- Journal of Power Sources. 175:201-205
- Publication Year :
- 2008
- Publisher :
- Elsevier BV, 2008.
-
Abstract
- To improve cathode–electrolyte interfaces of solid oxide fuel cells (SOFCs), dense YSZ electrolyte membranes with indented surfaces were fabricated on tubular NiO/YSZ anode supports by two comparable methods. Electrochemistry impedance spectroscopy (EIS) and current–voltage tests of the cells were carried out to characterize the cathode–electrolyte interfaces. Results showed that the electrode polarization resistances of the modified cells were reduced by 52% and 35% at 700 °C, and the maximum power densities of cells were remarkably increased, even by 146.6% and 117.8% at lower temperature (700 °C), respectively. The indented surfaces extended the active zone of cathode and enhanced interfacial adhesion, which led to the major improvement in the cell performance.
- Subjects :
- Materials science
Renewable Energy, Sustainability and the Environment
Oxide
Analytical chemistry
Energy Engineering and Power Technology
Electrolyte
Electrochemistry
Cathode
Dielectric spectroscopy
Anode
law.invention
chemistry.chemical_compound
Membrane
chemistry
Chemical engineering
law
Solid oxide fuel cell
Electrical and Electronic Engineering
Physical and Theoretical Chemistry
Subjects
Details
- ISSN :
- 03787753
- Volume :
- 175
- Database :
- OpenAIRE
- Journal :
- Journal of Power Sources
- Accession number :
- edsair.doi...........cb5799f04b3344c73209f67f5ba5f2eb