Journal article
Impedance measurements on Au microelectrodes using controlled atmosphere high temperature scanning probe microscope
Microstructures and Interfaces, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Physical Chemistry, Department of Chemistry, Technical University of Denmark4
Department of Chemistry, Technical University of Denmark5
Electrochemistry, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark6
High temperature impedance measurements on Au microelectrodes deposited on polished yttria stabilized zirconia (YSZ) pellets were demonstrated using a newly designed controlled atmosphere high temperature scanning probe microscope (CAHT-SPM). Probes based on Pt0.8Ir0.2 were fabricated and employed in all the investigations.
The electrical properties of the Au microelectrodes were investigated using CAHT-SPM at various temperatures in air. The influences of the tip-sample force and of the size of the microelectrode on the electrical properties of the Au microelectrodes were also studied. The impedance spectra of circular Au microelectrodes down to 8μm in diameter at different temperatures were successfully obtained.
The CAHT-SPM presented in this paper is capable of obtaining topography images, conductivity images and impedance spectra in-situ in a temperature range from room temperature to at least 650°C.
Language: | English |
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Year: | 2011 |
Pages: | 32-36 |
ISSN: | 18727689 and 01672738 |
Types: | Journal article |
DOI: | 10.1016/j.ssi.2011.06.017 |
ORCIDs: | Hansen, Karin Vels and Mogensen, Mogens Bjerg |
Au microelectrode Impedance spectroscopy Scanning probe microscopy Solid Oxide Fuel Cells (SOFC)