Electrode coatings for high temperature hydrogen electrolysis |
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Authors: | W E Windes C Smith D Wendt A Erickson J Walraven P A Lessing |
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Affiliation: | (1) Idaho National Laboratory, 2351 N. Boulevard, Idaho Falls, ID 83415-2218, USA |
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Abstract: | A discussion of fabrication techniques and performance testing of solid oxide components for use in hydrogen steam electrolysis
is presented. Novel plasma spray techniques are utilized to deposit the thin ceramic oxide electrode, electrolyte, and interconnect
layers on a planar intermetallic bipolar plate. Optimal porosity is achieved within the electrode microstructure through mixed
feed techniques that are a combination of dry powder feed and liquid solution injection. The perovskite anode coatings formed
from liquid precursor feedstock require post-deposition annealing in an oxygen-rich atmosphere to form the desired perovskite
structures. Electrical conductivity measurements were measured for all electrodes and interconnect materials as a function
of temperature to 1000 °C.
Supported by the U.S. Department of Energy, Office of Nuclear Energy Science and Technology, under the DOE Idaho Operations
Contract No. DE-AC07-05ID14517 |
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