BIPOLAR PLATE OF SOLID OXIDE FUEL CELL
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United States of America Patent
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Issued Date -
Jul 2, 2009
app pub date -
Dec 22, 2008
filing date -
Dec 27, 2007
priority date (Note) -
Abandoned
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Abstract
This invention relates to a composite-material bipolar plate also known as an inter-connector of solid oxide fuel cell. The bipolar plate is constructed by a stamped sheet metal and two ceramic sealing materials as insulating grooves. The metal sheet is stamped to be with a corrugated shape, which is for collecting currents and for gas flow channels. The ceramic sealing materials as insulating grooves insolate anode and cathode electrodes and also block a leaking passage. The present invention can reduce thermal cracking conductivity and has the advantages of low cost, easy-to-make, high temperature resistance, high electric conductivity, and excellent sealing effect. In addition, the invention can shorten the start-up lag by externally preheating the metal sheet to heat up the fuel cell stack in a short period.
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