| In an electrochemical process fuel cells
transform hydrogen in heat - and in electrical power.
The fuel cell system of Hexis extracts hydrogen from
natural gas and is based on the high temperature fuel
cell technology (SOFC - Solid Oxide Fuel Cell). |
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Electrochemical process
The pre-reformed gaseous mixture of hydrogen and carbon
monoxide oxidizes at the anode. On this occasion electrons
are released that are then conducted on the cathode
by an electrical conductor outside the fuel cell. At
the cathode a part of the air oxygen is reduced with
the released electrons which produces oxygen ions.
At an operating temperature of between 900 and 1000° centigrade
these are carried through the now ion conductible electrolyte.
At the anode end these ions recombine with the oxidized
fuel to water vapour and carbon dioxide. The electrons
that are conducted from the anode to the cathode are
used as electrical power on that occasion. |
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| Electrochemical process
of the SOFC |
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