Apparatus for integrated water deionization, electrolytic hydrogen production, and electrochemical power generation
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United States of America Patent
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May 27, 2003
Grant Date -
Feb 14, 2002
app pub date -
Jun 5, 2001
filing date -
Jun 5, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention is directed to an apparatus and method for deionization and hydrogen fuel production in a fuel generation mode, and electricity production in a power generation mode. In one embodiment, a capacitive deionization (CDI) device receives water and electrical energy to produce deionized water that is transferred to a proton electrode membrane electrolysis (PEME) device to produce hydrogen fuel by electrolysis. A storage system receives the hydrogen. The hydrogen is transferred from the storage system to a proton electrode membrane fuel cell (PEMFC) device that produces electrical energy. In another embodiment, the PEME and the PEMFC are functionally combined in a unitary regenerative fuel cell (URFC). In still another embodiment, a humidification unit and the CDI are functionally combined. In yet another embodiment, a CDI, URFC and the humidification unit are combined in a single unitary assembly.
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