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Energy storage using an REP with an engine

Patent ·
OSTI ID:1651008
An energy storage system includes a power plant configured to generate an exhaust gas comprising carbon dioxide. The energy storage system further includes a first fuel cell configured to operate in reverse as an electrolyzer. The first fuel cell is configured to receive at least a portion of the exhaust gas from the power plant. An anode is configured to receive carbon dioxide via the exhaust gas and methane from a separate feed, and the anode is configured to output a hydrogen-containing gas mixture. The energy storage system further includes a reformer configured to methanate the hydrogen-containing gas mixture to convert substantially all of the carbon monoxide in the hydrogen-containing gas mixture to methane. The energy storage system further includes a second fuel cell operating in reverse as a hydrogen pump, the second fuel cell configured to separate hydrogen from a gas mixture output by the reformer.
Research Organization:
FuelCell Energy, Inc., Danbury, CT (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0006669
Assignee:
FuelCell Energy, Inc. (Danbury, CT)
Patent Number(s):
10,680,265
Application Number:
15/980,305
OSTI ID:
1651008
Country of Publication:
United States
Language:
English

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