Editing Regenerative fuel cell (section)

A '''regenerative fuel cell''' or '''reverse fuel cell''' (RFC) is a [[fuel cell]] run in reverse mode, which consumes electricity and chemical B to produce chemical A. By definition, the process of any fuel cell could be reversed.<ref>{{cite web|url=http://ecosoul.org/files/fuelcell/fuelcell.htm |title=Reversible fuel cell learning kit |publisher=Ecosoul.org |accessdate=2009-09-24 |url-status=dead |archiveurl=https://web.archive.org/web/20080511233217/http://www.ecosoul.org/files/fuelcell/fuelcell.htm |archivedate=May 11, 2008 }}</ref> However, a given device is usually optimized for operating in one mode and may not be built in such a way that it can be operated backwards. Standard fuel cells operated backwards generally do not make very efficient systems unless they are purpose-built to do so as with [[high-pressure electrolysis|high-pressure electrolysers]],<ref>{{cite web |url=http://www.fz-juelich.de/scientific-report-2001/docs/patente/26_11600.pdf?web_session=e4af90eba1518be519b2c1b61fa42cfb |title=2001-High pressure electrolysis – The key technology for efficient H.2 |accessdate=2009-09-24 }}{{dead link|date=April 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> regenerative fuel cells, [[solid-oxide electrolyser cell]]s and [[unitized regenerative fuel cell]]s.<ref>{{cite web |url=http://gltrs.grc.nasa.gov/reports/2003/TM-2003-212739.pdf |title=Microsoft Word - E-14264 Layout.doc |accessdate=2009-09-24 |url-status=dead |archiveurl=https://web.archive.org/web/20090629233932/http://gltrs.grc.nasa.gov/reports/2003/TM-2003-212739.pdf |archivedate=2009-06-29 }}</ref>