Advancing direct liquid redox fuel cells: mixed-reactant and in situ regeneration opportunities

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DOIResolve DOI: http://doi.org/10.1149/1.3308569
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TypeArticle
Journal titleJournal of The Electrochemical Society
ISSN0013-4651
Volume157
Issue4
PagesB529B535
Subjectcarbon; direct methanol fuel cells; electrochemical electrodes; electrolytes; iron; oxidation; reduction (chemical)
AbstractTwo approaches pertaining to the direct liquid redox fuel cell (DLRFC) have been investigated and demonstrated: mixed-reactant operation and in situ regeneration of the redox couple. The former involves supplying a mixed methanol Fe2+/Fe3+ redox electrolyte to the selective carbon cathode of the DLRFC and supplying the fuel to the anode via methanol crossover. This approach has the potential to significantly improve the cost, compactness, and volumetric and gravimetric power densities of the cell. The latter in situ regeneration approach involves substituting the fuel supply with air to spontaneously reverse the direction of electron flow in a DLRFC, which eliminates the need for an auxiliary regeneration unit and reduces the overall cost and complexity of a DLRFC system. Both modes of DLRFC operation, discharge, and regeneration, produce power that is unique compared to conventional systems.
Publication date
PublisherElectrochemical Society
LanguageEnglish
AffiliationNRC Institute for Fuel Cell Innovation; National Research Council Canada
Peer reviewedYes
NPARC number23001801
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Record identifier79c57020-7866-4c25-8d98-848724fa2053
Record created2017-04-07
Record modified2017-04-07
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