Investigation of a chemically regenerative redox cathode polymer electrolyte fuel cell using a phosphomolybdovanadate polyoxoanion catholyte

Hdl Handle:
http://hdl.handle.net/10034/620427
Title:
Investigation of a chemically regenerative redox cathode polymer electrolyte fuel cell using a phosphomolybdovanadate polyoxoanion catholyte
Authors:
Gunn, Natasha L.O.; Ward, David B.; Menelaou, Constantinos; Herbert, Matthew A.; Davies, Trevor J.
Abstract:
Chemically regenerative redox cathode (CRRC) polymer electrolyte fuel cells (PEFCs), where the direct reduction of oxygen is replaced by an in-direct mechanism occurring outside of the cell, are attractive to study as they offer a solution to the cost and durability problems faced by conventional PEFCs. This study reports the first detailed characterization of a high performance complete CRRC PEFC system, where catholyte is circulated between the cathode side of the cell and an air-liquid oxidation reactor called the “regenerator”. The catholyte is an aqueous solution of phosphomolybdovanadate polyoxoanion and is assessed in terms of its performance within both a small single cell and corresponding regenerator over a range of redox states. Two methods for determining regeneration rate are proposed and explored. Expressing the regeneration rate as a “chemical” current is suggested as a useful means of measuring re-oxidation rate with respect to the cell. The analysis highlights the present limitations to the technology and provides an indication of the maximum power density achievable, which is highly competitive with conventional PEFC systems.
Affiliation:
University of Chester
Citation:
Gunn, N. L.O., Ward, D. B., Menelaou, C., Herbert, M. A., & Davies, T. J. (2017). Investigation of a chemically regenerative redox cathode polymer electrolyte fuel cell using a phosphomolybdovanadate polyoxoanion catholyte. Journal of Power Sources, 348, 107-117. DOI: 10.1016/j.jpowsour.2017.02.048
Publisher:
Elsevier
Journal:
Journal of Power Sources
Publication Date:
6-Mar-2017
URI:
http://hdl.handle.net/10034/620427
DOI:
10.1016/j.jpowsour.2017.02.048
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0378775317302136
Type:
Article
Language:
en
ISSN:
0378-7753
Appears in Collections:
Natural Sciences

Full metadata record

DC FieldValue Language
dc.contributor.authorGunn, Natasha L.O.en
dc.contributor.authorWard, David B.en
dc.contributor.authorMenelaou, Constantinosen
dc.contributor.authorHerbert, Matthew A.en
dc.contributor.authorDavies, Trevor J.en
dc.date.accessioned2017-03-09T14:36:10Z-
dc.date.available2017-03-09T14:36:10Z-
dc.date.issued2017-03-06-
dc.identifier.citationGunn, N. L.O., Ward, D. B., Menelaou, C., Herbert, M. A., & Davies, T. J. (2017). Investigation of a chemically regenerative redox cathode polymer electrolyte fuel cell using a phosphomolybdovanadate polyoxoanion catholyte. Journal of Power Sources, 348, 107-117. DOI: 10.1016/j.jpowsour.2017.02.048en
dc.identifier.issn0378-7753-
dc.identifier.doi10.1016/j.jpowsour.2017.02.048-
dc.identifier.urihttp://hdl.handle.net/10034/620427-
dc.description.abstractChemically regenerative redox cathode (CRRC) polymer electrolyte fuel cells (PEFCs), where the direct reduction of oxygen is replaced by an in-direct mechanism occurring outside of the cell, are attractive to study as they offer a solution to the cost and durability problems faced by conventional PEFCs. This study reports the first detailed characterization of a high performance complete CRRC PEFC system, where catholyte is circulated between the cathode side of the cell and an air-liquid oxidation reactor called the “regenerator”. The catholyte is an aqueous solution of phosphomolybdovanadate polyoxoanion and is assessed in terms of its performance within both a small single cell and corresponding regenerator over a range of redox states. Two methods for determining regeneration rate are proposed and explored. Expressing the regeneration rate as a “chemical” current is suggested as a useful means of measuring re-oxidation rate with respect to the cell. The analysis highlights the present limitations to the technology and provides an indication of the maximum power density achievable, which is highly competitive with conventional PEFC systems.en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0378775317302136en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectFuel cellen
dc.subjectRegenerationen
dc.subjectChemically regenerative redox cathodeen
dc.subjectPolyoxometalateen
dc.subjectRedox flow batteryen
dc.subjectPhosphomolybdovanadate polyoxoanionen
dc.titleInvestigation of a chemically regenerative redox cathode polymer electrolyte fuel cell using a phosphomolybdovanadate polyoxoanion catholyteen
dc.typeArticleen
dc.contributor.departmentUniversity of Chesteren
dc.identifier.journalJournal of Power Sourcesen
dc.date.accepted2017-02-13-
or.grant.openaccessYesen
rioxxterms.funderKT SE 16-03 (KT project)en
rioxxterms.identifier.projectKTSE 16-03en
rioxxterms.versionAMen
rioxxterms.licenseref.startdate2019-03-06-
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