Publication
Characterization of MEA degradation for an open air cathode PEM fuel cell
| dc.contributor.author | Silva, R. A. | |
| dc.contributor.author | Hashimoto, T. | |
| dc.contributor.author | Thompson, G. E. | |
| dc.contributor.author | Rangel, C. M. | |
| dc.date.accessioned | 2013-04-09T14:51:29Z | |
| dc.date.available | 2013-04-09T14:51:29Z | |
| dc.date.issued | 2012 | |
| dc.description.abstract | As fuel cell technology matures and time scale to commercialization decreases, the need for a more comprehensive knowledge of materials’ aging mechanisms is essential to attain specified lifetime requirements for applications. In this work, the membrane electrode assembly (MEA) degradation of an eight-cell PEM low power stack was evaluated, during and after fuel cell aging in specified testing conditions of load-cycling that may compromise the durability of the catalyst. The stack degradation analysis comprised observation of catalytic layers, morphology and composition. Examination of the MEAs cross sections, in a joint SEM and TEM study, revealed thickness variation of catalytic layer (up to 47% for the cathode layers), and cracking, delamination, and catalyst migration were observed even though catalyst sintering and consequent loss of electrochemical active area seem to be predominant together with F loss from the ionomer used as binder in the catalytic layers. | por |
| dc.identifier.citation | Silva, R.A.; Hashimoto, T.; Thompson, G.E.; Rangel, C.M. - Characterization of MEA degradation for an open air cathode PEM fuel cell. In: International Journal of Hydrogen Energy, 2012, vol. 37, nº 8, p. 7299-7308 | por |
| dc.identifier.issn | 0360-3199 | |
| dc.identifier.uri | http://hdl.handle.net/10400.9/1751 | |
| dc.language.iso | eng | por |
| dc.publisher | Elsevier | por |
| dc.relation.publisherversion | http://dx.doi.org/10.1016/j.ijhydene.2011.12.110 | por |
| dc.subject | Hydrogen | por |
| dc.subject | PEM | por |
| dc.subject | Degradation | por |
| dc.subject | Open cathode | por |
| dc.subject | MEA failure analysis | por |
| dc.subject | Fuel cells | |
| dc.title | Characterization of MEA degradation for an open air cathode PEM fuel cell | por |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 7308 | por |
| oaire.citation.startPage | 7299 | por |
| oaire.citation.title | International Journal of Hydrogen Energy | por |
| oaire.citation.volume | 37 | por |
| person.familyName | Rangel | |
| person.givenName | Carmen M. | |
| person.identifier.ciencia-id | AA13-FF7C-9E29 | |
| person.identifier.orcid | 0000-0001-7996-8142 | |
| person.identifier.rid | D-5477-2011 | |
| person.identifier.scopus-author-id | 7006108156 | |
| rcaap.rights | openAccess | por |
| rcaap.type | article | por |
| relation.isAuthorOfPublication | 804e595a-d539-46a2-ae78-6cadc8ca9457 | |
| relation.isAuthorOfPublication.latestForDiscovery | 804e595a-d539-46a2-ae78-6cadc8ca9457 |