Temperature dependent performance and catalyst layer properties of PtRu supported on modified few-walled carbon nanotubes for the alkaline direct ethanol fuel cell

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Kanninen, Petri
dc.contributor.author Borghei, Maryam
dc.contributor.author Hakanpää, Janina
dc.contributor.author Kauppinen, Esko I.
dc.contributor.author Ruiz, Virginia
dc.contributor.author Kallio, Tanja
dc.date.accessioned 2017-05-11T08:21:45Z
dc.date.available 2017-05-11T08:21:45Z
dc.date.issued 2017
dc.identifier.citation Kanninen , P , Borghei , M , Hakanpää , J , Kauppinen , E I , Ruiz , V & Kallio , T 2016 , ' Temperature dependent performance and catalyst layer properties of PtRu supported on modified few-walled carbon nanotubes for the alkaline direct ethanol fuel cell ' Journal of Electroanalytical Chemistry . DOI: 10.1016/j.jelechem.2016.10.019 en
dc.identifier.issn 1572-6657
dc.identifier.issn 1873-2569
dc.identifier.other PURE UUID: 6bfe5f2d-b1ba-4135-9839-b00840f1d242
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/temperature-dependent-performance-and-catalyst-layer-properties-of-ptru-supported-on-modified-fewwalled-carbon-nanotubes-for-the-alkaline-direct-ethanol-fuel-cell(6bfe5f2d-b1ba-4135-9839-b00840f1d242).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85008938102&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/10517835/NFWCNT_Manuscript_v2_forACRIS.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/25588
dc.description.abstract The performance of PtRu on three differently modified few-walled carbon nanotube (FWCNT) supports for ethanol electro-oxidation is evaluated in alkaline media both with rotating disc electrode (RDE) and direct ethanol fuel cell (DEFC) measurements at various temperatures (0-60. °C). FWCNT are modified with oxidative treatment (O-FWCNT), aniline coating (A-FWCNT) and N-doped carbon layer (N-FWCNT). RDE testing shows that A-FWCNT/PtRu outperforms both O-FWCNT/PtRu and N-FWCNT/PtRu especially at high temperatures giving 1.5 times higher current at 60. °C. The poisoning resistance of N-FWCNT/PtRu is high over the temperature range, while O-FWCNT/PtRu and A-FWCNT/PtRu become increasingly poisoned with increasing temperature. Alkaline DEFC testing at 30. °C and 50. °C indicates similar dependence to temperature as in RDE tests. However, only N-FWCNT/PtRu can sustain currents for longer than 20-30. h during constant voltage measurement. SEM images of the catalyst layers reveal that both O-FWCNT/PtRu and A-FWCNT/PtRuform a dense structure with little pores for reactant and product transport explaining the quick performance loss, while large pores are formed with N-FWCNT/PtRu facilitating the transport. These results underline that the interactions between the catalyst support and the ionomer in the fuel cell catalyst layer are important in forming a suitable pore structure for efficient mass transfer. en
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Journal of Electroanalytical Chemistry en
dc.rights openAccess en
dc.subject.other Analytical Chemistry en
dc.subject.other Chemical Engineering(all) en
dc.subject.other Electrochemistry en
dc.subject.other 116 Chemical sciences en
dc.title Temperature dependent performance and catalyst layer properties of PtRu supported on modified few-walled carbon nanotubes for the alkaline direct ethanol fuel cell en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Chemistry
dc.contributor.department Department of Forest Products Technology
dc.contributor.department Aalto University
dc.contributor.department Department of Applied Physics
dc.subject.keyword Alkaline electrolyte
dc.subject.keyword Catalyst layer
dc.subject.keyword Direct ethanol fuel cell
dc.subject.keyword Ethanol
dc.subject.keyword Few-walled carbon nanotube
dc.subject.keyword Nitrogen
dc.subject.keyword Analytical Chemistry
dc.subject.keyword Chemical Engineering(all)
dc.subject.keyword Electrochemistry
dc.subject.keyword 116 Chemical sciences
dc.identifier.urn URN:NBN:fi:aalto-201705113972
dc.identifier.doi 10.1016/j.jelechem.2016.10.019
dc.date.embargo info:eu-repo/date/embargoEnd/2018-10-12


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