Enhanced Durability of Polymer Electrolyte Membrane Fuel Cells by Functionalized 2D Boron Nitride Nanoflakes

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dc.contributor.authorOh, Keun-Hwanko
dc.contributor.authorLee, Dongjuko
dc.contributor.authorChoo, Min-Juko
dc.contributor.authorPark, Kwang Hyunko
dc.contributor.authorJeon, Seokwooko
dc.contributor.authorHong, Soon Hyungko
dc.contributor.authorPark, Jung-Kiko
dc.contributor.authorChoi, Jang Wookko
dc.date.accessioned2014-09-04T08:29:33Z-
dc.date.available2014-09-04T08:29:33Z-
dc.date.created2014-06-30-
dc.date.created2014-06-30-
dc.date.issued2014-05-
dc.identifier.citationACS APPLIED MATERIALS & INTERFACES, v.6, no.10, pp.7751 - 7758-
dc.identifier.issn1944-8244-
dc.identifier.urihttp://hdl.handle.net/10203/189998-
dc.description.abstractWe report boron nitride nanoflakes (BNNFs), for the first time, as a nanofiller for polymer electrolyte membranes in fuel cells. Utilizing the intrinsic mechanical strength of two-dimensional (2D) BN, addition of BNNFs even at a marginal content (0.3 wt %) significantly improves mechanical stability of the most representative hydrocarbon-type (HC-type) polymer electrolyte membrane, namely sulfonated poly(ether ether ketone) (sPEEK), during substantial water uptake through repeated wet/dry cycles. For facile processing with BNNFs that frequently suffer from poor dispersion in most organic solvents, we non-covalently functionalized BNNFs with 1-pyrenesulfonic acid (PSA). Besides good dispersion, PSA supports efficient proton transport through its sulfonic functional groups. Compared to bare sPEEK, the composite membrane containing BNNF nanofiller exhibited far improved long-term durability originating from enhanced dimensional stability and diminished chronic edge failure. This study suggests that introduction of properly functionalized 2D BNNFs is an effective strategy in making various HC-type membranes sustainable without sacrificing their original adventurous properties in polymer electrolyte membrane fuel cells.-
dc.languageEnglish-
dc.publisherAMER CHEMICAL SOC-
dc.subjectPROTON-EXCHANGE MEMBRANES-
dc.subjectPOLY(ETHER ETHER KETONE)-
dc.subjectTHERMAL-CONDUCTIVITY-
dc.subjectGRAPHENE SHEETS-
dc.subjectMECHANICAL-PROPERTIES-
dc.subjectCARBON NANOTUBES-
dc.subjectEPOXY COMPOSITES-
dc.subjectWATER-
dc.subjectNANOCOMPOSITES-
dc.subjectCOPOLYMERS-
dc.titleEnhanced Durability of Polymer Electrolyte Membrane Fuel Cells by Functionalized 2D Boron Nitride Nanoflakes-
dc.typeArticle-
dc.identifier.wosid000336639200094-
dc.identifier.scopusid2-s2.0-84901684281-
dc.type.rimsART-
dc.citation.volume6-
dc.citation.issue10-
dc.citation.beginningpage7751-
dc.citation.endingpage7758-
dc.citation.publicationnameACS APPLIED MATERIALS & INTERFACES-
dc.identifier.doi10.1021/am5010317-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.contributor.localauthorJeon, Seokwoo-
dc.contributor.localauthorHong, Soon Hyung-
dc.contributor.localauthorPark, Jung-Ki-
dc.contributor.localauthorChoi, Jang Wook-
dc.contributor.nonIdAuthorPark, Kwang Hyun-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorboron nitride-
dc.subject.keywordAuthorcomposite membrane-
dc.subject.keywordAuthordurability-
dc.subject.keywordAuthornanoflake-
dc.subject.keywordAuthorpolymer electrolyte membrane fuel cell-
dc.subject.keywordPlusPROTON-EXCHANGE MEMBRANES-
dc.subject.keywordPlusPOLY(ETHER ETHER KETONE)-
dc.subject.keywordPlusMECHANICAL-PROPERTIES-
dc.subject.keywordPlusTHERMAL-CONDUCTIVITY-
dc.subject.keywordPlusGRAPHENE SHEETS-
dc.subject.keywordPlusEPOXY NANOCOMPOSITES-
dc.subject.keywordPlusCARBON NANOTUBES-
dc.subject.keywordPlusCOMPOSITES-
dc.subject.keywordPlusWATER-
dc.subject.keywordPlusCOPOLYMERS-
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