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

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dc.contributor.authorOh, Keun-Hwan-
dc.contributor.authorLee, Dongju-
dc.contributor.authorChoo, Min-Ju-
dc.contributor.authorPark, Kwang Hyun-
dc.contributor.authorJeon, Seokwoo-
dc.contributor.authorHong, Soon Hyung-
dc.contributor.authorPark, Jung-Ki-
dc.contributor.authorChoi, Jang Wook-
dc.date.accessioned2020-03-16T11:07:54Z-
dc.date.available2020-03-16T11:07:54Z-
dc.date.issued2014-05-
dc.identifier.citationACS Applied Materials and Interfaces, Vol.6 No.10, pp.7751-7758-
dc.identifier.issn1944-8244-
dc.identifier.other38564-
dc.identifier.urihttps://hdl.handle.net/10371/164627-
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.subjectboron nitride-
dc.subjectcomposite membrane-
dc.subjectdurability-
dc.subjectnanoflake-
dc.subjectpolymer electrolyte membrane fuel cell-
dc.titleEnhanced Durability of Polymer Electrolyte Membrane Fuel Cells by Functionalized 2D Boron Nitride Nanoflakes-
dc.typeArticle-
dc.contributor.AlternativeAuthor최장욱-
dc.identifier.doi10.1021/am5010317-
dc.citation.journaltitleACS Applied Materials and Interfaces-
dc.identifier.scopusid2-s2.0-84901684281-
dc.citation.endpage7758-
dc.citation.number10-
dc.citation.startpage7751-
dc.citation.volume6-
dc.identifier.urlhttps://pubs.acs.org/doi/10.1021/am5010317-
dc.identifier.rimsid38564-
dc.identifier.sci000336639200094-
dc.description.isOpenAccessN-
dc.contributor.affiliatedAuthorChoi, Jang Wook-
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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