Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Sahu, Akhila Kumar | - |
dc.contributor.author | Ketpang, Kriangsak | - |
dc.contributor.author | Shanmugam, Sangaraju | - |
dc.contributor.author | Kwon, Osung | - |
dc.contributor.author | Lee, Sangcheol | - |
dc.contributor.author | Kim, Hasuck | - |
dc.date.available | 2017-07-05T08:36:15Z | - |
dc.date.created | 2017-04-10 | - |
dc.date.issued | 2016-07-28 | - |
dc.identifier.issn | 1932-7447 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/2232 | - |
dc.description.abstract | Sulfonic acid-functionalized graphene (S-graphene) is employed as a promising inorganic filler as well as a solid acid proton conducting medium to realize a composite membrane with Nafion for polymer electrolyte fuel cell (PEFC) applications under reduced relative humidity (RH). The functionalization of graphene is performed by sulfonic acid-containing aryl radicals to increase the number of sulfonate groups per unit volume of a domain. A Nafion-S-graphene composite membrane is obtained by embedding S-graphene in Nafion, which provides high absorption of water and fast proton-transport across the electrolyte membrane under low RH values. The proton conductivity of the Nafion-S-graphene (1%) composite membrane at 20% RH is 17 mS cm-1, which is five times higher than that of a pristine recast Nafion membrane. PEFCs incorporating the Nafion-S-graphene composite membrane deliver a peak power density of 300 mW cm-2 at a load current density of 760 mA cm-2 while operating at optimum temperature of 70 °C under 20% RH and ambient pressure. By contrast, operating under identical conditions, a peak power density of 220 mW cm-2 is achieved with the pristine recast Nafion membrane. The Nafion-S-graphene composite membrane could be used to address many critical problems associated with commercial Nafion membranes in fuel cell applications. © 2016 American Chemical Society. | - |
dc.publisher | American Chemical Society | - |
dc.title | Sulfonated Graphene-Nafion Composite Membranes for Polymer Electrolyte Fuel Cells Operating under Reduced Relative Humidity | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acs.jpcc.5b11674 | - |
dc.identifier.scopusid | 2-s2.0-84979942213 | - |
dc.identifier.bibliographicCitation | Journal of Physical Chemistry C, v.120, no.29, pp.15855 - 15866 | - |
dc.subject.keywordPlus | Composite Membranes | - |
dc.subject.keywordPlus | Electrolyte Membrane | - |
dc.subject.keywordPlus | Electrolytes | - |
dc.subject.keywordPlus | Filled Polymers | - |
dc.subject.keywordPlus | Fuel Cell Application | - |
dc.subject.keywordPlus | Fuel Cells | - |
dc.subject.keywordPlus | Functionalization | - |
dc.subject.keywordPlus | Graphene | - |
dc.subject.keywordPlus | GRAPHITE NANOCOMPOSITES | - |
dc.subject.keywordPlus | HIGH-TemPERATURE | - |
dc.subject.keywordPlus | HYBRID MemBRANES | - |
dc.subject.keywordPlus | Hydrogen | - |
dc.subject.keywordPlus | Identical Conditions | - |
dc.subject.keywordPlus | MemBRANES | - |
dc.subject.keywordPlus | Nafion Composite Membranes | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | Peak Power Densities | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | Polyelectrolytes | - |
dc.subject.keywordPlus | Polymer Electrolyte Fuel Cell Applications | - |
dc.subject.keywordPlus | Polymer Electrolyte Fuel Cells | - |
dc.subject.keywordPlus | PROTON-EXCHANGE MemBRANES | - |
dc.subject.keywordPlus | Proton Exchange Membrane Fuel Cells (PemFC) | - |
dc.subject.keywordPlus | Solid Electrolytes | - |
dc.subject.keywordPlus | Sulfonic ACID-Functionalized | - |
dc.subject.keywordPlus | TRANSPORT | - |
dc.subject.keywordPlus | Water Absorption | - |
dc.subject.keywordPlus | Water Management | - |
dc.citation.endPage | 15866 | - |
dc.citation.number | 29 | - |
dc.citation.startPage | 15855 | - |
dc.citation.title | Journal of Physical Chemistry C | - |
dc.citation.volume | 120 | - |
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