Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Vinothkannan, Mohanraj | - |
dc.contributor.author | Son, Byungrak | - |
dc.contributor.author | Shanmugam, Sangaraju | - |
dc.date.accessioned | 2022-10-27T08:30:06Z | - |
dc.date.available | 2022-10-27T08:30:06Z | - |
dc.date.created | 2022-04-11 | - |
dc.date.issued | 2022-04 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/16961 | - |
dc.description.abstract | Nafion, a perfluorosulfonic acid (PFSA) polymer, is a vital electrolyte that extensively contributes to the commercialization of polymer electrolyte fuel cells (PEFCs). However, adopting Nafion in high-temperature (HT) PEFCs (HT-PEFCs) is still a great challenge. Herein, we present a potential additive (carbon nitride-gadolinium zirconium oxide (gC(3)N(4)-Gd2Zr2O7)) to simultaneously extend the power density and lifetime of Nafion in HT-PEFCs. Owing to the porous nature, radical-scavenging ability, and thermal stability of gC(3)N(4)-Gd2Zr2O7, the Nafion/gC(3)N(4)-Gd2Zr2O7 membrane exhibited high water uptake, oxidative stability, and thermomechanical stability compared to the unmodified Nafion membrane. At 100 degrees C under 30% RH, the maximum power density of Nafion/gC(3)N(4)-Gd2Zr2O7 was 504 mW cm(-2) at a load current density of 804 mA cm(-2), which is 1.9 and 2.3 fold higher than that of commercial Nafion-212 and pristine Nafion membranes. Moreover, Nafion/gC(3)N(4)-Gd2Zr2O7 displays an open-circuit voltage (OCV) decay of 0.1 mV h(-1) during 515 h of continuous operation, which is significantly lower than that of the Nafion membrane during the 300 h durability operation (2.8 mV h(-1)). When increasing the operating temperature to 125 degrees C under 15% RH, the Nafion/gC(3)N(4)-Gd2Zr2O7 based PEFC largely outperforms the Nafion-212 and pristine Nafion-based PEFCs, achieving an output of 380 mW cm(-2), one of the most competitive HT-PEFC power densities reported for Nafion-based membranes. Post durability tests further ensure the superior stability of Nafion/gC(3)N(4)-Gd2Zr2O7 during HT-PEFC operation. The present study provides deep insight into developing and understanding of advanced Nafion composite membranes applicable for HT-PEFCs. | - |
dc.language | English | - |
dc.publisher | Royal Society of Chemistry | - |
dc.title | Porous gC(3)N(4)-Gd2Zr2O7 enables the high-temperature operation of Nafion membranes in polymer electrolyte fuel cells over 500 hours | - |
dc.type | Article | - |
dc.identifier.doi | 10.1039/d2ta00483f | - |
dc.identifier.wosid | 000772557500001 | - |
dc.identifier.scopusid | 2-s2.0-85127904013 | - |
dc.identifier.bibliographicCitation | Journal of Materials Chemistry A, v.10, no.16, pp.8975 - 8988 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordPlus | DURABILITY | - |
dc.subject.keywordPlus | ACID | - |
dc.subject.keywordPlus | GRAPHITIC CARBON NITRIDE | - |
dc.subject.keywordPlus | COMPOSITE MEMBRANE | - |
dc.subject.keywordPlus | NANOCOMPOSITE MEMBRANES | - |
dc.subject.keywordPlus | GRAPHENE OXIDE | - |
dc.subject.keywordPlus | LOW HUMIDITY | - |
dc.subject.keywordPlus | HYBRID MEMBRANES | - |
dc.subject.keywordPlus | FACILE SYNTHESIS | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.citation.endPage | 8988 | - |
dc.citation.number | 16 | - |
dc.citation.startPage | 8975 | - |
dc.citation.title | Journal of Materials Chemistry A | - |
dc.citation.volume | 10 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.type.docType | Article | - |
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