Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ranganathan, Hariprasad | - |
dc.contributor.author | Vinothkannan, Mohanraj | - |
dc.contributor.author | Kim, Ae Rhan | - |
dc.contributor.author | Subramanian, Vijayapradeep | - |
dc.contributor.author | Oh, Min-Suk | - |
dc.contributor.author | Yoo, Dong Jin | - |
dc.date.accessioned | 2022-11-30T17:10:11Z | - |
dc.date.available | 2022-11-30T17:10:11Z | - |
dc.date.created | 2022-03-18 | - |
dc.date.issued | 2022-06 | - |
dc.identifier.issn | 0363-907X | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/17201 | - |
dc.description.abstract | Herein, we describe the incorporation of cerium oxide-coated amine-functionalized titania nanorods (CeO2-ATiO(2)) as a bifunctional nanofiller in sulfonated poly(ether ether ketone) (SPEEK) as a cost-effective and high-performance proton exchange membrane (PEM) for PEM fuel cells (PEMFCs). Facile and effective functionalization of TiO2 was performed using amine-containing organic moieties, followed by coating the ATiO(2) nanorods with CeO2. A simple solution casting method was employed to incorporate CeO2-ATiO(2) into the SPEEK matrix with various weight ratio of 0.5%, 1%, 2%, 4%, or 6%. The successful incorporation of prepared nanofiller in the SPEEK membrane matrix was confirmed by structural and morphological studies such as Fourier transform infrared, X-ray diffractometer, scanning electron microscopy, and atomic force microscope of the SPEEK/CeO2-ATiO(2) composite membranes. The presence of ATiO(2) improved proton conductivity while CeO2 alleviated the chemical degradation of the membrane by scavenging free radicals. The proton conductivity of an SPEEK/CeO2-ATiO(2) (2 wt%) nanocomposite membrane at 60 degrees C under 20% relative humidity (RH) was 17.06 mS cm(-1) whereas that of a bare SPEEK membrane under the same conditions was only 4.53 mS cm(-1). PEMFCs containing SPEEK/CeO2-ATiO(2) (2 wt%) nanocomposite membrane attained a maximum power density of 117 mW cm(-2) at a load current density of 371 mA/cm(2) at 60 degrees C under 100% RH. In contrast, a PEMFC containing the bare SPEEK membrane delivered a power density of 91 mW cm(-2) at a load current of 253 mA cm(-2). A single cell open circuit voltage (OCV) test to examine the durability of membranes revealed that a PEMFC with an SPEEK/CeO2-ATiO(2) (2 wt%) membrane showed excellent stability with an OCV decay of 0.925 mV h(-1) at 60 degrees C under 30% RH, whereas that of a PEMFC with a bare SPEEK membrane was 3.437 mV h(-1) under identical conditions. Based on the abovementioned results, it is found that the SPEEK/CeO2-ATiO(2) nanocomposite membranes overcome the durability issues of pristine SPEEK membranes and show enhanced electrochemical performance under a harsh PEMFC environment. Highlights CeO2-ATiO(2) was utilized as a bifunctional filler to fabricate composite membrane. Integration of CeO2-ATiO(2) improved the proton conductivity of sulfonated poly(ether ether ketone) (SPEEK) under low relative humidity. Addition of CeO2-ATiO(2) to SPEEK resulted in improved physiochemical and thermomechanical properties. Optimized SPEEK/CeO2-ATiO(2) (2 wt%) exhibited improved proton exchange membrane fuel cell performance while retaining excellent durability compared to pristine SPEEK. | - |
dc.language | English | - |
dc.publisher | John Wiley & Sons Inc. | - |
dc.title | Simultaneous improvement of power density and durability of sulfonated poly(ether ether ketone) membrane by embedding CeO2-ATiO(2): A comprehensive study in low humidity proton exchange membrane fuel cells | - |
dc.type | Article | - |
dc.identifier.doi | 10.1002/er.7781 | - |
dc.identifier.wosid | 000764966700001 | - |
dc.identifier.scopusid | 2-s2.0-85125576510 | - |
dc.identifier.bibliographicCitation | International Journal of Energy Research, v.46, no.7, pp.9041 - 9057 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordAuthor | power density | - |
dc.subject.keywordAuthor | radical scavenger | - |
dc.subject.keywordAuthor | durability | - |
dc.subject.keywordAuthor | hybrid membranes | - |
dc.subject.keywordAuthor | PEMFC | - |
dc.subject.keywordPlus | POLYMER ELECTROLYTE MEMBRANES | - |
dc.subject.keywordPlus | COMPOSITE MEMBRANES | - |
dc.subject.keywordPlus | GRAPHENE OXIDE | - |
dc.subject.keywordPlus | NAFION MATRIX | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | FILLER | - |
dc.subject.keywordPlus | CONDUCTIVITY | - |
dc.subject.keywordPlus | NANOTUBES | - |
dc.subject.keywordPlus | HYBRID | - |
dc.citation.endPage | 9057 | - |
dc.citation.number | 7 | - |
dc.citation.startPage | 9041 | - |
dc.citation.title | International Journal of Energy Research | - |
dc.citation.volume | 46 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Energy & Fuels; Nuclear Science & Technology | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels; Nuclear Science & Technology | - |
dc.type.docType | Article | - |
There are no files associated with this item.