Cited 3 time in webofscience Cited 3 time in scopus

Nafion-porous cerium oxide nanotubes composite membrane for polymer electrolyte fuel cells operated under dry conditions

Title
Nafion-porous cerium oxide nanotubes composite membrane for polymer electrolyte fuel cells operated under dry conditions
Authors
Ketpang, K[Ketpang, Kriangsak]Oh, K[Oh, Kwangjin]Lim, SC[Lim, Sung-Chul]Shanmugam, S[Shanmugam, Sangaraju]
DGIST Authors
Ketpang, K[Ketpang, Kriangsak]; Oh, K[Oh, Kwangjin]; Lim, SC[Lim, Sung-Chul]; Shanmugam, S[Shanmugam, Sangaraju]
Issue Date
2016-10-15
Citation
Journal of Power Sources, 329, 441-449
Type
Article
Article Type
Article
Keywords
CeriumCerium Oxide NanoparticleCerium Oxide NanotubesCerium OxidesComposite MembranesDurabilityElectrolytesFluoride IonFluoride Ion EmissionFluorine CompoundsFuel Cell OperationFuel CellsGas Fuel PurificationLow Relative HumiditiesMembranesNafion Composite MembraneNafion Composite MembranesNanotubesOhmic ContactsOxidesPerfluorosulfonic AcidPolyelectrolytesPolymer Electrolyte Fuel CellsPolymersProton-Exchange Membrane Fuel Cells (PEMFC)Solid ElectrolytesYarn
ISSN
0378-7753
Abstract
A composite membrane operated in polymer electrolyte fuel cells (PEFCs) under low relative humidity (RH) is developed by incorporating cerium oxide nanotubes (CeNT) into a perfluorosulfonic acid (Nafion®) membrane. Porous CeNT is synthesized by direct heating a precursor impregnated polymer fibers at 500 °C under an air atmosphere. Compared to recast Nafion and commercial Nafion (NRE-212) membranes, the Nafion-CeNT composite membrane generates 1.1 times higher power density at 0.6 V, operated at 80 °C under 100% RH. Compared to Nafion-cerium oxide nanoparticles (Nafion-CeNP) membrane, the Nafion-CeNT provides 1.2 and 1.7 times higher PEFC performance at 0.6 V when operated at 80 °C under 100% and 18% RH, respectively. Additionally, the Nafion-CeNT composite membrane exhibits a good fuel cell operation under 18% RH at 80 °C. Specifically, the fluoride emission rate of Nafion-CeNT composite membrane is 20 times lower than that of the commercial NRE-212 membrane when operated under 18% RH at 80 °C for 96 h. The outstanding PEFC performance and durability operated under dry conditions is mainly attributed to the facile water diffusion capability as well as the effective hydroxyl radical scavenging property of the CeNT filler, resulting in significantly mitigating both the ohmic resistance and Nafion membrane degradation. © 2016 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/2170
DOI
10.1016/j.jpowsour.2016.08.086
Publisher
Elsevier B.V.
Related Researcher
Files:
There are no files associated with this item.
Collection:
Energy Science and EngineeringAdvanced Energy Materials Laboratory1. Journal Articles
Convergence Research Center for Wellness1. Journal Articles
Energy Science and EngineeringDiscovery Lab(Batteries & Materials Discovery Laboratory)1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE