Simultaneous unzippingandsulfonationofmulti-walledcarbon nanotubestosulfonatedgraphenenanoribbonsfornanocomposite membranesinpolymerelectrolytefuelcells
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Simultaneous unzippingandsulfonationofmulti-walledcarbon
nanotubestosulfonatedgraphenenanoribbonsfornanocomposite
membranesinpolymerelectrolytefuelcells
|
|
| Creator |
Shukla, A
Bhat, SD Vijayamohanan, Pillai K |
|
| Subject |
Electrodics and Electrocatalysis
Electrochemical Power Sources |
|
| Description |
Simultaneous insituunzippingandsulfonationofmulti-walledcarbonnanotubes(MWCNTs)using
potassium sulfate(K2SO4) andsodiumdodecylbenzenesulfonate(SDBS)byahydrothermalsynthetic
routeiscarriedouttopreparesulfonatedgraphenenanoribbons(sGNR)asconfirmed byvariouschar-
acterization techniques.Further,nanocompositepolymerelectrolytemembranesofthiswithsulfonated
polyetheretherketone(SPEEK)showenhancedionexchangecapacity(IEC),protonconductivityand
wateruptakecomparedtothatofpristineSPEEKmembrane.Highermechanicalstabilityforthese
composite membranesisobservedincomparisonwithpristineSPEEKmembrane.Interestingly,these
SPEEK/sGNR compositeelectrolytemembranes(0.1wt%sGNR)whiletestinginaprotonexchange
membrane fuelcell(PEMFCs)test-bed,showsacurrentdensityof840mAcm�2 at 0.6V(peakpower
density of660mWcm�2) comparedtothecurrentdensityof480mAcm�2 at 0.6V(peakpowerdensity
of 331mWcm�2) forpristineSPEEK.Theaccelerateddurabilitytestforthemembranesconfirms that
composite membranesofSPEEK/sGNRarehighlydurableevenafter200hwithmarginaldropinOCV
with negligiblefuelcross-overupto175htosuggestitspotentialapplicationsinslewoffuturetech-
nologies includingpolymerelectrolytefuelcells,waterelectrolyzersandelectrochemicalsensors
|
|
| Publisher |
Elsevier B.V.
|
|
| Date |
2016
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://cecri.csircentral.net/3168/1/110-2016.pdf
Shukla, A and Bhat, SD and Vijayamohanan, Pillai K (2016) Simultaneous unzippingandsulfonationofmulti-walledcarbon nanotubestosulfonatedgraphenenanoribbonsfornanocomposite membranesinpolymerelectrolytefuelcells. Journal of MembraneScience, 520. pp. 657-670. ISSN 0376-7388 |
|
| Relation |
http://www.elsevier.com/locate/memsci
http://cecri.csircentral.net/3168/ |
|