Reference : Sodium vanadium (III) fluorophosphate/carbon nanotubes composite (NVPF/CNT) prepared ...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Sodium vanadium (III) fluorophosphate/carbon nanotubes composite (NVPF/CNT) prepared by spray-drying: good electrochemical performance thanks to well-dispersed CNT network within NVPF particles
Eshraghi, Nicolas mailto [Université de Liège > Département de chimie (sciences) > LCIS - GreenMAT >]
Caes, Sebastien [> >]
Mahmoud, Abdelfattah [Université de Liège > Département de chimie (sciences) > LCIS - GreenMAT >]
Cloots, Rudi [Université de Liège > Département de chimie (sciences) > LCIS - GreenMAT >]
Vertruyen, Bénédicte [Université de Liège > Département de chimie (sciences) > Chimie inorganique structurale >]
Boschini, Frédéric [Université de Liège > > Plateforme APTIS >]
Electrochimica Acta
Pergamon Press - An Imprint of Elsevier Science
319 - 324
Yes (verified by ORBi)
[en] Spray drying ; NASICON-type material ; Electrochemistry ; Hybrid-ion Batteries ; Composite Electrode
[en] We successfully prepared NASICON-type Na3V2(PO4)2F3 (NVPF) and a Na3V2(PO4)2F3/carbon nanotubes (CNT) composite by spray-drying followed by heat treatment in argon for 2 hours at 600 °C. The addition of CNT in the spray-drying solution creates a CNT network within the NVPF particles. After grinding, the smaller NVPF particles remain linked by CNT. Thanks to this conducting network, the composite powder displays competitive electrochemical performance when cycled against lithium in hybrid-ion batteries (2–4.6 V vs. Li+/Li) with specific capacities of 125 mAh.g−1 at C/10, 103 mAh.g−1 at 1C and 91 mAh.g−1 at 4C, together with 97.5% capacity retention at 1C over 100 cycles with coulombic efficiency of 99.4%. These results demonstrate that sodium vanadium (III) fluorophosphate electrode material can be obtained in a time-efficient way using the easily up-scalable spray-drying method.
GreenMat ; Complex and Entangled Systems from Atoms to Materials - CESAM
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; BATWAL project [PE Plan Marshall 2.vert] ; Beware Fellowship Academia [2015-1, RESIBAT no. 1510399] ; FRIA PhD fellowship [Grant 1.E118.16]
Researchers ; Professionals ; Students

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