Article (Scientific journals)
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; Caes, Sébastien; Mahmoud, Abdelfattah et al.
2017In Electrochimica Acta, 228, p. 319 - 324
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Keywords :
Spray drying; NASICON-type material; Electrochemistry; Hybrid-ion Batteries; Composite Electrode
Abstract :
[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.
Research center :
GreenMat
CESAM - Complex and Entangled Systems from Atoms to Materials - ULiège
Disciplines :
Chemistry
Author, co-author :
Eshraghi, Nicolas  ;  Université de Liège > Département de chimie (sciences) > LCIS - GreenMAT
Caes, Sébastien 
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
Language :
English
Title :
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
Publication date :
06 January 2017
Journal title :
Electrochimica Acta
ISSN :
0013-4686
Publisher :
Pergamon Press - An Imprint of Elsevier Science
Volume :
228
Pages :
319 - 324
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
BATWAL project [PE Plan Marshall 2.vert]
Beware Fellowship Academia [2015-1, RESIBAT no. 1510399]
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
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since 24 January 2017

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