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Poster (Scientific congresses and symposiums)
XPS and Raman study of spray-dried Na3V2(PO4)2F3/C as cathode material for sodium ion batteries
Eshraghi, Nicolas; Bodart, Jérôme; Mahmoud, Abdelfattah et al.
2019Spring Meeting of the European Materials Research Society (E-MRS)
 

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Keywords :
Energy storage; Na ion batteries; spray drying; XPS studay
Abstract :
[en] Na3V2(PO4)2F3 (NVPF) has attracted much attention as cathode material for Na-ion batteries thanks to the inductive effects allowing for a high working potential combined with a high theoretical specific capacity due to the multiple oxidation states of vanadium [1-2]. One of the limitations of NVPF electrodes is their low intrinsic electronic conductivity; therefore, we have prepared composites of NVPF with conductive carbon sources to ensure higher electronic conductivity of the electrodes. NVPF and NVPF/carbon composite materials were prepared by spray-drying as in our previous work [2]. Spray drying is a cost-effective and up-scalable route to prepare homogeneous multi-component powders, thus making it a suitable method to incorporate carbon in the composite powder [4]. The influence of different carbon sources on structural and morphological properties of NVPF and NVPF/carbon composite was investigated by combining several characterization techniques (XRD, SEM and TEM). The chemical composition at the surface of the powders were studied using XPS. Raman spectroscopy was used to evaluate the quality in disordered carbon materials and its electronic conductivity [3] and compare the results with the results from EIS and cycling performance of different samples. References: [1] Shakoor et al., Chem. 22,2012, 20535. [2] Eshraghi et al., Electrochimica Acta, 228, 2017, 319. [3] Mahmoud et al., J Solid State Electrochem. 22, 2018,103. [4] Vertruyen et al., Materials 2018, 11, 1076.
Research center :
CESAM - Complex and Entangled Systems from Atoms to Materials - ULiège
Disciplines :
Energy
Chemistry
Author, co-author :
Eshraghi, Nicolas  ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Bodart, Jérôme  ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Mahmoud, Abdelfattah  ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Vertruyen, Bénédicte  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale
Cloots, Rudi ;  Université de Liège - ULiège > Département de chimie (sciences) > Vice-Recteur à la vie étud. et aux infrastr. immobilières
Malherbe, Cédric ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie analytique inorganique
Boschini, Frédéric ;  Université de Liège - ULiège > Plateforme APTIS
Other collaborator :
Meyer III, Harry M.;  Oak Ridge National Laboratory > Materials Science and Technology Division
Nanda, Jagjit;  Oak Ridge National Laboratory > Chemical Sciences Division
Language :
English
Title :
XPS and Raman study of spray-dried Na3V2(PO4)2F3/C as cathode material for sodium ion batteries
Publication date :
28 May 2019
Event name :
Spring Meeting of the European Materials Research Society (E-MRS)
Event organizer :
European Materials Research Society
Event place :
Congress & Exhibition Centre Acropolis, NICE, France
Event date :
27-05-2019 to 31-05-2019
Funders :
Fédération Wallonie Bruxelles. Fonds de la Recherche Scientifique - F.R.S.-FNRS
Available on ORBi :
since 25 June 2019

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