Spray-drying synthesis of Na2FePO4F/carbon powders for lithium-ion batteries

[en] Sodium iron fluorophosphate Na2FePO4F is a candidate positive electrode material for both lithium-ion batteries and sodium-ion batteries. We report the synthesis of Na2FePO4F/carbon powders by the simple and easily up-scalable technique of spray-drying. An aqueous solution containing citric acid as a carbon source was sprayed in a pilot-scale spray-dryer. Heat treatment at 600°C in argon for 12 hours was found appropriate to obtain single-phase Na2FePO4F; only 1.8% of Fe (III) were detected by iron-57 Mössbauer spectroscopy. When cycled against lithium, the discharge capacity reached 110 mAh g-1 at C/15 rate. (C) 2014 Elsevier B.V. All rights reserved.

Disciplines :

Chemistry

Author, co-author :

Brisbois, Magali ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT

Krins, Natacha ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT

Hermann, Raphael; Jülich Center for Neutron Science JCNS and Peter Grünberg Institut PGI, JARA-FIT, Forschungzentrum Jülich GmbH

Schrijnemakers, Audrey ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT

Cloots, Rudi ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT

Vertruyen, Bénédicte ; Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale

Boschini, Frédéric ; Université de Liège - ULiège > Plateforme APTIS

Language :

English

Title :

Spray-drying synthesis of Na2FePO4F/carbon powders for lithium-ion batteries

Publication date :

2014

Journal title :

Materials Letters

ISSN :

0167-577X

eISSN :

1873-4979

Publisher :

Elsevier, Amsterdam, Netherlands

Volume :

130

Pages :

263-2633

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 11 June 2014

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Bibliography

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