[en] Nb2xV2 - 2xO5 (0 <= x <= 1) powders were prepared by a synthetic route based on the inorganic polymerization of alkoxy-choride precursors and characterized by a combination of X-ray diffraction V-51 and Nb-93 NMR and Raman spectroscopy. Amorphous mesoporous thin films of similar compositions were successfully prepared by a modified Evaporation Induced Self Assembly method using polystyrene-b-polyethyleneoxide diblock copolymer as structuring agent. The electrochemical properties of the mesoporous films upon lithium insertion-deinsertion are investigated by cyclic voltammetry. This study highlights the advantages of such nanoarchitecture in terms of increased capacity to insert lithium. (C) 2009 Elsevier B.V. All rights reserved.
Disciplines :
Chemistry
Author, co-author :
Krins, Natacha ; Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale
Lepot, Laurent; Université de Liège - ULiège > Chimie Analytique et Electrochimie
Cloots, Rudi ; Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale - Doyen de la Faculté des Sciences
Vertruyen, Bénédicte ; Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale
Language :
English
Title :
Structural and electrochemical characterization of mesoporous thin films of Nb2xV2-2xO5 upon lithium intercalation
Publication date :
2009
Audience :
International
Journal title :
Solid State Ionics
ISSN :
0167-2738
Publisher :
Elsevier Science, Amsterdam, Netherlands
Special issue title :
Sp. Iss. SI
Volume :
180
Issue :
11-13
Pages :
848-852
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Interuniversity Attraction Pole INANOMAT (P6/17)
Funders :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]