title: Microwave-assisted synthesis and electrochemical evaluation of VO2 (B) nanostructures.
abstract: Understanding how intercalation materials change during electrochemical operation is paramount to optimizing their behaviour and function and in situ characterization methods allow us to observe these changes without sample destruction. Here we first report the improved intercalation properties of bronze phase vanadium dioxide VO2 (B) prepared by a microwave-assisted route which exhibits a larger electrochemical capacity (232 mAh g(-1)) compared with VO2 (B) prepared by a solvothermal route (197 mAh g(-1)). These electrochemical differences have also been followed using in situ X-ray absorption spectroscopy allowing us to follow oxidation state changes as they occur during battery operation.
authors.affiliation: School of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland.
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Ashton
authors.affiliation: School of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland.
authors.forename: David
authors.initials: D
authors.lastname: Hevia Borrás
authors.affiliation: The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France.
authors.forename: Antonella
authors.initials: A
authors.lastname: Iadecola
authors.affiliation: X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA.
authors.forename: Kamila M
authors.initials: KM
authors.lastname: Wiaderek
authors.affiliation: X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA.
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Chupas
authors.affiliation: X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA.
authors.forename: Karena W
authors.initials: KW
authors.lastname: Chapman
authors.affiliation: School of Chemistry, University of Glasgow, Glasgow G12 8QQ, Scotland.
authors.forename: Serena A
authors.initials: SA
authors.lastname: Corr
keywords: Li-ion battery; X-ray absorption spectroscopy; in-situ; intercalation; vanadium dioxide