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Title: Microwave-assisted synthesis and electrochemical evaluation of VO2 (B) nanostructures

Understanding how intercalation materials change during electrochemical operation is paramount to optimising their behaviour and function and in situ characterisation 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 to 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:
 [1] ;  [1] ;  [2] ;  [3] ;  [3] ;  [1]
  1. Univ. of Glasgow, Scotland (United Kingdom). School of Chemistry
  2. European Synchrotron, Grenoble (France); Network on the Electrochemical Storage of Energy (France); Synchrotron SOLEIL, Saint Aubin, Gif sur Yvette (France)
  3. Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division
Publication Date:
OSTI Identifier:
1240688
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Acta Crystallographica. Section B: Structural Science
Additional Journal Information:
Journal Volume: 71; Journal Issue: 6; Journal ID: ISSN 0108-7681
Publisher:
International Union of Crystallography
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Royal Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE in situ; intercalation; li-ion battery; vanadium dioxide; x-ray absorption spectroscopy