Vanadium oxide polycrystalline nanorods and ion-exchanged nanotubes for enhanced lithium intercalation

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this work we investigate two alternative methods to remove amine molecules from as-synthesized vanadium oxide nanotubes (VONTs). Thermal treatment results in the formation of polycrystalline nanorods (poly-NRs) and ion exchange reactions with NaCl result in the formation of Na-VONTs. The removal of amine molecules is confirmed by monitoring the inorganic and organic phase changes and decomposition, respectively, using electron microscopy, IR spectroscopy and X-ray diffraction analyses. We compare the electrochemical performance of assynthesized VONTs, poly-NRs and Na-VONTs. This work demonstrates that the presence of amine molecules within the layers of vanadium oxide impedes the intercalation of lithium ions, and that their removal results in a significant improvement in electrochemical characteristics. Out of the three vanadium oxide nanostructures investigated, poly-NRs exhibit the most promising results for practical use as a cathode material.

Original languageEnglish
Title of host publicationLithium-Ion Batteries
EditorsS. Meng, K. Amine, J. Wu
PublisherElectrochemical Society Inc.
Pages1-12
Number of pages12
Edition22
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2014
EventSymposium on Lithium-Ion Batteries - 2014 ECS and SMEQ Joint International Meeting - Cancun, Mexico
Duration: 5 Oct 20149 Oct 2014

Publication series

NameECS Transactions
Number22
Volume64
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

ConferenceSymposium on Lithium-Ion Batteries - 2014 ECS and SMEQ Joint International Meeting
Country/TerritoryMexico
CityCancun
Period5/10/149/10/14

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