TY - GEN
T1 - Vanadium oxide polycrystalline nanorods and ion-exchanged nanotubes for enhanced lithium intercalation
AU - McNulty, D.
AU - Buckley, D. N.
AU - O'Dwyer, C.
N1 - Publisher Copyright:
© 2015 The Electrochemical Society.
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84930162844&partnerID=8YFLogxK
U2 - 10.1149/06422.0001ecst
DO - 10.1149/06422.0001ecst
M3 - Conference contribution
AN - SCOPUS:84930162844
T3 - ECS Transactions
SP - 1
EP - 12
BT - Lithium-Ion Batteries
A2 - Meng, S.
A2 - Amine, K.
A2 - Wu, J.
PB - Electrochemical Society Inc.
T2 - Symposium on Lithium-Ion Batteries - 2014 ECS and SMEQ Joint International Meeting
Y2 - 5 October 2014 through 9 October 2014
ER -