Direct characterization of the Li intercalation mechanism into α-V < inf> 2 O < inf> 5 nanowires using in-situ transmission electron microscopy
Document Type
Article
Publication Date
5-22-2017
Abstract
© 2017 Author(s). The Li-V2O5 system has been well studied electrochemically, but there is a lack of systematic in-situ studies involving direct investigations of the structural changes that accompany the lithiation process. The open-cell battery setup inside a transmission electron microscope is ideal for studying the reaction pathway of intercalation of Li+ into nanowire cathodes. In this work, we utilize in-situ transmission electron microscopy to study the Li-V2O5 system. More specifically, we employ electron beam diffraction and electron energy-loss spectroscopy (EELS) in an open-cell battery setup to examine the phase changes within α-V2O5 nanowire cathodes upon in-situ lithiation. Our results suggest that the pristine α-V2O5 nanowire forms a Li oxide shell which then acts as a solid state electrolyte to conduct Li+ ions, and the bulk of the V2O5 nanowire undergoes transformation to the γ-Li2V2O5 phase.
Publication Title
Applied Physics Letters
Recommended Citation
Mukherjee, A.,
Ardakani, H.,
Yi, T.,
Cabana, J.,
Shahbazian-Yassar, R.,
&
Klie, R.
(2017).
Direct characterization of the Li intercalation mechanism into α-V < inf> 2 O < inf> 5 nanowires using in-situ transmission electron microscopy.
Applied Physics Letters,
110(21).
http://doi.org/10.1063/1.4984111
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/9015