Direct characterization of the Li intercalation mechanism into α-V2O5 nanowires using in-situ transmission electron microscopy
[1];
[3];
- Department of Physics, University of Illinois at Chicago 1 , Chicago, Illinois 60607, USA;Joint Center for Energy Storage Research (JCESR), Argonne National Laboratory 2 , 9770 S Cass Avenue, Lemont, Illinois 60439, USA
- Department of Mechanical Engineering-Engineering Mechanics, Michigan Technological University 3 , Houghton, Michigan 49931, USA
- Joint Center for Energy Storage Research (JCESR), Argonne National Laboratory 2 , 9770 S Cass Avenue, Lemont, Illinois 60439, USA;Department of Chemistry, University of Illinois at Chicago 4 , Chicago, Illinois 60607, USA
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago 5 , Chicago, Illinois 60607, USA
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.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI ID:
- 2205192
- Journal Information:
- Applied Physics Letters, Vol. 110, Issue 21; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
In Situ Transmission Electron Microscopy Observation of Microstructure and Phase Evolution in a SnO2 Nanowire during Lithium Intercalation
Direct Investigation of Mg Intercalation into the Orthorhombic V2O5 Cathode Using Atomic-Resolution Transmission Electron Microscopy [Direct Investigation of Mg intercalation into orthorhombic V2O5 cathode using Atomic Resolution Electron Microscopy Methods]