Imaging of the Li spatial distribution within V2O5 cathode in a coin cell by neutron computed tomography
Abstract
An understanding of Lithium (Li) spatial distribution within the electrodes of a Li-ion cell, during charge and discharge cycles, is essential to optimize the electrode parameters for increased performance under cycling. In this work, it is demonstrated that the spatial distribution of Li within Vanadium Pentoxide (V2O5) electrodes of a small coin cell can be imaged by neutron computed tomography. The neutron attenuation data has been used to construct the three-dimensional Li spatial images. Specifically, it is shown that there is sufficient neutron imaging contrast between lithiated and delithiated regions of V2O5 electrode making it possible to map Li distributions even in small electrodes with thicknesses <1 mm. The images reveal that the Li spatial distribution is inhomogeneous and a relatively higher C-rate leads to more non-uniform Li distribution after Li insertion. The non-uniform distribution suggests the limitation of Li diffusion within the electrode during the lithiation process under the relatively high cycling rates.
- Authors:
-
- Univ. of Utah, Salt Lake City, UT (United States). Dept. of Metallurgical Engineering
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division
- Publication Date:
- Research Org.:
- Univ. of Utah, Salt Lake City, UT (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1411445
- Alternate Identifier(s):
- OSTI ID: 1549193
- Grant/Contract Number:
- AC05-00OR22725; FG02-12ER46891; FG0212ER46891
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Power Sources
- Additional Journal Information:
- Journal Volume: 376; Journal Issue: C; Journal ID: ISSN 0378-7753
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 25 ENERGY STORAGE; Li ion cell; V2O5 cathode; Spatial distribution; Neutron imaging; C-rates; Computed tomography
Citation Formats
Zhang, Yuxuan, Chandran, K. S. Ravi, and Bilheux, Hassina Z. Imaging of the Li spatial distribution within V2O5 cathode in a coin cell by neutron computed tomography. United States: N. p., 2017.
Web. doi:10.1016/j.jpowsour.2017.11.080.
Zhang, Yuxuan, Chandran, K. S. Ravi, & Bilheux, Hassina Z. Imaging of the Li spatial distribution within V2O5 cathode in a coin cell by neutron computed tomography. United States. https://doi.org/10.1016/j.jpowsour.2017.11.080
Zhang, Yuxuan, Chandran, K. S. Ravi, and Bilheux, Hassina Z. Thu .
"Imaging of the Li spatial distribution within V2O5 cathode in a coin cell by neutron computed tomography". United States. https://doi.org/10.1016/j.jpowsour.2017.11.080. https://www.osti.gov/servlets/purl/1411445.
@article{osti_1411445,
title = {Imaging of the Li spatial distribution within V2O5 cathode in a coin cell by neutron computed tomography},
author = {Zhang, Yuxuan and Chandran, K. S. Ravi and Bilheux, Hassina Z.},
abstractNote = {An understanding of Lithium (Li) spatial distribution within the electrodes of a Li-ion cell, during charge and discharge cycles, is essential to optimize the electrode parameters for increased performance under cycling. In this work, it is demonstrated that the spatial distribution of Li within Vanadium Pentoxide (V2O5) electrodes of a small coin cell can be imaged by neutron computed tomography. The neutron attenuation data has been used to construct the three-dimensional Li spatial images. Specifically, it is shown that there is sufficient neutron imaging contrast between lithiated and delithiated regions of V2O5 electrode making it possible to map Li distributions even in small electrodes with thicknesses <1 mm. The images reveal that the Li spatial distribution is inhomogeneous and a relatively higher C-rate leads to more non-uniform Li distribution after Li insertion. The non-uniform distribution suggests the limitation of Li diffusion within the electrode during the lithiation process under the relatively high cycling rates.},
doi = {10.1016/j.jpowsour.2017.11.080},
journal = {Journal of Power Sources},
number = C,
volume = 376,
place = {United States},
year = {Thu Nov 30 00:00:00 EST 2017},
month = {Thu Nov 30 00:00:00 EST 2017}
}
Web of Science
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Works referencing / citing this record:
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