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Title: Probing lithiation and delithiation of thick sintered lithium-ion battery electrodes with neutron imaging

Abstract

As lithium-on (Li-ion) batteries increase in their prevalence and the range of applications expands, there is a need to understand and exploit the limits of electrochemical performance. Probing the internal processes in Li-ion batteries provides insights into the electrochemical characteristics of the cells as well as information necessary for rational cell design. In this manuscript an in situ method, neutron imaging, is applied to Li-ion full cells to track the lithiation/delithiation processes in the electrodes during discharge. The electrodes comprise thick sintered films of only active material, which improves the number of discrete points that are mapped for net changes in neutron intensity through the electrode. The lithiation/delithiation processes are qualitatively consistent with calculations of the Li + concentration and discharge profiles of the cells. These results illustrate that neutron imaging can experimentally probe and confirm limitations in the electrochemical performance of Li-ion full cells, particularly those with thick electrodes.

Authors:
 [1];  [1]; ORCiD logo [2]; ORCiD logo [2];  [1]; ORCiD logo [2]; ORCiD logo [1]
  1. Univ. of Virginia, Charlottesville, VA (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1526376
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 419; Journal Issue: C; Journal ID: ISSN 0378-7753
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Neutron imaging; Lithium-ion battery; Sintered electrode; Ion transport; In situ characterization

Citation Formats

Nie, Ziyang, McCormack, Patrick, Bilheux, Hassina Z., Bilheux, Jean Christophe, Robinson, J. Pierce, Nanda, Jagjit, and Koenig, Jr., Gary M. Probing lithiation and delithiation of thick sintered lithium-ion battery electrodes with neutron imaging. United States: N. p., 2019. Web. doi:10.1016/j.jpowsour.2019.02.075.
Nie, Ziyang, McCormack, Patrick, Bilheux, Hassina Z., Bilheux, Jean Christophe, Robinson, J. Pierce, Nanda, Jagjit, & Koenig, Jr., Gary M. Probing lithiation and delithiation of thick sintered lithium-ion battery electrodes with neutron imaging. United States. doi:10.1016/j.jpowsour.2019.02.075.
Nie, Ziyang, McCormack, Patrick, Bilheux, Hassina Z., Bilheux, Jean Christophe, Robinson, J. Pierce, Nanda, Jagjit, and Koenig, Jr., Gary M. Fri . "Probing lithiation and delithiation of thick sintered lithium-ion battery electrodes with neutron imaging". United States. doi:10.1016/j.jpowsour.2019.02.075.
@article{osti_1526376,
title = {Probing lithiation and delithiation of thick sintered lithium-ion battery electrodes with neutron imaging},
author = {Nie, Ziyang and McCormack, Patrick and Bilheux, Hassina Z. and Bilheux, Jean Christophe and Robinson, J. Pierce and Nanda, Jagjit and Koenig, Jr., Gary M.},
abstractNote = {As lithium-on (Li-ion) batteries increase in their prevalence and the range of applications expands, there is a need to understand and exploit the limits of electrochemical performance. Probing the internal processes in Li-ion batteries provides insights into the electrochemical characteristics of the cells as well as information necessary for rational cell design. In this manuscript an in situ method, neutron imaging, is applied to Li-ion full cells to track the lithiation/delithiation processes in the electrodes during discharge. The electrodes comprise thick sintered films of only active material, which improves the number of discrete points that are mapped for net changes in neutron intensity through the electrode. The lithiation/delithiation processes are qualitatively consistent with calculations of the Li+ concentration and discharge profiles of the cells. These results illustrate that neutron imaging can experimentally probe and confirm limitations in the electrochemical performance of Li-ion full cells, particularly those with thick electrodes.},
doi = {10.1016/j.jpowsour.2019.02.075},
journal = {Journal of Power Sources},
number = C,
volume = 419,
place = {United States},
year = {2019},
month = {3}
}

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This content will become publicly available on March 1, 2020
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