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Title: Predictive Design of Shear-Thickening Electrolytes for Safety Considerations

Abstract

Non-Newtonian, shear-thickening lithium-ion battery electrolytes show promise for improved safety in high impact events by exhibiting a reversible transition to a solid-like phase under high shear. This aids in the prevention of shorting and subsequent combustion of volatile electrolyte under such conditions. In this work, we investigate the electrodynamics of shear-thickening electrolytes using conductivity under shear measurements, as well as finite-element modeling. We observe an order of magnitude drop in ionic conductivity under shear-thickening conditions. We suggest a working model to explain substantial drops in conductivity observed in shear-thickening electrolytes under shear. Here the results here can be generally applied to any electrolyte that exhibits non-Newtonian hydrodynamic properties.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [2];  [1]; ORCiD logo [2]
+ Show Author Affiliations
  1. Univ. of Rochester, Rochester, NY (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
OSTI Identifier:
1504021
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 164; Journal Issue: 12; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Li-ion batteries; Multifunctional materials; Shear-thickening electrolytes

Citation Formats

Shen, Brian H., Veith, Gabriel M., Armstrong, Beth L., Tenhaeff, Wyatt E., and Sacci, Robert L. Predictive Design of Shear-Thickening Electrolytes for Safety Considerations. United States: N. p., 2017. Web. doi:10.1149/2.1171712jes.
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Shen, Brian H., Veith, Gabriel M., Armstrong, Beth L., Tenhaeff, Wyatt E., & Sacci, Robert L. Predictive Design of Shear-Thickening Electrolytes for Safety Considerations. United States. https://doi.org/10.1149/2.1171712jes
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Shen, Brian H., Veith, Gabriel M., Armstrong, Beth L., Tenhaeff, Wyatt E., and Sacci, Robert L. Fri . "Predictive Design of Shear-Thickening Electrolytes for Safety Considerations". United States. https://doi.org/10.1149/2.1171712jes. https://www.osti.gov/servlets/purl/1504021.
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@article{osti_1504021,
title = {Predictive Design of Shear-Thickening Electrolytes for Safety Considerations},
author = {Shen, Brian H. and Veith, Gabriel M. and Armstrong, Beth L. and Tenhaeff, Wyatt E. and Sacci, Robert L.},
abstractNote = {Non-Newtonian, shear-thickening lithium-ion battery electrolytes show promise for improved safety in high impact events by exhibiting a reversible transition to a solid-like phase under high shear. This aids in the prevention of shorting and subsequent combustion of volatile electrolyte under such conditions. In this work, we investigate the electrodynamics of shear-thickening electrolytes using conductivity under shear measurements, as well as finite-element modeling. We observe an order of magnitude drop in ionic conductivity under shear-thickening conditions. We suggest a working model to explain substantial drops in conductivity observed in shear-thickening electrolytes under shear. Here the results here can be generally applied to any electrolyte that exhibits non-Newtonian hydrodynamic properties.},
doi = {10.1149/2.1171712jes},
journal = {Journal of the Electrochemical Society},
number = 12,
volume = 164,
place = {United States},
year = {Fri Aug 25 00:00:00 EDT 2017},
month = {Fri Aug 25 00:00:00 EDT 2017}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1149/2.1171712jes
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Citation Metrics:
Cited by: 10 works
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Figures / Tables:

Figure 1 Figure 1: Geometry used in finite-element modeling of the hydrodynamic and ionic conductivity response to shear (electrode rotation). A) is 2D axial symmetric slice with the green lines highlighting the electrodes and B) is a 3D rendering showing disk ring electrode and cell volume. Note, the dimensions used here weremore » used in the actual measurements.« less
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