Comparing Cycling Characteristics of Symmetric Lithium-Polymer-Lithium Cells with Theoretical Predictions
Abstract
We develop a model based on concentrated solution theory for predicting the cycling characteristics of a lithium-polymer-lithium symmetric cell containing an electrolyte with known transport properties. The electrolytes used in this study are mixtures of polyethylene oxide (PEO) and lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) salt, prepared over a wide range of salt concentrations. The transport properties of PEO/LiTFSI previously reported in the literature are used as inputs for our model. We calculate salt concentration and potential profiles, which develop in these electrolytes under a constant dc polarization, as a function of current density, electrolyte thickness, and salt concentration. These profiles are nonlinear at steady-state due to the strong concentration dependence of the transport properties of this electrolyte. The effect of this nonlinearity on limiting current is demonstrated. Cycling characteristics of a series of lithium symmetric cells were measured to test the validity of our model, without resorting to any adjustable parameters. The time-dependence and steady-state value of the potential measured during cycling experiments were in excellent agreement with model predictions.
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1477906
- Alternate Identifier(s):
- OSTI ID: 1605216
- Grant/Contract Number:
- AC02-06CH11357; AC02-05CH11231
- Resource Type:
- Published Article
- Journal Name:
- Journal of the Electrochemical Society
- Additional Journal Information:
- Journal Name: Journal of the Electrochemical Society Journal Volume: 165 Journal Issue: 13; Journal ID: ISSN 0013-4651
- Publisher:
- IOP Publishing - The Electrochemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE
Citation Formats
Pesko, Danielle M., Feng, Zhange, Sawhney, Simar, Newman, John, Srinivasan, Venkat, and Balsara, Nitash P. Comparing Cycling Characteristics of Symmetric Lithium-Polymer-Lithium Cells with Theoretical Predictions. United States: N. p., 2018.
Web. doi:10.1149/2.0921813jes.
Pesko, Danielle M., Feng, Zhange, Sawhney, Simar, Newman, John, Srinivasan, Venkat, & Balsara, Nitash P. Comparing Cycling Characteristics of Symmetric Lithium-Polymer-Lithium Cells with Theoretical Predictions. United States. https://doi.org/10.1149/2.0921813jes
Pesko, Danielle M., Feng, Zhange, Sawhney, Simar, Newman, John, Srinivasan, Venkat, and Balsara, Nitash P. Mon .
"Comparing Cycling Characteristics of Symmetric Lithium-Polymer-Lithium Cells with Theoretical Predictions". United States. https://doi.org/10.1149/2.0921813jes.
@article{osti_1477906,
title = {Comparing Cycling Characteristics of Symmetric Lithium-Polymer-Lithium Cells with Theoretical Predictions},
author = {Pesko, Danielle M. and Feng, Zhange and Sawhney, Simar and Newman, John and Srinivasan, Venkat and Balsara, Nitash P.},
abstractNote = {We develop a model based on concentrated solution theory for predicting the cycling characteristics of a lithium-polymer-lithium symmetric cell containing an electrolyte with known transport properties. The electrolytes used in this study are mixtures of polyethylene oxide (PEO) and lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) salt, prepared over a wide range of salt concentrations. The transport properties of PEO/LiTFSI previously reported in the literature are used as inputs for our model. We calculate salt concentration and potential profiles, which develop in these electrolytes under a constant dc polarization, as a function of current density, electrolyte thickness, and salt concentration. These profiles are nonlinear at steady-state due to the strong concentration dependence of the transport properties of this electrolyte. The effect of this nonlinearity on limiting current is demonstrated. Cycling characteristics of a series of lithium symmetric cells were measured to test the validity of our model, without resorting to any adjustable parameters. The time-dependence and steady-state value of the potential measured during cycling experiments were in excellent agreement with model predictions.},
doi = {10.1149/2.0921813jes},
journal = {Journal of the Electrochemical Society},
number = 13,
volume = 165,
place = {United States},
year = {Mon Oct 15 00:00:00 EDT 2018},
month = {Mon Oct 15 00:00:00 EDT 2018}
}
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https://doi.org/10.1149/2.0921813jes
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