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Title: Electrolyte volume effects on electrochemical performance and solid electrolyte interphase in Si-graphite/NMC lithium-ion pouch cells

Abstract

This study aims to explore the correlations between electrolyte volume, electrochemical performance, and properties of the solid electrolyte interphase in pouch cells with Si-graphite composite anodes. The electrolyte is 1.2 M LiPF6 in ethylene carbonate:ethylmethyl carbonate with 10 wt % fluoroethylene carbonate. Single layer pouch cells (100 mA h) were constructed with 15 wt % Si-graphite/LiNi0.5Mn0.3CO0.2O2 electrodes. It is found that a minimum electrolyte volume factor of 3.1 times to the total pore volume of cell components (cathode, anode, and separator) is needed for better cycling stability. Less electrolyte causes increases in ohmic and charge transfer resistances. Lithium dendrites are observed when the electrolyte volume factor is low. As a result, the resistances from the anodes become significant as the cells are discharged. Solid electrolyte interphase thickness grows as the electrolyte volume factor increases and is nonuniform after cycling.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [1];  [2];  [3];  [3];  [1]
+ Show Author Affiliations
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1372400
Alternate Identifier(s):
OSTI ID: 1376392
Grant/Contract Number:  
AC02-06CH11357; AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 9; Journal Issue: 22; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 25 ENERGY STORAGE; electrolyte volume; cycle life; lithium-ion; resistance; silicon-graphite anode; solid electrolyte interphase; lithium ion

Citation Formats

An, Seong Jin, Li, Jianlin, Daniel, Claus, Meyer, III, Harry M., Trask, Stephen E., Polzin, Bryant J., and Wood, David L. Electrolyte volume effects on electrochemical performance and solid electrolyte interphase in Si-graphite/NMC lithium-ion pouch cells. United States: N. p., 2017. Web. doi:10.1021/acsami.7b03617.
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An, Seong Jin, Li, Jianlin, Daniel, Claus, Meyer, III, Harry M., Trask, Stephen E., Polzin, Bryant J., & Wood, David L. Electrolyte volume effects on electrochemical performance and solid electrolyte interphase in Si-graphite/NMC lithium-ion pouch cells. United States. https://doi.org/10.1021/acsami.7b03617
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An, Seong Jin, Li, Jianlin, Daniel, Claus, Meyer, III, Harry M., Trask, Stephen E., Polzin, Bryant J., and Wood, David L. Mon . "Electrolyte volume effects on electrochemical performance and solid electrolyte interphase in Si-graphite/NMC lithium-ion pouch cells". United States. https://doi.org/10.1021/acsami.7b03617. https://www.osti.gov/servlets/purl/1372400.
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@article{osti_1372400,
title = {Electrolyte volume effects on electrochemical performance and solid electrolyte interphase in Si-graphite/NMC lithium-ion pouch cells},
author = {An, Seong Jin and Li, Jianlin and Daniel, Claus and Meyer, III, Harry M. and Trask, Stephen E. and Polzin, Bryant J. and Wood, David L.},
abstractNote = {This study aims to explore the correlations between electrolyte volume, electrochemical performance, and properties of the solid electrolyte interphase in pouch cells with Si-graphite composite anodes. The electrolyte is 1.2 M LiPF6 in ethylene carbonate:ethylmethyl carbonate with 10 wt % fluoroethylene carbonate. Single layer pouch cells (100 mA h) were constructed with 15 wt % Si-graphite/LiNi0.5Mn0.3CO0.2O2 electrodes. It is found that a minimum electrolyte volume factor of 3.1 times to the total pore volume of cell components (cathode, anode, and separator) is needed for better cycling stability. Less electrolyte causes increases in ohmic and charge transfer resistances. Lithium dendrites are observed when the electrolyte volume factor is low. As a result, the resistances from the anodes become significant as the cells are discharged. Solid electrolyte interphase thickness grows as the electrolyte volume factor increases and is nonuniform after cycling.},
doi = {10.1021/acsami.7b03617},
journal = {ACS Applied Materials and Interfaces},
number = 22,
volume = 9,
place = {United States},
year = {Mon May 15 00:00:00 EDT 2017},
month = {Mon May 15 00:00:00 EDT 2017}
}
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Journal Article:
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https://doi.org/10.1021/acsami.7b03617
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Works referenced in this record:

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Correlation of Electrolyte Volume and Electrochemical Performance in Lithium-Ion Pouch Cells with Graphite Anodes and NMC532 Cathodes
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    Works referencing / citing this record:

    Interfacially Induced Cascading Failure in Graphite‐Silicon Composite Anodes
    journal, December 2018

    Design and Demonstration of Three-Electrode Pouch Cells for Lithium-Ion Batteries
    journal, January 2017

    • An, Seong Jin; Li, Jianlin; Daniel, Claus
    • Journal of The Electrochemical Society, Vol. 164, Issue 7
    • DOI: 10.1149/2.0031709jes

    Interfacially Induced Cascading Failure in Graphite‐Silicon Composite Anodes
    journal, December 2018

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