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Use of Organic Esters as Cosolvents in Electrolytes for Lithium-Ion Batteries with Improved Low Temperature Performance

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Smart, M. C., Ratnakumar, B. V., Surampudi, S.·2002·Journal of The Electrochemical Society

Abstract

The electrolyte composition plays a strong role in determining the low temperature performance of lithium-ion cells, both in terms of ionic mobility in the electrolyte solution, as well as forming suitable surface films on the electrode surfaces. A series of ester solvents was chosen for incorporation into multicomponent electrolyte formulations due to their favorable physiochemical properties ( i.e. , low viscosity, low melting point, and high permittivity), as well as good compatibility with carbonaceous anodes and mixed metal cathodes ( i.e. , and In addition to determining the relative facility of lithium intercalation and deintercalation in Li-carbon cells as a function of temperature, a number of conventional electrochemical methods were employed to further enhance the understanding of the nature of the electrode surface films in these ester-based electrolytes, including dc polarization and ac impedance measurements. A distinct trend was observed with respect to the stability of the surface films formed. In solutions containing low molecular weight cosolvents ( i.e. , methyl acetate and ethyl acetate) the surface films appear resistive and inadequately protective, whereas electrolytes containing higher molecular weight esters resulted in surface films with more desirable attributes. Promising electrolyte formulations were further evaluated in prototype lithium-ion cells (AA-size) and fully characterized in terms of their low temperature discharge performance. © 2002 The Electrochemical Society. All rights reserved.

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  • A methyl propionate-based electrolyte showed the best performance and delivered the highest capacity at -40 °C.

    “As shown in Fig. 5a, the MP-based electrolyte showed the best performance and delivered the highest capacity at LT (-40 °C).”

    From Review on Low-Temperature Electrolytes for Lithium-Ion and Lithium Metal Batteries (2023) · cites this paper as [40]

    The Prototype Cell Performance section reports that ester-containing electrolytes outperformed an all-carbonate electrolyte at −40 °C. But the paper’s studied esters are methyl acetate, ethyl acetate, ethyl propionate, and ethyl butyrate—not methyl propionate—and it does not establish that a methyl propionate electrolyte delivered the highest capacity. Page numbers are unavailable in our copy. (LLM, conf=0.88)

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  • Esters with shorter alkyl chains have the advantage of better ionic conductivity for the bulk electrolyte but the disadvantage of forming more resistive and less protective solid electrolyte interphases compared with longer-chain counterparts.

    “It was concluded that esters with shorter alkyl chains have the advantage in getting better ionic conductivity for the bulk electrolyte, but the disadvantage in forming more resistive and less protective SEIs as compared to longer chain counterparts.”
  • Rapid capacity decay at -20 °C occurred when using electrolytes with methyl acetate and ethyl acetate esters, although higher initial capacity was delivered.

    “Figure 5b shows the rapid capacity decay at -20 °C when using electrolytes with MA and EA esters (2 and 3), although higher initial capacity was delivered.”

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Research works printed but not linked: 7

  1. M. C. Smart, C.-K. Huang, B. V. Ratnakumar, and S. Surampudi, in Proceedings of the 37th Power Sources Conference, June 1996, pp. 239-242 ͑1996͒.
  2. M. C. Smart, C.-K. Huang, B.V. Ratnakumar, and S. Surampudi, in Proceedings of the Intersociety Energy Conversion Engineering Conference (IECEC), Honolulu, HI, July 1997.
  3. M. C. Smart, B. V. Ratnakumar, C.-K. Huang, and S. Surampudi, in SAE Aerospace Power Systems Conference Proceedings, P-322, pp. 7-14, 1998.
  4. E. Peled, in Lithium Batteries, J. P Gabano, Editor, Chap. 3, Academic Press, New York ͑1983͒.
  5. M. C. Smart, B. V. Ratnakumar, and S. Surampudi, in Proceedings of the 38th Power Sources Symposium, June 1998, pp. 452-456.
  6. M. C. Smart, B. V. Ratnakumar, S. Greenbaum, and S. Surampudi, Abstract 159, The Electrochemical Society Meeting Abstracts, Vol. 98-2, Boston, MA, Nov 1-6, 1998.
  7. M. C. Smart, B. V. Ratnakumar, and S. Surampudi, in Proceedings of the IEEE 14th Annual Battery Conference on Applications and Advances, Long Beach, CA, Jan 1999.

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Authors
Smart, M. C., Ratnakumar, B. V., & Surampudi, S.
Affiliations
California Institute of Technology (US)
Venue
Journal of The Electrochemical Society
Published
2002
Volume
149
Issue
4
Pages
A361
ISSN
0013-4651 (ISSN-L)
OpenAlex
W2028749795
Cited by
234
References
18
Citations by year
2026: 5 · 2025: 18 · 2024: 23 · 2023: 24 · 2022: 24 · 2021: 17 · 2020: 14 · 2019: 8 · 2018: 11 · 2017: 7 · 2016: 5 · 2015: 9 · 2014: 5 · 2013: 7 · 2012: 5
FWCI
8.05
Type
journal article
Language
en
Open access
Locations
Journal of The Electrochemical Society (publishedVersion)
Funders
  • National Aeronautics and Space Administration
  • California Institute of Technology
  • Defense Advanced Research Projects Agency
  • Jet Propulsion Laboratory
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advancements in Battery Materials
  • Physical Sciences › Engineering › Automotive Engineering › Advanced Battery Technologies Research
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Battery Materials and Technologies
Keywords
lithium-ion batteries, low-temperature performance, electrolyte formulation, surface films, lithium intercalation, methyl acetate, ethyl acetate, ionic conductivity, electrode-electrolyte interface, low-temperature discharge

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