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Issue 11, 2015
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Thermally-responsive, nonflammable phosphonium ionic liquid electrolytes for lithium metal batteries: operating at 100 degrees celsius

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Abstract

Rechargeable batteries such as Li ion/Li metal batteries are widely used in the electronics market but the chemical instability of the electrolyte limits their use in more demanding environmental conditions such as in automotive, oil exploration, or mining applications. In this study, a series of alkyl phosphonium ionic liquid electrolyte are described with high thermal stability and solubility for LiTFSI. A lithium metal battery (LMB) containing a tailored phosphonium ionic liquid/LiTFSI electrolyte operates at 100 °C with good specific capacities and cycling stability. Substantial capacity is maintained during 70 cycles or 30 days. Instant on-off battery operation is realized via the significant temperature dependence of the electrolyte material, demonstrating the robustness and potential for use at high temperature.

Graphical abstract: Thermally-responsive, nonflammable phosphonium ionic liquid electrolytes for lithium metal batteries: operating at 100 degrees celsius

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Publication details

The article was received on 26 Apr 2015, accepted on 07 Aug 2015 and first published on 12 Aug 2015


Article type: Edge Article
DOI: 10.1039/C5SC01518A
Chem. Sci., 2015,6, 6601-6606
  • Open access: Creative Commons BY license
    All publication charges for this article have been paid for by the Royal Society of Chemistry

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    Thermally-responsive, nonflammable phosphonium ionic liquid electrolytes for lithium metal batteries: operating at 100 degrees celsius

    X. Lin, R. Kavian, Y. Lu, Q. Hu, Y. Shao-Horn and M. W. Grinstaff, Chem. Sci., 2015, 6, 6601
    DOI: 10.1039/C5SC01518A

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      [Original citation] - Published by The Royal Society of Chemistry.

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