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Issue 25, 2015
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Li-ion battery shut-off at high temperature caused by polymer phase separation in responsive electrolytes

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Abstract

For the purpose of realizing inherently safe high-power Li-ion batteries, a model Li4Ti5O12/LiFePO4 rechargeable battery is investigated using the thermally responsive polymer, poly(benzyl methacrylate), in an ionic liquid. At high temperature, battery operation is inhibited as a result of increased internal resistance caused by polymer and ionic liquid phase separation. Li-ion concentration is shown to affect the phase transition temperature and the extent to which batteries are deactivated.

Graphical abstract: Li-ion battery shut-off at high temperature caused by polymer phase separation in responsive electrolytes

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Publication details

The article was received on 24 Dec 2014, accepted on 23 Feb 2015 and first published on 23 Feb 2015


Article type: Communication
DOI: 10.1039/C4CC10282G
Citation: Chem. Commun., 2015,51, 5448-5451
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    Li-ion battery shut-off at high temperature caused by polymer phase separation in responsive electrolytes

    J. C. Kelly, N. L. Degrood and M. E. Roberts, Chem. Commun., 2015, 51, 5448
    DOI: 10.1039/C4CC10282G

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