Realisation of an all solid state lithium battery using solid high temperature plastic crystal electrolytes exhibiting liquid like conductivity

Physical Chemistry Chemical Physics : PCCP
Youssof ShekibiAnthony F Hollenkamp

Abstract

Replacement of volatile and combustible electrolytes in conventional lithium batteries is desirable for two reasons: safety concerns and increase in specific energy. In this work we consider the use of an ionic organic plastic crystal material (IOPC), N-ethyl-N-methylpyrrolidinium tetrafluoroborate, [C2mpyr][BF(4)], as a solid-state electrolyte for lithium battery applications. The effect of inclusion of 1 to 33 mol% lithium tetrafluoroborate, LiBF(4), into [C2mpyr][BF(4)] has been investigated over a wide temperature range by differential scanning calorimetry (DSC), impedance spectroscopy, cyclic voltammetry and cycling of full Li|LiFePO(4) batteries. The increases in ionic conductivity by orders of magnitude observed at higher temperature are most likely associated with an increase in Li ion mobility in the highest plastic phase. At concentrations >5 mol% LiBF(4) the ionic conductivity of these solid-state composites is comparable to the ionic conductivity of room temperature ionic liquids. Galvanostatic cycling of Li|Li symmetrical cells showed that the reversibility of the lithium metal redox reaction at the interface of this plastic crystal electrolyte is sufficient for lithium battery applications. For the first time we d...Continue Reading

References

Oct 2, 2003·Angewandte Chemie·Yaser Abu-LebdehMichel Armand
Mar 3, 2005·The Journal of Chemical Physics·Steven J PasAnita J Hill
Apr 1, 1998·Advanced Materials·W H Meyer

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Citations

Aug 26, 2014·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Fangfang ChenMaria Forsyth
Mar 27, 2018·Chemical Communications : Chem Comm·Danah Al-MasriJennifer M Pringle
Jun 12, 2013·Physical Chemistry Chemical Physics : PCCP·Patrick C HowlettJim Efthimiadis
Sep 23, 2014·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Haijin ZhuMaria Forsyth
Nov 28, 2012·Physical Chemistry Chemical Physics : PCCP·Jennifer M Pringle
Oct 22, 2013·Physical Chemistry Chemical Physics : PCCP·Liyu JinMaria Forsyth

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