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Ionothermal Synthesis of Lithium Iron Phosphate Composite Nanoparticles as a Cathode Material for Li-ion Batteries

Abstract

An affordable yet high performance LiFePO4/C cathode material has been synthesized through an ionothermal approach. The incorporation of the ionic liquid 1-ethyl-3-methylimidazolium trifluoromethanesulfonate in a bath synthesis with iron chloride and lithium phosphate as precursors has allowed for the precipitation of crystalline LiFePO4 using significantly less temperature and less time than previous methods. Post sintering with starch has yield a crystalline cathode material with a 155 mAh/g specific capacity at a 1C rating.

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