Gelled Electrolyte Containing Phosphonium Ionic Liquids for Lithium-Ion Batteries
AbstractIn this work, new gelled electrolytes were prepared based on a mixture containing phosphonium ionic liquid (IL) composed of trihexyl(tetradecyl)phosphonium cation combined with bis(trifluoromethane)sulfonimide [TFSI] counter anions and lithium salt, confined in a host network made from an epoxy prepolymer and amine hardener. We have demonstrated that the addition of electrolyte plays a key role on the kinetics of polymerization but also on the final properties of epoxy networks, especially thermal, thermo-mechanical, transport, and electrochemical properties. Thus, polymer electrolytes with excellent thermal stability (>300 °C) combined with good thermo-mechanical properties have been prepared. In addition, an ionic conductivity of 0.13 Ms·cm−1 at 100 °C was reached. Its electrochemical stability was 3.95 V vs. Li0/Li+ and the assembled cell consisting in Li|LiFePO4 exhibited stable cycle properties even after 30 cycles. These results highlight a promising gelled electrolyte for future lithium ion batteries. View Full-Text
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Leclère, M.; Bernard, L.; Livi, S.; Bardet, M.; Guillermo, A.; Picard, L.; Duchet-Rumeau, J. Gelled Electrolyte Containing Phosphonium Ionic Liquids for Lithium-Ion Batteries. Nanomaterials 2018, 8, 435.
Leclère M, Bernard L, Livi S, Bardet M, Guillermo A, Picard L, Duchet-Rumeau J. Gelled Electrolyte Containing Phosphonium Ionic Liquids for Lithium-Ion Batteries. Nanomaterials. 2018; 8(6):435.Chicago/Turabian Style
Leclère, Mélody; Bernard, Laurent; Livi, Sébastien; Bardet, Michel; Guillermo, Armel; Picard, Lionel; Duchet-Rumeau, Jannick. 2018. "Gelled Electrolyte Containing Phosphonium Ionic Liquids for Lithium-Ion Batteries." Nanomaterials 8, no. 6: 435.
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