González Francisco, Tiemblo Pilar, García Nuria, Garcia-Calvo Oihane, Fedeli Elisabetta, Kvasha Andriy, Urdampilleta Idoia
Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain.
CIDETEC Energy Storage, Parque Científico y Tecnológico de Gipuzkoa, Paseo Miramón 196, 20009 Donostia-San Sebastián, Spain.
Membranes (Basel). 2018 Aug 2;8(3):55. doi: 10.3390/membranes8030055.
A polymer/ionic liquid thermoplastic solid electrolyte based on poly(ethylene oxide) (PEO), modified sepiolite (TPGS-S), lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), and 1-Butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (PYRTFSI) ionic liquid is prepared using solvent free extrusion method. Its physical-chemical, electrical, and electrochemical properties are comprehensively studied. The investigated solid electrolyte demonstrates high ionic conductivity together with excellent compatibility with lithium metal electrode. Finally, truly Li-LiFePO₄ solid state coin cell with the developed thermoplastic solid electrolyte demonstrates promising electrochemical performance during cycling under 0.2 C/0.5 C protocol at 60 °C.
采用无溶剂挤出法制备了一种基于聚环氧乙烷（PEO）、改性海泡石（TPGS-S）、双（三氟甲烷磺酰）亚胺锂（LiTFSI）和1-丁基-1-甲基吡咯烷鎓双（三氟甲烷磺酰）亚胺（PYRTFSI）离子液体的聚合物/离子液体热塑性固体电解质。对其物理化学、电学和电化学性质进行了全面研究。所研究的固体电解质表现出高离子电导率以及与锂金属电极的优异相容性。最后，采用所开发的热塑性固体电解质的真正Li-LiFePO₄固态硬币电池在60℃下以0.2 C/0.5 C的充放电速率循环时表现出有前景的电化学性能。
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