Novel solid polymer electrolytes (SPEs), comprising of comb polymer matrix grafted with soft and disordered polyether moieties (Jeffamine^®) and lithium bis(fluorosulfonyl)imide (LiFSI) are investigated in all-solid-state lithium metal (Li°) polymer cells. The LiFSI/Jeffamine-based SPEs are fully amorphous at room temperature with glass transitions as low as ca. −55 °C. They show higher ionic conductivities than conventional poly(ethylene oxide) (PEO)-based SPEs at ambient temperature region, and good electrochemical compatibility with Li° electrode. These exceptional properties enable the operational temperature of Li° | LiFePO₄ cells to be decreased from an elevated temperature (70 °C) to room temperature. Those results suggest that LiFSI/Jeffamine-based SPEs can be promising electrolyte candidates for developing safe and high performance all-solid-state Li° batteries.

软，无序聚醚部分（的Jeffamine接枝新颖的固体聚合物电解质（SPE）的方法，包括梳形聚合物基质的^®）和锂双（氟磺酰）亚胺（的LiFSI）在全固态锂金属（锂°）聚合物的细胞进行了研究。基于LiFSI / Jeffamine的SPE在室温下是完全无定形的，玻璃化转变温度低至约。−55°C。与传统的聚环氧乙烷（PEO）基SPE相比，它们在环境温度范围内显示出更高的离子电导率，并且与Li°电极具有良好的电化学相容性。这些优异的性能使Li°| L的工作温度达到最大值。磷酸铁锂₄细胞要从高温（70°C）降低到室温。这些结果表明，基于LiFSI / Jeffamine的SPE有望成为开发安全，高性能全固态Li°电池的有希望的电解质候选者。