Synthesis of phosphorus containing polyethers and their lithium-ion conductivities for the potential use as solid polymer electrolyte (SPE) in high-energy density lithium-ion batteries have been described. Co-polymerization of butyl bis(hydroxymethyl)phosphine oxide with three different dibromo monomers were carried out to produce three novel phosphorous containing polyethers (P1–P3). These polymers were obtained via nucleophilic substitution reactions and were characterized by 1H, 31P NMR spectral data and gel permeation chromatography. SPEs were prepared using polyethers (P1 and P2) with various amounts of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). The lithium-ion conductivity of SPE2 containing 40 wt% of LiTFSI was 2.1 × 10−5 S cm−1 at room temperature and 3.7 × 10−4 S cm−1 at 80°C.
本研究介绍了含
磷聚醚的合成及其
锂离子传导性,这些聚醚可用作高能量密度
锂离子电池的固体聚合物电解质(
SPE)。丁基双(羟甲基)氧化膦与三种不同的二
溴单体进行了共聚合,生成了三种新型含
磷聚醚(P1-P3)。这些聚合物是通过亲核取代反应获得的,并通过 1H、31P NMR 光谱数据和凝胶渗透色谱法进行了表征。使用聚醚(P1 和 P2)与不同量的双(三
氟甲磺酰)
亚胺锂(LiTFSI)制备了
SPE。含 40 wt% LiTFSI 的
SPE2 在室温下的
锂离子电导率为 2.1 × 10-5 S cm-1,在 80°C 时为 3.7 × 10-4 S cm-1。