A new family of solid polymer electrolytes based upon anionic tetrakis(phenyl)borate tetrahedral nodes and linear bis-alkyne linkers is reported. Sonogashira polymerizations using tetrakis(4-iodophenyl)borate, tetrakis(4-iodo-2,3,5,6-tetrafluorophenyl)borate and tetrakis(4-bromo-2,3,5,6-tetrafluorophenyl)borate delivered highly cross-linked polymer networks with both 1,4-diethynylbeznene and a tri(ethylene glycol) substituted derivative. Promising initial conductivity metrics have been observed, including high room temperature conductivities (up to 2.7 × 10−4 S cm−1), moderate activation energies (0.25–0.28 eV), and high lithium ion transport numbers (up to tLi+ = 0.93). Initial investigations into the effects of important materials parameters such as bulk morphology, porosity, fluorination, and other chemical modification, provide starting design parameters for further development of this new class of solid electrolytes.
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机译：报道了基于阴离子四（苯基）硼酸酯四面体节点和线性双炔烃连接体的固体聚合物电解质的新家族。使用四（4-碘苯基）硼酸酯，四（4-碘-2,3,5,6-四氟苯基）硼酸酯和四（4-溴-2,3,5,6-四氟苯基）硼酸酯的Sonogashira聚合反应提供了高度交叉的1，4-二乙炔和三（乙二醇）取代的衍生物连接聚合物网络。已经观察到有希望的初始电导率指标，包括较高的室温电导率（高达2.7×10-4 S cm-1），中等的活化能（0.25-0.28 eV）和较高的锂离子迁移数（高达tLi + = 0.93） 。对重要材料参数（例如本体形态，孔隙率，氟化和其他化学修饰）的影响的初步研究为进一步开发这类新型固体电解质提供了初步的设计参数。
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