We report a general strategy for making bicontinuous conducting composite materials in a controllable fashion. Our approach begins with a bicontinuous interfacially jammed emulsion gel (bijel) fabricated from a pre-mix containing a salt, here bis(trifluoromethane)sulfonimide lithium salt (LiTFSI). The resulting structure has interpenetrating ionic conducting and non-conducting domains composed of an ethylene carbonate (EC)-rich phase and a p-xylene (xylene)-rich phase of roughly equal volumes. This is the first time that bijel fabrication has been carried out using a pair of partially miscible liquids whose phase behaviour has been modified due to the addition of salt. Diffusing polystyrene (PS) into the xylene-rich phase enables the facile formation of a PS-filled bijel in place of a multi-step polymerization of added monomers. Drying the bijel results in the selective removal of xylene, reducing the total sample volume without compromising the morphology of the EC domain. Electrochemical impedance spectroscopy of the composite electrolytes confirms the existence of ion conducting pathways.

中文翻译：

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使用含锂盐的预混合物将Bijels直接转化为双连续复合电解质† ‡

我们报告了一种以可控方式制造双连续导电复合材料的一般策略。我们的方法始于由含盐（此处为双（三氟甲烷）磺酰亚胺锂盐）（LiTFSI）的预混合物制成的双连续界面堵塞的乳液凝胶（bijel）。所得结构具有互穿的离子导电域和非导电域，该域由富含碳酸亚乙酯（EC）的相和p-富含二甲苯（二甲苯）的相，体积大致相等。这是第一次使用一对部分可混溶的液体进行了比耶尔的制造，这些液体的相行为由于添加了盐而得到了改善。将聚苯乙烯（PS）扩散到富含二甲苯的相中，可以轻松形成PS填充的胆石，代替添加的单体的多步聚合反应。干燥胆汁可选择性除去二甲苯，减少总样品量，而不会影响EC域的形态。复合电解质的电化学阻抗谱证实了离子传导途径的存在。