In this work, a method for preparing solid polymer electrolytes with function of single ion conduction (SICs-SPEs) is developed and reported. A solid state ionic conduction path with three-dimensional interpenetrating network was constructed by multi-nozzle electrospinning technology and a followed hot pressed treatment. Here, two components of SICs-SPEs were chosen where one component is a single ion conducting lithium salt with polyanion structure, and the other component is a solid polymer electrolyte matrix with the function of conducting lithium ions in solid state. This stable three-dimensional interpenetrating network structure is beneficial to inhibit the separation of the two components. At the same time, the introduction of hydrophilic and hydrophobic silica (SiO₂) reduces the crystallinity of polyethylene oxide (PEO) and promotes the dissociation of lithium ions, respectively, thereby the ionic conductivity of the prepared single-ion conductor solid polymer electrolyte can be increased to 5.4 × 10⁻⁵ S cm⁻¹ at 60 °C, and the lithium-ion transference number (t_Li+) can be increased to 0.96. This method can also adjust the performance of the solid state polymer electrolyte through balancing the ration of composition by controlling the number of spinning nozzle. It provides a practical way to develop functional solid polymer electrolyte by electrospinning technology with nozzle design.

在这项工作中，开发并报道了一种制备具有单离子传导功能的固体聚合物电解质（SICs-SPEs）的方法。通过多喷嘴静电纺丝技术和后续热压处理构建了具有三维互穿网络的固态离子传导路径。在这里，选择了两种 SICs-SPEs 组分，其中一种组分是具有聚阴离子结构的单离子导电锂盐，另一种组分是具有固态导电锂离子功能的固体聚合物电解质基质。这种稳定的三维互穿网络结构有利于抑制两种成分的分离。同时，亲水性和疏水性二氧化硅（SiO ₂)分别降低聚环氧乙烷(PEO)的结晶度和促进锂离子的解离，从而使制备的单离子导体固体聚合物电解质在60°时的离子电导率提高到5.4×10 ^-5  S cm ^-1 C，并且锂离子转移数（t _Li+）可以增加到0.96。该方法还可以通过控制纺丝喷嘴的数量来平衡成分配比来调节固态聚合物电解质的性能。它为通过喷嘴设计的静电纺丝技术开发功能性固体聚合物电解质提供了一种实用的方法。