Polyacrylonitrile (PAN)–based gel polymer electrolytes (GPEs) consisting of plasticizers ethylene carbonate (EC) and propylene carbonate (PC) and different compositions of tetrabutylammonium iodide (TBAI) salt have been investigated. The GPEs have been characterized by electrochemical impedance spectroscopy (EIS), linear sweep voltammetry (LSV), and X-ray diffraction (XRD) techniques. EIS study shows that the GPE containing 30 wt% TBAI has the lowest bulk impedance, R_b (23 Ω), and highest room temperature ionic conductivity (3.46 × 10⁻³ S cm⁻¹). Conductivity-temperature relationship in the temperature range studied obeys Arrhenius rule. The E_a value is decreased with TBAI percentage and is the lowest (12.59 kJ/mol) for GPE containing 30 wt% TBAI. From LSV experimental data, the limiting current density (J_lim), apparent diffusion coefficient of triiodide ion (\( {D}_{I_3^{-}}^{\ast } \)), and exchange current density (J₀) have been calculated. The highest value for each of these parameters is 5.00 mA cm⁻², 6.59 × 10⁻⁷ cm² s⁻¹, and 0.63 mA cm⁻², respectively, for the highest conducting GPE. All samples are amorphous. LSV at stainless steel showed that the electrochemical stability window is 2.2 V. The cyclic voltammetry (CV) was performed from 1 to 1000 cycle which showed good electrochemical stability.

中文翻译：

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聚丙烯腈（PAN）基凝胶聚合物电解质与四丁基碘化铵共混的电化学和结构表征，可能在染料敏化太阳能电池中应用

已研究了由增塑剂碳酸亚乙酯（EC）和碳酸亚丙酯（PC）组成的基于聚丙烯腈（PAN）的凝胶聚合物电解质（GPE）以及不同组成的碘化四丁基铵（TBAI）盐。GPE的特征在于电化学阻抗谱（EIS），线性扫描伏安法（LSV）和X射线衍射（XRD）技术。EIS研究表明，含30wt％TBAI的GPE具有最低的体阻抗R _b（23Ω ）和最高的室温离子电导率（3.46×10 ^-3  S cm ^-1）。在所研究的温度范围内，电导率-温度关系遵循阿伦尼乌斯法则。该Ë_一TBAI百分比会降低该值，对于含30 wt％TBAI的GPE，该值最低（12.59 kJ / mol）。根据LSV实验数据，极限电流密度（J _lim），三碘化物离子的表观扩散系数（\（{D} _ {I_3 ^ {-}} ^ {\ ast} \））和交换电流密度（J ₀）已计算。对于每个这些参数的最高值是5.00毫安厘米^-2，6.59×10 ^-7 厘米² 小号^-1，和0.63毫安厘米^-2分别用于导电性最高的GPE。所有样品均为无定形。不锈钢的LSV显示电化学稳定性窗口为2.2V。循环伏安法（CV）在1至1000个循环中进行，显示出良好的电化学稳定性。