Ion conducting gel polymer electrolytes (GPEs) are being intensively studied for their potential applications in various electrochemical devices. The poly(vinyl alcohol)-based GPE films containing ammonium acetate (NH4CH3COO) salt have been studied for various concentrations of salt. The gel electrolyte films (GPEs) have been prepared using solution casting technique. Structural characterization carried out using X-ray diffraction reveals an increase in the amorphous nature of the samples on increasing salt concentration up to 70 wt%. The complexation of polymer and salt has been studied by Fourier-transform infrared analysis. Ionic conductivity of the GPEs has been found to increase with salt concentration and reaches an optimum for an intermediate concentration. The room temperature conductivity isotherm exhibits a maximum in conductivity of 2.64 × 10−4 Scm−1 for 65 wt% salt concentration. The temperature dependence of ionic conductivity exhibits a combination of Arrhenius and Vogel–Tamman–Fulcher behavior. Ion transport in the electrolyte system has been explored using dielectric response of the material and the observed variation in conductivity is suitably correlated to the change in charge carrier concentration and mobility of charge carriers.

中文翻译：

---

PVA:NH4CH3COO凝胶聚合物电解质中的离子传输研究

离子导电凝胶聚合物电解质 (GPE) 正在深入研究其在各种电化学设备中的潜在应用。已经研究了含有醋酸铵 (NH4CH3COO) 盐的基于聚乙烯醇的 GPE 薄膜的各种盐浓度。凝胶电解质膜 (GPE) 已使用溶液浇铸技术制备。使用 X 射线衍射进行的结构表征表明，当盐浓度增加至 70 wt% 时，样品的无定形性质有所增加。通过傅里叶变换红外分析研究了聚合物和盐的络合。已发现 GPE 的离子电导率随着盐浓度的增加而增加，并达到中间浓度的最​​佳值。室温电导率等温线的电导率最大值为 2。64 × 10−4 Scm−1 对于 65 wt% 的盐浓度。离子电导率的温度依赖性表现出 Arrhenius 和 Vogel-Tamman-Fulcher 行为的组合。已经使用材料的介电响应探索了电解质系统中的离子传输，观察到的电导率变化与电荷载流子浓度和电荷载流子迁移率的变化适当相关。