Abstract

Pectin-based membranes with different salts such as LiClO4, KCl, LiClO4-Ir(III) and KCl-Ir(III) contents were prepared and characterized. The most conductive sample of Pectin@KCl exhibits the ionic conductivity of 1.45 × 10−3 S.cm−1 and 6.31 × 10−3 S.cm−1 at 25°C and 90°C, respectively. The X-ray diffraction (XRD) analysis reveals the predominantly amorphous nature of the samples and the atomic force microscopy (AFM) images show a roughness of 21.8 and 10.5 nm for the samples of Pectin@KCl and Pectin@LiClO4, respectively. The overall redox stability of 7.0 V suggests that this material has an acceptable stability window for an application in solid state electrochemical devices.

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