Preparation and conductivity of polyvinyl alcohol (PVA) films composited with molybdotungstovanadogermanic heteropoly acid

In this work, the polyvinyl alcohol (PVA) films composited with molybdotungstovanadogermanic heteropoly acid were prepared. Infrared spectra (IR) revealed that the Keggin structure characteristic of the GeMo2W9VO405− anion was present in PVA films. At room temperature (20 °C), the conductivity of the samples of different HPA content increased from 2.46×10−3 to 9.92×10−3 S cm−1. The results indicated that they are new kind of excellent high-proton conductor.