Enhanced Actuation Response of Nafion-Based Ionic Polymer Metal Composites by Doping BaTiO3 Nanoparticles

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• 作者：Kan Bian ; Hongguang Liu ; Guoan Tai ; Kongjun Zhu ; Ke Xiong
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：June 16, 2016
• 年：2016
• 卷：120
• 期：23
• 页码：12377-12384
• 全文大小：557K
• 年卷期：0
• ISSN：1932-7455

文摘

Nafion-based composite membranes by doping BaTiO₃ nanoparticles were prepared to fabricate high-performance ionic polymer metal composite (IPMC) actuators. BaTiO₃/Nafion nanocomposites were evaluated in terms of their static mechanical properties, water uptake, surface resistivity, electrochemical impedance, and actuation behaviors. The results show that the BaTiO₃/Nafion-based IPMCs have higher ionic conductivity and capacitance and better actuator behavior in comparison with the pure Nafion-based counterpart. The membrane with 3 wt % BaTiO₃ nanoparticles exhibits the best overall property under a 3 V dc or ac voltage excitation: exceptional deflections are obtained up to 101.4% under the dc input and 250% under the ac input at a frequency of 1 Hz; the blocking force is increased over 375% at the dc input, in sharp contrast to the pure Nafion sample. The improvements are attributed to the double-layer electrostatic effect which is induced by the broad dispersion of penetrated nanoparticles into electrodes. This study provides an innovative approach to develop high-performance IPMC actuators.