期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 120, 期 23, 页码 12377-12384出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.6b03273
关键词
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资金
- National Natural Science Foundation of China [11502109, 11372132, 61474063, 11302100]
- Jiangsu NSF [SBK2015022205]
- Innovation Fund of NUAA [NE2015102]
- SIC Funding of NUAA [0415G02]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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.
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