Abstract
In this letter, we study the effect of temperature on the electric impedance of ionic polymer metal composites (IPMCs). Experiments are performed on in-house fabricated Nafion-based samples for temperatures varying from 25 to 40 °C. By using a recently proposed physics-based circuit model, we identify the equivalent resistance, capacitance and Warburg impedance of each sample, and characterize their dependence on temperature. We find that the resistance and the capacitance decrease as the temperature increases, while the Warburg impedance increases. Such variations are ultimately associated with the effect of temperature on the dielectric constant and the diffusivity of the IPMC.
Original language | English (US) |
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Pages (from-to) | 179-182 |
Number of pages | 4 |
Journal | Materials Letters |
Volume | 133 |
DOIs | |
State | Published - Oct 15 2014 |
Keywords
- Diffusion
- Ionic polymer metal composites (IPMCs)
- Thermal analysis
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering