Influence of temperature on the impedance of ionic polymer metal composites

Youngsu Cha; Hubert Kim; Maurizio Porfiri

doi:10.1016/j.matlet.2014.06.183

Influence of temperature on the impedance of ionic polymer metal composites

Youngsu Cha, Hubert Kim, Maurizio Porfiri

Mechanical and Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

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)
Pages (from-to)	179-182
Number of pages	4
Journal	Materials Letters
Volume	133
DOIs	https://doi.org/10.1016/j.matlet.2014.06.183
State	Published - Oct 15 2014

Keywords

Diffusion
Ionic polymer metal composites (IPMCs)
Thermal analysis

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matlet.2014.06.183

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title = "Influence of temperature on the impedance of ionic polymer metal composites",

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.",

keywords = "Diffusion, Ionic polymer metal composites (IPMCs), Thermal analysis",

author = "Youngsu Cha and Hubert Kim and Maurizio Porfiri",

note = "Funding Information: This letter is based upon work supported by the National Science Foundation under Grant No. CMMI-0926791 and the Mitsui USA Foundation . Also, the authors are grateful to Dr. Ross Anderson for his help with the statistical analysis.",

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T1 - Influence of temperature on the impedance of ionic polymer metal composites

AU - Cha, Youngsu

AU - Kim, Hubert

AU - Porfiri, Maurizio

N1 - Funding Information: This letter is based upon work supported by the National Science Foundation under Grant No. CMMI-0926791 and the Mitsui USA Foundation . Also, the authors are grateful to Dr. Ross Anderson for his help with the statistical analysis.

PY - 2014/10/15

Y1 - 2014/10/15

N2 - 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.

AB - 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.

KW - Diffusion

KW - Ionic polymer metal composites (IPMCs)

KW - Thermal analysis

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VL - 133

SP - 179

EP - 182

JO - Materials Letters

JF - Materials Letters

ER -

Influence of temperature on the impedance of ionic polymer metal composites

Abstract

Keywords

ASJC Scopus subject areas

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