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Proceedings Paper

Electrochemistry of ionic polymer-metal composite
Author(s): Doyeon Kim; Kwang Jin Kim
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Paper Abstract

Platinum has been used as an effective electrode material for Ionic Polymer-Metal Composites (IPMCs) actuators. Realizing that platinum is a strong catalyst for many electrochemical reactions, the platinum surface allows many components to be adsorbed. Therefore, under imposed electrical potentials, platinum electrodes used for IPMCs introduce complex electrochemical phenomena on the platinum/electrolyte interface. This study points out that the electrochemistry of platinum is important in understanding the fundamental actuation mechanism of IPMCs. Electrochemical analyses, including voltammetry, AC impedance, and capacitance measurements, on IPMC samples were carried out in aqueous solutions. The experiments revealed the complex electrochemical behavior of IPMCs, including inductive behavior in higher frequencies than had originally been expected. The Mott-Schottky experiment was also performed to investigate the charge transfer and the possible adsorption mechanism associated with IPMCs. Seemingly, the equivalent circuit of IPMC follows a RLC circuit.

Paper Details

Date Published: 6 May 2005
PDF: 6 pages
Proc. SPIE 5759, Smart Structures and Materials 2005: Electroactive Polymer Actuators and Devices (EAPAD), (6 May 2005); doi: 10.1117/12.592054
Show Author Affiliations
Doyeon Kim, Univ. of Nevada/Reno (United States)
Kwang Jin Kim, Univ. of Nevada/Reno (United States)

Published in SPIE Proceedings Vol. 5759:
Smart Structures and Materials 2005: Electroactive Polymer Actuators and Devices (EAPAD)
Yoseph Bar-Cohen, Editor(s)

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