Experimental investigation on electrochemical properties of ionic polymer-metal composite

被引:28
|
作者
Kim, D [1 ]
Kim, KJ [1 ]
机构
[1] Univ Nevada, Dept Mech Engn, Act Mat & Proc Lab, Reno, NV 89557 USA
关键词
electrochemistry; ionic polymer-metal composites (IPMCs);
D O I
10.1177/1045389X06058871
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Platinum has been used as an effective electrode material for ionic polymer-metal composite (IPMC) actuators. Realizing that platinum is a common catalyst for many electrochemical reactions; the platinum surface in IPMCs 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 electrochemical characteristics of platinum are important in understanding the fundamental actuation mechanism of IPMCs. Electrochemical analyses, including voltammetry, AC impedance, and capacitance measurements, on IPMC samples are carried out in aqueous solutions. Such experimental results reveal the complex electrochemical behavior of IPMCs, including inductive behavior in higher frequencies than has originally been expected. The Mott-Schottky experiment is 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.
引用
收藏
页码:449 / 454
页数:6
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