In this paper the electrochemistry of ionic polymer-metal composites (IPMCs) is detailed. Up to now the electrochemistry of IPMCs has been less studied. Most studies on IPMCs have been concentrated on electro-mechanical couplings elucidating the fundamental actuation mechanisms and designing engineering devices. Observed experimentally, the scatters of available data on IPMCs actuators are common and reproducibility of design data is low. In this effort we try to understand the basic electrochemistry of IPMCs considering a number of surface reactions under an applied electric field. The importance of electrochemistry in IPMC actuators is realized to understand the actuation mechanism and micromechanics of the materials.
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