ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
Composite actuators consisting of sheets of the solid polymer electrolyte (similar toNafion®) with Cu2+ counter-ions inserted and coated with platinum and copper metal layers (socalled Ionomeric Polymer-Metal Composites; IPMC-s) have been synthesized and theirelectromechanical performance upon actuation has been monitored. Resistivity measurements onthe electrodes show that the electrical conductivity of the membranes metal surface increases on thecathode side during the actuation process, contradictory to the situation when Cu is absent from themetal coating. This phenomenon is explained by the subsequent reduction of Cu2+ ions on thecathode upon actuation; Cu layer growth in this side prevents it from cracking and decreases itselectrode resistance. The phenomenon opens up for longer life-times for Cu-based IPMC-s.However, additional problems with Cu layer oxidation and Cu dendrite growth on the electrodesshould be considered
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.61.75.pdf
