Integrated polypyrrole and amorphous carbon hybrid films
2013 (English)Conference paper, Abstract (Other academic)
Although electroactive materials based on conducting polymers have improved considerably during the last two decades, further improvement, especially with regards to strain and speeds are required. Here, we present a novel concept of synthesizing hybrid materials comprising polypyrrole (PPy) and carbonaceous materials in order to increase the performance. Hybrid electroactive films composed of nanoporous amorphous carbon and PPy were successfully electropolymerized. PPy and the carbon materials were integrated to form a continuous film without additional binder which is often an insulator and inevitably reduces the electrical and electrochemical performance. The incorporation of nanoporous carbon in film structure was verified using ATR-FTIR. The redox behavior of PPy/carbon hybrid and PPy films, as well as electrochemical capacitance properties were investigated using cyclic voltammetry and electrochemical impedance spectroscopy (EIS) methods. The conductive polymer-carbonaceous films exhibited good electrochemical reversibility during cycling. The surface morphology of the polymer hybrids were investigated with SEM. The porous structure of PPy/carbon hybrid considerably increases the area of the electrolyte/composite film interface, which is leading to higher electric double-layer capacitance and higher redox capacitance, and leaving adequate working space to assure facile electrolyte penetration and better faradaic utilization of the electroactive PPy.
Place, publisher, year, edition, pages
Textile, Rubber and Polymeric Materials
IdentifiersURN: urn:nbn:se:liu:diva-100392OAI: oai:DiVA.org:liu-100392DiVA: diva2:661931
International conference on Electromechanically Active Polymer (EAP) transducers and artifical muscles. EuroEAP Dübendorf Schweiz, 25-26 June 2013