Electrochemical characterization of polymer actuator with large interfacial area

• Published in: Electrochimica acta Vol. 47; no. 13; pp. 2341 - 2346
• Main Authors: Noh, Tae-Geun, Tak, Yongsug, Nam, Jae-Do, Choi, Hyoukryeol
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier Ltd 25.05.2002; Elsevier
• Subjects: Chemistry; Electrochemical impedance spectroscopy (EIS); Electrochemistry; Equivalent ionic conductivity; Exact sciences and technology; General and physical chemistry; Ionic polymer metal composite (IPMC); Replication method; Study of interfaces; Transport phenomena; Equivalent ionic conductivity; Replication method; Ionic polymer metal composite (IPMC); Electrochemical impedance spectroscopy (EIS); Electrode impedance; Scanning electron microscopy; Membrane electrode; Fluorine containing polymer; Ionic conductivity; Electrode electrolyte interface; Transition metal; Experimental study; Transients; Transport process; Cyclic voltammetry; Sulfonate polymer; Platinum; Composite electrode
• ISSN: 0013-4686; 1873-3859
• DOI: 10.1016/S0013-4686(02)00089-0

Actuating and electrochemical behaviors of nafion-based electrode were strongly dependent on the interfacial area between the electrode and the polymer electrolyte. A replication method was utilized to manufacture a large surface-area composite actuator. Measurement of double layer charging and scanning electron microscopy indicated that the interfacial area could be greatly increased by replication method. Larger interfacial area induced a better bending performance of ionic polymer metal composite (IPMC) (the magnitude of IPMC increased about 50% at 3 V). The surface resistance of IMPC and the effects of cations on IPMC were investigated with constant current experiment, cyclic voltammetry and electrochemical impedance spectroscopy (EIS).