期刊
SYNTHETIC METALS
卷 161, 期 13-14, 页码 1255-1258出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2011.04.019
关键词
Polyaniline; Electropolymerization; Nano-sized; Supercapacitor
资金
- National Basic Research Program of China [2007CB613300]
- National Nature Science Foundation of China [51004008]
Nano-sized polyaniline (PANI) films were electrochemically deposited onto an ITO substrate by a pulse galvanostatic method (PGM) in an aqueous solution. The morphology of the as-prepared PANI film was characterized using a field emission scanning electron microscope (FESEM). It was observed that the as-prepared PANI films were highly porous, and showed a nano-sized rod-like or coralline-like morphology depending on the charge loading performed in the electropolymerization process. Furthermore, the PANI films were electrochemically measured by the galvanostatic charge-discharge (GCD), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) tests in 1 mol L-1 HClO4 solution. The results showed that such PANI films had a favorable electrochemical activity and an excellent capacitance. The rod-like PANI film prepared with the charge loading of 1000 mC showed the highest discharge capacitance of 569.1 F g(-1) at a low current density of 1 A g(-1). The discharge capacitance retained 97.7% after 1000 cycles at a large current density of 10 A g(-1). (C) 2011 Elsevier B.V. All rights reserved.
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