期刊
ELECTROCHIMICA ACTA
卷 56, 期 27, 页码 9838-9845出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2011.08.079
关键词
Conducting polymer; Polypyrrole; MnO2; Supercapacitor, Polypropylene
资金
- National Natural Science Foundation of China [21073115, 20604014]
- Natural Science Foundation of Shanxi Province [2007021008)]
- Program for New Century Excellent Talents in University of China [NCET-10-0926]
- Program for the Top Young and Middle-aged Innovative Talents of Higher Learning Institutions of Shanxi Province (TYMIT and TYAL)
The composites of polypyrrole/manganese dioxide/polypropylene fibrous films (PPy/MnO2/PPF) have been prepared in situ through chemical oxidation polymerization by using the mixture of FeCl3 center dot 6H(2)O and MnO2 adsorbed on PPF as oxidant in the atmosphere of pyrrole vapor at room temperature. The morphologies and structures of the composites are investigated by using scanning electron microscope and X-ray diffraction spectroscopy. The properties of the capacitor cells assembled by the composites of PPy/MnO2/PPF are evaluated by cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectroscopy methods. The results reveal that the morphologies, conductivities and capacitance performance of the composites are influenced strongly by the content of MnO2 in the solution of oxidant. The capacitors assembled by PPy/MnO2/PPF exhibit the property of quick charge/discharge, and the highest specific capacitance of about 110 Fg(-1) is obtained when the PPy/MnO2 content in the composite is about 17.4%. (C) 2011 Elsevier Ltd. All rights reserved.
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