期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 9, 期 8, 页码 2088-2092出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2007.06.003
关键词
polyoxometalates; hybrid materials; multiwalled carbon nanotubes; supercapacitors; energy density
We have characterized symmetric solid-state supercapacitors in swagelok cells using film electrodes made of novel hybrid materials based on multiwalled carbon nanotubes (CNT) and phosphomolybdate polyanion (Cs-PMo12) with PVA as binder. These hybrid materials were carried out by Cs-PMo12 as energy density enhancer in supercapacitor cells. Our results show high capacitance values (up to 285 F/g at I = 200 mA/g) due to the contribution of Cs-PMo12, which was revealed on the higher energy density values compared to pure CNT electrodes. Additionally, good stability was observed during 500 charge-discharge cycles for most hybrid electrodes. These preliminary results show a new approach to enhance energy density of double layer supercapacitor cells through the introduction of Cs-PMo12, from supercapacitors (sensors, catalysts, photovoltaic cells, etc.). (C) Elsevier B.V. All rights reserved.
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