期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 116, 期 50, 页码 26185-26189出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp3083387
关键词
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资金
- National Basic Research Program of China [2012CB932301]
- Natural Science Foundation of China [51173098, 10721404]
In this work, a well-constructed carbon nanotube (CNT) mesh/polyaniline (PANI) composite film was fabricated as the electrode of flexible supercapacitor via alternatively cross-stacking superaligned CNT sheets and in situ coating PANI from chemical solution. Compared with other CNT/PANI composites using random-constructed CNT network as backbone, this composite has a remarkable uniform and oriented structure in both the plane and thickness direction with a thickness as low as 0.8 mu m. As its electrode thickness can be easy-controlled, the electrode thickness dependence of the assembled supercapacitor performance was precisely measured, and the possible cause was analyzed. The results showed that there exists an optimal electrode thickness of about 5 mu m or less for achieving the highest electrode specific capacitance, energy density, and power density. Its highest electrode power density (9.0 kW kg(-1)) is much higher than that of the ever reported CNT/PANI composites prepared by other methods. Such composite may have great application potentials on new flexible devices for energy storage.
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