期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 2, 期 15, 页码 5236-5243出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta15245f
关键词
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资金
- KAUST baseline fund
Porous activated nanocarbons with well-controlled dimensionality and morphology (i.e. 0D activated carbon nanoparticles, 1D activated carbon nanotubes, and 2D activated carbon nanosheets) were derived successfully from different template-induced polyaniline nanostructures by facile carbonization and activation processes. The obtained nanocarbons show large specific surface areas (1332-2005 m(2) g(-1)), good conductivities, and highly porous nanoscale architectures. The supercapacitors fabricated using the shape-controlled nanocarbons exhibit high specific capacitance, excellent rate capability, and superior long-term cycling stability in both aqueous and ionic liquid electrolytes. More importantly, a very high energy density of 50.5 W h kg(-1) with a power density of 17.4 kW kg(-1) can be obtained from the activated carbon nanotube based supercapacitors in an ionic liquid electrolyte (with a charge time of similar to 10 s), making these nanocarbons promising candidates for high-performance energy storage devices.
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