The volumetric capacitance of microporous carbons in organic electrolyte
The study of 26 microporous carbons with average pore widths Lo between 0.7 and 1.8 nm shows that the volume-related capacitance Cmi (F cm− 3) in the organic electrolyte (C2H5)4NBF4/acetonitrile is an inverse function of the average micropore width Lo. This means that for a given micropore volume Wo, the gravimetric capacitance C (F g− 1) is larger for carbons with smaller pores due to the higher surface to volume ratio. Furthermore, the increase of Cmi (F cm− 3) in smaller pores suggests that the surface-related capacitance C (F m− 2) should be relatively constant in slit-shaped micropores. This has important technological consequences for the design of carbon-based supercapacitors.
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| Main Authors: | , |
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| Format: | artículo biblioteca |
| Language: | English |
| Published: |
Elsevier
2012-03
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| Subjects: | Supercapacitor, Volumetric capacitance, Surface capacitance, Carbon, Porosity, |
| Online Access: | http://hdl.handle.net/10261/102295 |
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