Fundamental Understanding of Nanoporous Carbons for Energy Application Potentials

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The importance of nanopore structures of carbons is shown in terms of interaction potential for various molecules including supercritical gases such as <TEX>$H_2$</TEX> and <TEX>$CH_4$</TEX>. The key factors for adsorption of supercritical <TEX>$H_2$</TEX> and <TEX>$CH_4$</TEX> are shown for single wall carbon nanohorn, single wall carbon nanotube, and double wall carbon nanotube. The cluster formation of molecules is a key process for water adsorption on hydrophobic carbon nanopores. The X-ray absorption spectroscopic examination elucidates an explicit dehydration structure of ions confined in carbon nanopores.