Facile synthesis of functionalized porous carbon with three-dimensional interconnected pore structure for high volumetric performance supercapacitors
Functionalized porous carbon with three-dimensional (3D) interconnected pore structure has been successfully synthesized through direct heat-treatment of KOH-soaked soybeans. Benefiting from heteroatoms (N, O) doping, interconnected porous carbon framework with high surface area as well as high pack...
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Veröffentlicht in: | Carbon (New York) 2015-11, Vol.93, p.412-420 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Functionalized porous carbon with three-dimensional (3D) interconnected pore structure has been successfully synthesized through direct heat-treatment of KOH-soaked soybeans. Benefiting from heteroatoms (N, O) doping, interconnected porous carbon framework with high surface area as well as high packing density (up to 1.1gcm−3), the as-obtained porous carbon material exhibits high volumetric capacitance of 468Fcm−3, good rate capability and excellent cycling stability (91% of capacitance retention after 10,000 cycles) in 6M KOH electolyte. More importantly, the as-assembled symmetric supercapacitor delivers high volumetric energy density of 28.6WhL−1 in 1M Na2SO4 aqueous solution. |
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ISSN: | 0008-6223 1873-3891 |
DOI: | 10.1016/j.carbon.2015.05.040 |