Porosity development of templated porous carbons dried by vacuum as carbon electrodes for electric double-layer capacitors

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dc.contributor.authorKraiwattanawong, Kriangsak
dc.date.accessioned2026-08-06T10:41:14Z
dc.date.available2026-08-06T10:41:14Z
dc.date.issued2023-03-15
dc.description.abstractResorcinol and formaldehyde (RF) resin serves as the carbon precursor for porous carbons and carbon/carbon composites possessing a high specific surface area (SSA). This work presents the porosity improvement by the elimination of cotton fibers (CF) from CF/RF composite hydrogels subsequently exchanged by tertiary butyl alcohol (TBA), dried by vacuum, and carbonized. This route contributes the templated porous carbons (TPC) with an asymmetric structure comprising micropores, mesopores, and macropores. At 0.25 of the CF/RF weight ratio, TPC dried by vacuum apparatus has SSA of 2,102 m<sup>2</sup> g<sup>−1</sup>, whereas TPC dried by evaporation only offers SSA of 663 m<sup>2</sup> g<sup>−1</sup>. Using the vacuum acts as pseudo-freeze drying during TBA removal, forming sponge-like carbon and allowing ultra-high SSA. The electrochemical properties of vacuumed TPCs were analyzed, showing that TPC at 0.25 of the CF/RF weight ratio possessed 626 F g<sup>−1</sup> more than TPC at 0.00 of the CF/RF weight ratio which had 392 F g<sup>−1</sup> at 200 mA g<sup>−1</sup>.
dc.identifier.citationChemical Engineering Science, 268, 2023
dc.identifier.doi10.1016/j.ces.2022.118401
dc.identifier.issn00092509
dc.identifier.other2-s2.0-85144626504
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/14348
dc.sourceChemical Engineering Science
dc.subjectElectric double layer
dc.subjectEnergy storage
dc.subjectPorosity development
dc.subjectPorous carbon
dc.titlePorosity development of templated porous carbons dried by vacuum as carbon electrodes for electric double-layer capacitors
dc.typeArticle

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