Lee, Yunsu Yoon, Ji Sun Suh, Dong Jin Lee, Chang-Ha Suh, Young-Woong 2024-01-20T13:34:56Z 2024-01-20T13:34:56Z 2021-09-05 2012-10-15 0254-0584 https://pubs.kist.re.kr/handle/201004/128760 To explore a potential of 5-hydroxymethylfurfural (HMF) in the preparation of carbon aerogels, phloroglucinol HMF furfural (PHF) and phloroglucinol HMF (PH) alcogels were synthesized. It was found in PHF carbon aerogels that the addition of HMF led to a change in their surface chemical properties, i.e., the favorable formation of surface C-O and O=C-O groups. When phloroglucinol and HMF were used as a carbon monomer, PH alcogels were formed at room temperature within tens of minutes. The resulting PH carbon aerogels showed a surface area of 975 1290 m(2) g(-1), a pore size distribution centered at about 30 nm, and a pore volume of 1.35-1.86 cm(3) g(-1). As a result of varying several preparation variables, their surface chemical properties were different in accordance with PHF samples. Additionally, a cyclic voltammetry test was conducted, resulting in the fact that the gravimetric capacitance of PHF and PH carbon aerogels showed strong dependence on their chemical characteristics. It was consequently revealed that, due to the peculiar structure of HMF, the preferential formation of C-O linkages through intermolecular dehydration occurs along with unreacted phenolic hydroxyl species of phloroglucinol at the surface, thus yielding a higher gravimetric capacitance. (C) 2012 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA DOUBLE-LAYER CAPACITOR FORMALDEHYDE SUPERCAPACITORS RESORCINOL ELECTRODES CATALYST 5-hydroxymethylfurfural as a potential monomer for the preparation of carbon aerogel Article 10.1016/j.matchemphys.2012.08.006 1 MATERIALS CHEMISTRY AND PHYSICS, v.136, no.2-3, pp.837 - 844 MATERIALS CHEMISTRY AND PHYSICS 136 2-3 837 844 scie scopus 000311865400078 2-s2.0-84867404081 Materials Science, Multidisciplinary Materials Science Article DOUBLE-LAYER CAPACITOR FORMALDEHYDE SUPERCAPACITORS RESORCINOL ELECTRODES CATALYST Non-crystalline materials Sol-gel growth Surface properties X ray photo-emission spectroscopy