Characterization of carbon cryogel synthesized by sol-gel polycondensation and freeze-drying
Abstract
Resorcinol-formaldehyde (RF) cryogels were synthesized by sol-gel polycondensation of resorcinol with formaldehyde and freeze-drying was carried out with t-butanol. Carbon cryogels were obtained by pyrolyzing RF cryogels in an inert atmosphere. Characterization by nitrogen adsorption showed that carbon cryogels were micro and mesoporous materials with high surface areas (500 m(2)/g LT S-BET LT 750 m(2)/g). Cyclic voltammetry experiments at various scan rates (2-200 mV s(-1)) have been performed to study the electrical double-layer charging of carbon cryogel electrodes in 0.5 mol dm(-3) HClO4 solution. It has been demonstrated that it is possible to divide further total specific capacitance into mesoporous and microporous specific capacitance by analyzing the linear dependence of the specific capacitance (C) on the reciprocal of the square root of the potential scan rate (v(-1/2)), and linear dependence of the reciprocal specific charge (1/C) on the square root of the potential scan rat...e (v(1/2)). (C) 2004 Elsevier Ltd. All rights reserved.
Keywords:
porous carbon / carbonization / BET surface area / electrochemical properties / porositySource:
Carbon, 2004, 42, 12-13, 2617-2624
DOI: 10.1016/j.carbon.2004.05.046
ISSN: 0008-6223
WoS: 000223753200032
Scopus: 2-s2.0-4043123944
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Babić, Biljana M. AU - Kaluđerović, Branka V. AU - Vracar, Lj. AU - Krstajic, N PY - 2004 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5409 AB - Resorcinol-formaldehyde (RF) cryogels were synthesized by sol-gel polycondensation of resorcinol with formaldehyde and freeze-drying was carried out with t-butanol. Carbon cryogels were obtained by pyrolyzing RF cryogels in an inert atmosphere. Characterization by nitrogen adsorption showed that carbon cryogels were micro and mesoporous materials with high surface areas (500 m(2)/g LT S-BET LT 750 m(2)/g). Cyclic voltammetry experiments at various scan rates (2-200 mV s(-1)) have been performed to study the electrical double-layer charging of carbon cryogel electrodes in 0.5 mol dm(-3) HClO4 solution. It has been demonstrated that it is possible to divide further total specific capacitance into mesoporous and microporous specific capacitance by analyzing the linear dependence of the specific capacitance (C) on the reciprocal of the square root of the potential scan rate (v(-1/2)), and linear dependence of the reciprocal specific charge (1/C) on the square root of the potential scan rate (v(1/2)). (C) 2004 Elsevier Ltd. All rights reserved. T2 - Carbon T1 - Characterization of carbon cryogel synthesized by sol-gel polycondensation and freeze-drying EP - 2624 EP - ARR IS - 12-13 SP - 2617 VL - 42 DO - 10.1016/j.carbon.2004.05.046 ER -
@article{ author = "Babić, Biljana M. and Kaluđerović, Branka V. and Vracar, Lj. and Krstajic, N", year = "2004", abstract = "Resorcinol-formaldehyde (RF) cryogels were synthesized by sol-gel polycondensation of resorcinol with formaldehyde and freeze-drying was carried out with t-butanol. Carbon cryogels were obtained by pyrolyzing RF cryogels in an inert atmosphere. Characterization by nitrogen adsorption showed that carbon cryogels were micro and mesoporous materials with high surface areas (500 m(2)/g LT S-BET LT 750 m(2)/g). Cyclic voltammetry experiments at various scan rates (2-200 mV s(-1)) have been performed to study the electrical double-layer charging of carbon cryogel electrodes in 0.5 mol dm(-3) HClO4 solution. It has been demonstrated that it is possible to divide further total specific capacitance into mesoporous and microporous specific capacitance by analyzing the linear dependence of the specific capacitance (C) on the reciprocal of the square root of the potential scan rate (v(-1/2)), and linear dependence of the reciprocal specific charge (1/C) on the square root of the potential scan rate (v(1/2)). (C) 2004 Elsevier Ltd. All rights reserved.", journal = "Carbon", title = "Characterization of carbon cryogel synthesized by sol-gel polycondensation and freeze-drying", pages = "2624-ARR-2617", number = "12-13", volume = "42", doi = "10.1016/j.carbon.2004.05.046" }
Babić, B. M., Kaluđerović, B. V., Vracar, Lj.,& Krstajic, N.. (2004). Characterization of carbon cryogel synthesized by sol-gel polycondensation and freeze-drying. in Carbon, 42(12-13), 2617-2624. https://doi.org/10.1016/j.carbon.2004.05.046
Babić BM, Kaluđerović BV, Vracar L, Krstajic N. Characterization of carbon cryogel synthesized by sol-gel polycondensation and freeze-drying. in Carbon. 2004;42(12-13):2617-2624. doi:10.1016/j.carbon.2004.05.046 .
Babić, Biljana M., Kaluđerović, Branka V., Vracar, Lj., Krstajic, N, "Characterization of carbon cryogel synthesized by sol-gel polycondensation and freeze-drying" in Carbon, 42, no. 12-13 (2004):2617-2624, https://doi.org/10.1016/j.carbon.2004.05.046 . .