Abstract
A series of carbon aerogels (C-AGs) were prepared by the pyrolysis of resorcinol-formaldehyde aerogels at 700–1100 °C as potential supercapacitor electrodes, and their texture and electrochemical properties were determined. The specific surface area of all C-AGs was in the range of 700–760 m2/g, their electron conductivity increased linearly from 0.4 to 4.46 S/cm with an increase of the pyrolysis temperature. The specific capacitance of electrode material based on C-AGs reached 100 F/g in sulfuric acid and could be realized at a 2 A/g charge-discharge current, which makes it possible to use carbon aerogels as electrode materials.
Highlights
In recent years, new carbon materials have attracted increased attention due to their excellent properties
A standard resorcinol:formaldehyde 1:2 molar ratio was applied in all cases
1.47 mL (0.02 mol) of formaldehyde solution were added, and the mixture was stirred for 10–20 min
Summary
New carbon materials have attracted increased attention due to their excellent properties. One of the promising materials is carbon aerogel (C-AGs), which is a 3D-network of nanoscale particles. Such materials are usually synthesized by the pyrolysis of precursors, such as polymer organic aerogels [1]. The use of C-AGs as an electrode material in electrochemical double-layer capacitors (supercapacitors) has been described in a number of works [9,10,11,12,13,14,15,16]. Silicon carbide aerogels were treated with chlorine gas at 700–1000 ◦ C to remove silicon and to form a highly porous carbon material with a specific surface area as high as 2700 m2 /g. Similar material prepared by high-temperature chlorination of molybdenum carbide provided a ~125 F/g gravimetric capacitance value [15]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
