Abstract
This paper shows that the performance of resorcinol–formaldehyde-based carbon aerogels in electrical double-layer capacitors (EDLCs) can be significantly enhanced by a simple treatment with CO2 activation. The changes in the specific surface area lead to high capacitance values, which provide a noticeable energy density. The CO2 activated carbon aerogels have a high specific surface area up to 3431m2/g and specific capacitances three times higher than that of the raw carbon aerogels. The activated carbon aerogels obtained the specific capacitance at 152F/g and energy density of 27.5Wh/kg at the current density of 0.3A/g in 1M Et4NBF4–AN electrolyte. Furthermore, an excellent rate capability, low equivalent series resistance (ESR), and a good cycling stability over 8000cycles of the resulting carbon aerogels were also confirmed by electrochemical measurements as galvanostatic charge–discharge, cyclic voltammetry and electrochemical impedance spectroscopy.
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.
