A modified activated carbon aerogel for high-energy storage in electric double layer capacitors

Effect of poly(3,4-ethylenedioxythiophene) (PEDOT) in carbon-based composite electrodes for electrochemical supercapacitors

“…Carbonaceous materials such as aerogel [3][4] and powder [5] [6] are the most commonly used electrode materials in EDLC devices due to carbon's high surface area, chemical and thermal stability, relatively low cost and low environmental impact. Carbonaceous materials are usually activated [4] [7] to produce a large porous surface area before being used for EDLC electrodes. On the other hand, the activation of carbon results in a lower electrical conductivity, usually 0.1-1.0 Scm -1 , due to its high porosity and high surface area [8] [9].…”

Carbon Xerogel Catalyst for NO Oxidation

“…For this reason, carbon xerogels are used in a wide range of applications, including catalysis [24,25], adsorption [26,27] and energy storage [28][29][30].…”

Designing Nanostructured Carbon Xerogels

“…Therefore, it is very common to activate carbon xerogels, where the porosity is narrower and lower, and they are usually used in applications where besides narrow mesopores a high volume of micropores are needed. It is generally accepted that there are two types of activation methods: physical activation, by means of CO 2 , steam, or a combination of both (Lin & Ritter, 2000) and chemical activation, where the activation agent may be KOH (Fang & Binder, 2006;Macia-Agullo et al, 2007;Zubizarreta et al, 2008c ), H 3 PO 4 (Conceição et al, 2009;Jagtoyen et al, 1993), ZnCl 2 (Olivares-Martín et al, 2006), etc. In all cases, it is essential to optimize a number of variables due to their notable influence on the final porosity.…”

“…Some of these variables are: temperature and time of activation, activating agent and precursor used (i.e., organic or carbon gels as precursor), amount of activating agent, gas flow and heating rate, etc. (Fang & Binder, 2006;Lozano-Castelló, 2002). Chemical activation processes take place in two stages: (i) the precursor is mixed with the activating chemical agent and this can be done in two different ways, by physical mixture, i.e.…”