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

Fang, Baizeng; Binder, Leo

doi:10.1016/j.jpowsour.2006.09.014

Cited by 208 publications

(106 citation statements)

References 19 publications

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“…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].…”

Section: Introductionmentioning

confidence: 99%

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

Lei

Wilson

Lekakou

2011

Journal of Power Sources

130

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Section: Introductionmentioning

confidence: 99%

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

Lei

Wilson

Lekakou

2011

Journal of Power Sources

130

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“…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].…”

Section: Open Accessmentioning

confidence: 99%

Carbon Xerogel Catalyst for NO Oxidation

2012

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Carbon xerogels were prepared by the polycondensation of resorcinol and formaldehyde using three different solution pH values and the gels were carbonized at three different temperatures. Results show that it is possible to tailor the pore texture of carbon xerogels by adjusting the pH of the initial solution and the carbonization temperature. Materials with different textural properties were obtained and used as catalysts for NO oxidation at room temperature. The NO conversions obtained with carbon xerogels were quite high, showing that carbon xerogels are efficient catalysts for NO oxidation. A maximum of 98% conversion for NO was obtained at initial concentration of NO of 1000 ppm and 10% of O 2 . The highest NO conversions were obtained with the samples presenting the highest surface areas. The temperature of reaction has a strong influence on NO oxidation: the conversion of NO decreases with the increase of reaction temperature.

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“…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.…”

Section: Thermal Treatments Of Organic Gelsmentioning

confidence: 99%

“…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.…”

Section: Thermal Treatments Of Organic Gelsmentioning

confidence: 99%