2015
DOI: 10.1016/j.jpowsour.2015.09.030
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Isolating the effect of pore size distribution on electrochemical double-layer capacitance using activated fluid coke

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Cited by 19 publications
(6 citation statements)
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“…However, the influence of pore size on C remains a subject of debate due to several contradictory experimental results. , One potential source of this experimental inconsistency is the common practice of reporting C normalized to the measured specific surface area ( S ), or the so-called areal capacitance, which is highly sensitive to the characterization method used . Interestingly, when C is normalized to the more reliably measured electrode mass, or the so-called specific (or gravimetric) capacitance, a clear dependence on pore size can be absent . Another issue brought forth by a series of theoretical studies, which simulated confined ions within nanoslits, is that the optimal areal C tends to vary with both pore size and applied potential. These previous works have implied that the aforementioned experimental discrepancies may be attributed to different pore size dispersity throughout the electrode structure, which might also indirectly influence the capacitance through pore-width-dependent dielectric screening .…”
Section: Introductionmentioning
confidence: 99%
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“…However, the influence of pore size on C remains a subject of debate due to several contradictory experimental results. , One potential source of this experimental inconsistency is the common practice of reporting C normalized to the measured specific surface area ( S ), or the so-called areal capacitance, which is highly sensitive to the characterization method used . Interestingly, when C is normalized to the more reliably measured electrode mass, or the so-called specific (or gravimetric) capacitance, a clear dependence on pore size can be absent . Another issue brought forth by a series of theoretical studies, which simulated confined ions within nanoslits, is that the optimal areal C tends to vary with both pore size and applied potential. These previous works have implied that the aforementioned experimental discrepancies may be attributed to different pore size dispersity throughout the electrode structure, which might also indirectly influence the capacitance through pore-width-dependent dielectric screening .…”
Section: Introductionmentioning
confidence: 99%
“…18 Interestingly, when C is normalized to the more reliably measured electrode mass, or the so-called specific (or gravimetric) capacitance, a clear dependence on pore size can be absent. 20 Another issue brought forth by a series of theoretical studies, which simulated confined ions within nanoslits, is that the optimal areal C tends to vary with both pore size and applied potential. 21−25 These previous works have implied that the aforementioned experimental discrepancies may be attributed to different pore size dispersity throughout the electrode structure, 21−24 which might also indirectly influence the capacitance through pore-width-dependent dielectric screening.…”
Section: ■ Introductionmentioning
confidence: 99%
“…In order to investigate the porosity models presented above, four porous carbon samples were prepared from oil sands petroleum coke, prepared either from continuous or batch coking processes. The samples were chemically activated using potassium hydroxide, with a mass ratio of either 2.5:1 or 3.5:1 KOH:coke, as outlined in Zuliani et al 43,44 2.1.2. Porous Carbon Sample Characteristics.…”
Section: Methodsmentioning
confidence: 99%
“…The samples are referred to as activated delayed coke (ADC-Y:Z), where Y:Z represents the mass ratio of KOH:Coke used to prepare the sample. The activation procedure was similar to that presented in (46,47), with KOH to coke ratios for the samples being 2.5:1 and 3.5:1. The microporous sample was prepared with a KOH:Coke ratio of 2.5:1, and the mesoporous sample was prepared with a KOH:Coke ratio of 3.5:1.…”
Section: Methodsmentioning
confidence: 99%
“…This leads to a higher SSA-normalized capacitance due to a thinner EDL (22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39). However, the micropore enhanced capacitance is not observed in all microporous samples, leading to an ongoing debate in the EDLC research community (7,16,(37)(38)(39)(40)(41)(42)(43)(44)(45)(46).…”
Section: Introductionmentioning
confidence: 99%