Structural characterization and electric double layer capacitance of template carbons

Kodama, Masaya; Yamashita, Juli; Soneda, Yasushi; Hatori, Hiroaki; Nishimura, Satoshi; Kamegawa, Katsumi

doi:10.1016/j.mseb.2003.10.097

Cited by 72 publications

(39 citation statements)

References 4 publications

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“…On the other hand, 200-220 F g −1 seems to be the upper limit for this type of electrolyte [24][25][26][27][28][29][30][31][32][33]. This limit is in agreement with the expected value based on 1500-1600 m 2 g −1 as a realistic upper-bound for the specific surface area of templated mesoporous carbons (see Section 3.1).…”

Section: Specific Capacitance At Low Current Densitysupporting

confidence: 86%

“…For example, Kodama et al [28] and Frackowiak et al [45] reported higher capacitances for carbons containing residual nitrogen from the precursor. Increased performances have also been reported for sucrose- based TMCs [25][26][27], obviously due to the higher oxygen content of the precursor.…”

Section: Specific Capacitance At Low Current Densitymentioning

confidence: 99%

“…Recently, some authors have emphasized the ability of new advanced mesoporous carbons to store large amounts of energy with faster charge propagation than that achieved by microporous carbons [23][24][25][26][27][28][29][30][31][32]. It has been reported that the former suit the size of the electrolyte ions and enhance the EDLC performance at high rate.…”

Section: Evolution Of Electrical Capacitance With Current Densitymentioning

confidence: 99%

“…Several studies have suggested promising properties of templated mesoporous carbons (TMC) when used in EDLC systems [23][24][25][26][27][28][29][30][31][32][33], but at the present stage the absence of a systematic analysis does not allow a reliable correlation between the structural characteristics of these materials and their capacitive behaviour. In fact, this approach is of prime importance for the design of carbon electrodes and electrochemical capacitors with improved performances.…”

Section: Introductionmentioning

confidence: 99%

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Performance of templated mesoporous carbons in supercapacitors

Sevilla

Álvarez

Centeno

et al. 2007

Electrochimica Acta

117

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By analogy with other types of carbons, templated mesoporous carbons (TMCs) can be used as supercapacitors. Their contribution arises essentially from the double layer capacity formed on their surface, which corresponds to 0.14 F m −2 in aqueous electrolytes such as H 2 SO 4 and KOH and 0.06 F m −2 for the aprotic medium (C 2 H 5 ) 4 NBF 4 in CH 3 CN. In the case of a series of 27 TMCs, it appears that the effective surface area determined by independent techniques can be as high as 1500-1600 m 2 g −1 , and therefore exceeds the value obtained for many activated carbons (typically 900-1300 m 2 g −1 ). On the other hand, the relatively low amount of surface oxygen in the present TMCs, as opposed to activated carbons, reduces the contribution of pseudo-capacitance effects and limits the gravimetric capacitance to 200-220 F g −1 for aqueous electrolytes. In the case of non-aqueous electrolyte, it rarely exceeds 100 F g −1 .It is also shown that the average mesopore diameter of these TMCs does not improve significantly the ionic mobility compared with typical activated carbons of pore-widths above 1.0-1.3 nm.This study suggests that activated carbons remain the more promising candidates for supercapacitors with high performances.

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Section: Specific Capacitance At Low Current Densitysupporting

confidence: 86%

Section: Specific Capacitance At Low Current Densitymentioning

confidence: 99%

Section: Evolution Of Electrical Capacitance With Current Densitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Performance of templated mesoporous carbons in supercapacitors

Sevilla

Álvarez

Centeno

et al. 2007

Electrochimica Acta

117

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“…Accordingly explorations into different electrode materials are proceeding mainly aiming at the pseudo-capacitance. In this category, doped carbons are one of the promising materials and of them nitrogen-doped carbons have received much attention [2][3][4][5][6][7][8][9][10]. The gain in capacitance by nitrogen doping is frequently attributed to redox reactions of the functional groups containing nitrogen (e.g.…”

Section: Introductionmentioning

confidence: 99%

High capacitance B/C/N composites for capacitor electrodes synthesized by a simple method

Konno

Ito

Ushiro

et al. 2010

Journal of Power Sources

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The B/C/N composites were synthesized by a very simple method, that is, carbonization at HTT = 800-1200˚C of the precursor prepared by drying a solution mixture of polyacrylamide and boric acid, followed by boiling in water to remove borate by-products. The amount of insoluble B species in the composite increased linearly from 4.8 to 18.6 mass% with raising HTT. The XRD and FT-IR , larger for lower HTT, in the acid and neutral electrolytes, respectively.

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Carbon‐Based Nanomaterials for Electrochemical Energy Storage

Frąckowiak

Béguin²

2010

Nanotechnology for the Energy Challenge

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Structural characterization and electric double layer capacitance of template carbons

Cited by 72 publications

References 4 publications

Performance of templated mesoporous carbons in supercapacitors

Performance of templated mesoporous carbons in supercapacitors

High capacitance B/C/N composites for capacitor electrodes synthesized by a simple method

Carbon‐Based Nanomaterials for Electrochemical Energy Storage

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