Aromatic sulfide, sulfoxide, and sulfone mediated mesoporous carbon monolith for use in supercapacitor

Zhao, Xiaochen; Zhang, Qiang; Chen, Cheng-Meng; Zhang, Bingsen; Reiche, Sylvia; Wang, Aiquin; Zhang, Tao; Schlögl, Robert; Su, Dang Sheng

doi:10.1016/j.nanoen.2012.04.003

Cited by 308 publications

(218 citation statements)

References 63 publications

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“…The latter should be especially important for the C-A sample of negligible porosity. Its high content of sulfoxides and sulfones results in reversible Faradaic reactions leading to the formation of hydroxylated sulfoxides and sulfoxides, respectively [24].…”

Section: 3surface Chemistrymentioning

confidence: 99%

Effect of visible light and electrode wetting on the capacitive performance of S- and N-doped nanoporous carbons: Importance of surface chemistry

Seredych

Rodríguez‐Castellón

Biggs

et al. 2014

Carbon

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Importance of surface chemistry. Carbon, 78, Additional Information:• This paper was accepted for publication in the journal Car- AbstractNanoporous carbons with graphitic domains were synthesized from a polymer containing sulfur and nitrogen. The materials were characterized using adsorption of nitrogen, potentiometric titration TA/MS, XPS, TEM and XRD. Then they were tested as supercapacitors in threeelectrode cell and under visible light irradiation after extensive wetting either in water or a sulfuric acid electrolyte. The capacitance up to 450 F/g was measured in spite of a relatively low surface (<850 m 2 /g). The surface chemistry, and especially sulfur and nitrogen containing functional groups, were found of paramount importance for the capacitive behavior and for the effective pore space utilization by the electrolyte ions. Photocurrent measured in light also affects the capacitance. Its generation is linked to the excitation of sulfonic/sulfoxide chromophores-like moieties decorating the surface of the polymer-derived carbons.3

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Section: 3surface Chemistrymentioning

confidence: 99%

Effect of visible light and electrode wetting on the capacitive performance of S- and N-doped nanoporous carbons: Importance of surface chemistry

Seredych

Rodríguez‐Castellón

Biggs

et al. 2014

Carbon

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“…Like other carbons, the carbon monoliths can be doped with heteroatoms (oxygen, nitrogen, phosphorus, sulfur,…), the doping giving rise to an increase of the specific capacitance or to a broadening of the working voltage window [33][34][35][36][37][38]. The high electrical conductivity makes carbon monoliths suitable substrates for depositing other active electrode materials such as polymers [39] or oxides [40,41].…”

Section: Introductionmentioning

confidence: 99%

The contribution of sulfate ions and protons to the specific capacitance of microporous carbon monoliths

Barranco

García-Gómez

Kunowsky

et al. 2014

Journal of Power Sources

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The monoliths studied in this work show large specific surface areas (up to 1600 m 2 g -1 ), high densities (up to 1.17 g cm -3) and high electrical conductivities (up to 9.5 S cm -1 ). They are microporous carbons with pore sizes up to 1.3 nm but most of them below 0.75 nm. They also show oxygen functionalities. The electrochemical behavior of the monoliths is studied in three-electrode cells with aqueous H 2 SO 4 solution as electrolyte. This work deals with the contribution of the sulfate ions and protons to the specific capacitance of carbon monoliths having different surface areas and different contents of oxygen groups. Protons contribute with a pseudocapacitance (up to 152 F g ); both capacitances increase as the surface area increases. The preference of protons to be electroadsorbed at the double layer and the broader voltage window of these ions account for their higher contribution (70 %) to the double layer capacitance.

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“…6b). This difference could be induced by pseudocapacitive charges stored in heteroatoms on the surface of the NCNSs [22][23][24]. In the 6 M NaOH aqueous electrolyte, hydrated Na + ions could be charge carriers, in contrast to the 1 M Na 2 SO 4 aqueous electrolyte, of which the charge carriers were hydrated SO 4 -.…”

Section: Conflict Of Interestmentioning

confidence: 99%

Waste coffee grounds-derived nanoporous carbon nanosheets for supercapacitors

Park¹,

Yun²,

Cho³

et al. 2016

Carbon letters

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The development of nanostructured functional materials derived from biomass and/or waste is of growing importance for creating sustainable energy-storage systems. In this study, nanoporous carbonaceous materials containing numerous heteroatoms were fabricated from waste coffee grounds using a top-down process via simple heating with KOH. The nanoporous carbon nanosheets exhibited notable material properties such as high specific surface area (1960.1 m 2 g -1 ), numerous redox-active heteroatoms (16.1 at% oxygen, 2.7 at% nitrogen, and 1.6 at% sulfur), and high aspect ratios (>100). These unique properties led to good electrochemical performance as supercapacitor electrodes. A specific capacitance of ~438.5 F g -1 was achieved at a scan rate of 2 mV s -1 , and a capacitance of 176 F g -1 was maintained at a fast scan rate of 100 mV s -1 . Furthermore, cyclic stability was achieved for over 2000 cycles.

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Aromatic sulfide, sulfoxide, and sulfone mediated mesoporous carbon monolith for use in supercapacitor

Cited by 308 publications

References 63 publications

Effect of visible light and electrode wetting on the capacitive performance of S- and N-doped nanoporous carbons: Importance of surface chemistry

Effect of visible light and electrode wetting on the capacitive performance of S- and N-doped nanoporous carbons: Importance of surface chemistry

The contribution of sulfate ions and protons to the specific capacitance of microporous carbon monoliths

Waste coffee grounds-derived nanoporous carbon nanosheets for supercapacitors

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