Nitrogen and sulfur co-doped ordered mesoporous carbon with enhanced electrochemical capacitance performance

Abstract

Doping ordered mesoporous carbon with electron-donating nitrogen and sulfur heteroatoms is a promising strategy to enhance its electrochemical performance. Here we demonstrate the successful fabrication of nitrogen and sulfur co-doped ordered mesoporous carbon (NSOMC) materials with high specific surface areas (978-1021 m 2 g À1 ), large pore volumes (1.10-1.20 cm 3 g À1 ), highly-ordered pore structures and controlled dopant contents (10.0-4.8 at.% for nitrogen and 1.7-2.6 at.% for sulfur) using the oligomer of pyrrole as the precursor and sulphuric acid as the catalyst and sulfur source. NSOMC materials exhibit enhanced electrochemical double-layer capacitance (EDLC) performances due to their improved surface activity and conductivity compared with pure carbon CMK-3. The fabrication of nitrogen and sulfur co-doped ordered mesoporous carbon with enhanced electrochemical capacitance performance provides a viable route to promote its applications in electronic devices.

Nitrogen-doped carbon nanomaterials: To the mechanism of growth, electrical conductivity and application in catalysis

“…The obtained dependence was interpreted as an increase in the number of defects in the carbon structure with increasing the nitrogen content. The optimal concentration of nitrogen in the ordered N-,S-containing mesoporous carbon upon its variation from 0 to 8.2 at.% with respect to the maximum conductivity was found in [64]. Resistance decreased in a series: 0%N-1.11 , 8.2%N-0.95 and 4.8%N-0.67 .…”

Sponge-like carbon thin films: The dealloying concept applied to copper/carbon nanocomposite

“…The increasing interest toward np-C has already led to several applications including gas storage and purification [61,62], and more recently as electrodes in supercapacitors [30,[32][33][34]36,39,42,63,64]. Nevertheless, the methods developed so far to synthesize np-C require high temperature treatment (typically between 400 and 1000°C) which is not compatible with flexible microelectronic standards since such materials cannot be synthesized on temperature sensitive substrates such as polymers [27,29,37,39,44,46,62,65,66].…”

“…Nanoporous carbon (np-C) materials have recently received a particular attention from both industrial and scientific communities, mainly due to their high chemical and thermal stability combined to their highly tunable properties [31,32,35,36,60]. The increasing interest toward np-C has already led to several applications including gas storage and purification [61,62], and more recently as electrodes in supercapacitors [30,[32][33][34]36,39,42,63,64].…”

“…The high specific surface area of this kind of material confers them exceptional properties such as super-hydrophobicity [1,2], enhanced catalysis activity [3][4][5][6], and very selective filtering ability [7,8]. Various materials were used to synthesize nanoporous structures including metals (e.g., Au [6,[9][10][11][12][13][14], Pt [15][16][17][18], and Ag [19,20]), oxides (e.g., TiO 2 [21][22][23] and SiO 2 [24,25]) and carbon [26][27][28][29][30][31][32][33][34][35][36]. In general, the material forming the skeleton of the nanoporous structure is selected according to the aimed application.…”

Dual hetero atom containing bio-carbon: Multifunctional electrode material for High Performance Sodium-ion Batteries and Oxygen Reduction Reaction

“…[15] Generally, incorporation of hetero atoms into carbon matrix is carried out by chemical vapor deposition, thermal annealing with NH3, nitrogen plasma treatment and the arc-discharge method that pose numerous challenges. [16][17][18][19][20] Further, usage of toxic reagents leads to severe environmental issues.…”