Influence of nitric acid acitivation on structure and capacitive performances of ordered mesoporous carbon

Effects of Nitric Acid Activation on Textural, Surface, and Supercapacitive Properties of Ultra-Small Carbon Nanospheres

“…A broad peak at around 3432 cm −1 is observed in all the four samples, which is mainly caused by the O-H stretching vibration of the adsorbed water. [8] Another broad band is observed at 1239 cm −1 , which should be caused by the stretching vibration of the C-O-C bonds. [8] In addition, the C=O stretching vibrations related to carbonyl and/or carboxyl groups can be found at around 1733 cm −1 .…”

“…[8] Another broad band is observed at 1239 cm −1 , which should be caused by the stretching vibration of the C-O-C bonds. [8] In addition, the C=O stretching vibrations related to carbonyl and/or carboxyl groups can be found at around 1733 cm −1 . [8] The spectra of the nitric acid activated samples are similar to that of the unactivated CNS, except with significantly more intense bands at 1733 cm −1 and 1239 cm −1 .…”

“…A large variety of carbon materials obtained from different precursors/strategies have thus far been investigated for nitric acid activation, with significant improvements in specific capacitance yielded. These include char-and biowaste-derived carbon materials, [5][6][7] ordered mesoporous/macroporous carbons by both hard and soft templating, [8][9][10][11][12][13][14][15] graphene, [16] calcium carbide derived carbon, [17] and carbon spheres. [18] Our group has recently developed a catalytic emulsion polymerization technique for the convenient, tailored synthesis of ultra-small carbon nanospheres (CNSs) with uniform, tunable ultra-small sizes within 10-50 nm.…”

Hydrothermal functionalization of ordered mesoporous carbons: The effect of boron on supercapacitor performance

“…The capacity can also be enhanced by reversible redox reactions developed at the electrode surface [6][7][8]. This so called pseudocapacitance is introduced by enriching the carbon surface with electroactive species containing nitrogen [9], oxygen [10], boron [11], phosphorus [12], or sulphur [13]. During the last decade, carbons doped with oxygen and nitrogen have been extensively studied as EDCLs electrodes [14][15][16][17][18].…”

Synthesis and characterization of organic–inorganic hybrid microspheres

“…Due to the fact that the TEVS is covalently bonded to the polymeric matrix and triethoxysilane part is removed in the second step, this type of synthesis can be classified as the hard template method. This method is successfully used for preparation of ordered mesoporous carbons (Jaroniec et al 2009, Peng and Fu 2015, Zhu et al 2015, Sobiesiak 2012. We used the hard template technique in an innovative way for the preparation of porous polymer microspheres.…”