Carbons with narrow pore size distribution prepared by simultaneous carbonization and self-activation of tobacco stems and their application to supercapacitors

Mesoporous carbon microspheres with high capacitive performances for supercapacitors

“…The result indicates that there is a certain amount of oxygen functional groups on these CPMs-drived carbon materials, which are likely to be 8 -COOH and -OH groups derived from precursors. It is widely considered that the well-defined oxygen functionalities not only enhance the surface wettability, but also afford high pseudo-capacitance for the carbon materials [34,35].…”

Carbon‐based adsorbents for post‐combustion capture: a review

“…Recently, this problem has been circumvented by improving dispersion of activated agent(s). Thus effective activation can be achieved by smaller amounts of corrosive hydroxides . Following this strategy, Ludwinowicz and co‐workers modified the one‐pot Stöber synthesis of phenolic resin by involving potassium oxalate in the process, during the subsequent carbonization, the potassium salt in the phenolic resin played a key role in activation, and enhanced CO 2 adsorption was observed, which was attributed to the increasing of textural properties (almost five‐time higher specific surface area and total pore volume, and almost four‐time higher micropore volume as compared to carbons prepared without the salt) .…”

“…Thus effective activation can be achieved by smaller amounts of corrosive hydroxides. 190 Following this strategy, Ludwinowicz and co-workers modified the one-pot Stöber synthesis of phenolic resin by involving potassium oxalate in the process, during the subsequent carbonization, the potassium salt in the phenolic resin played a key role in activation, and enhanced CO 2 adsorption was observed, which was attributed to the increasing of textural properties (almost five-time higher specific surface area and total pore volume, and almost four-time higher micropore volume as compared to carbons prepared without the salt). 109 Our group employed low-cost ion exchange resin as a carbon precursor, after ion exchange with either KOH or KNO 3 solution, highly dispersed potassium species can be introduced, which served as a highly efficient activation agent, resulting in improved CO 2 uptakes of the prepared carbons.…”

Eco-friendly synthesis of hierarchical ginkgo-derived carbon nanoparticles/NiAl-layered double hydroxide hybrid electrodes toward high-performance supercapacitors

“…[16][17][18][19][20] Recently, Activated carbons have been utilized in a wide range of applications such as air purification, chemicals removal, solvents recovery, molecular serving, and treatment of products in chemical industries for their unique properties of low cost, availability, high surface area, as well as other characteristics. 21,22 Generally, the activated carbons are prepared from coal and other dense plant materials such as wood and nut shells. 23 It is worthy to mention that biomass is considered as one of the natural and renewable sources for eco-friendly preparation of activated carbons.…”

“…12,13,17 Hybrid nanomaterials used for high performance electrodes by combining carbon nanomaterials with EDLC performance and LDH nanomaterials with pseudo capacitance can be an effective way to greatly improve the existing problems for both carbon materials and LDHs. 21,30 Here, a simple but effective method has been presented for preparing carbon nanoparticles (CP) from biomass waste of fallen ginkgo leaves through hydrothermal and chemical activation treatments. The obtained CP materials with average diameters of 50-200 nm show high specific surface area of 761 m 2 g -1 without apparent aggregation or restacking.…”