Facile fabrication of hierarchical porous carbon for a high-performance electrochemical capacitor

Abstract

A facile and rapid pyrolysis method is developed for the synthesis of 3D hierarchical porous carbon, which exhibits a high specific capacitance, good rate capability and good cycling performance.

Biomass-Derived Porous Carbon Materials for Supercapacitor

“…The samples gained extremely high surface area (2,129 m 2 /g), large pore volume (0.97 cm 3 /g), good C s (337 F/g at 0.5 A/g) and reasonable cycle stability. Similar preparation strategies were employed to treat starch by other researchers to investigate the electrochemical properties of the PC (Pang et al, 2016a; Yang et al, 2016; Du et al, 2017). Calcium acetate was used as the hard template and mixed with starch before carbonization, the PC with tunable pore size by adjusting the ratio of starch/calcium acetate was prepared.…”

Nitrogen and sulfur co-doped graphene aerogel for high performance supercapacitors

“…1,2 Electrochemical double layer capacitors (EDLCs), also called supercapacitors, are applicable in many elds due to their fast charge-discharge rates, high power density, long cycle life, and high safety. [3][4][5] In general, the main electrode materials of EDLCs are carbon materials, such as activated carbon, carbon nanotubes, mesoporous carbon, and graphene. [6][7][8] Graphene, a at sheet of carbon with one atom thickness, has many excellent properties such as light weight, high stability, high conductivity, and high specic surface area, 9 and thus has potential to fabricate high-performance supercapacitors.…”

“… 1,2 Electrochemical double layer capacitors (EDLCs), also called supercapacitors, are applicable in many fields due to their fast charge–discharge rates, high power density, long cycle life, and high safety. 3–5 In general, the main electrode materials of EDLCs are carbon materials, such as activated carbon, carbon nanotubes, mesoporous carbon, and graphene. 6–8…”

Pentafluoropyridine functionalized novel heteroatom-doped with hierarchical porous 3D cross-linked graphene for supercapacitor applications

“…2f ), indicate the graphitic structure within NPFG-0.3. 34 The elemental mapping images of the NPFG-0.3 are shown in Fig. 2g , and the elements C, O, N, P, and F were distributed through the whole 3D graphene network.…”

“…The mesopores afford effective ion transport pathways with a minimized resistance and strengthen the supercapacitor's electrical double layer characteristics. 34,35 The structure characterization parameters of N 2 adsorption/desorption analyses in terms of BET specic surface area, BET average pore size, and total pore volume have been summarized in Table 1. To investigate the inuence of heteroatoms on the electrochemical performance of NPFG, a rst-principal calculation using density functional theory (DFT) was performed.…”