Unconventional mesopore carbon nanomesh prepared through explosion–assisted activation approach: A robust electrode material for ultrafast organic electrolyte supercapacitors

Design of high‐performance flexible symmetric supercapacitors energized by redox‐mediated hydrogels including metal‐doped acidic polyelectrolyte

“…The ESR resistances of PVPA/Ni1, PVPA/Ni3, PVPA/Ni5, and PVPA/Ni10 device electrodes were obtained as 0.31, 0.59, 1.31, and 2.40 Ω, respectively. The Warburg resistance (W) of the system indicates the ion diffusion through the pores on the electrode surface in the low frequency region . The W of all devices demonstrates that the AC‐PVPA/Ni system generates high CD performance by allowing maximum ion diffusion at the electrode level.…”

“…The Warburg resistance (W) of the system indicates the ion diffusion through the pores on the electrode surface in the low frequency region. 29,30,38 The W of all devices demonstrates that the AC-PVPA/Ni system generates high CD performance by allowing maximum ion diffusion at the electrode level. The charge transfer resistance of the system (Rct) is calculated by the diameter of the semicircle obtained in the higher F I G U R E 2 A, Fourier-transform infrared (FTIR) spectra of the hydrogels; B, thermogravimetry analysis (TGA) measurements of the Ni incorporated PVPA; C, differential scanning calorimetry (DSC) curves of the hydrogels; D, X-ray diffraction (XRD) spectra of poly(vinylphosphonic acid) (PVPA)/Ni5 [Colour figure can be viewed at wileyonlinelibrary.com] frequency domain.…”

Construction of symmetric supercapacitors using anhydrous electrolytes containing heterocyclic oligomeric structures

“…The resistances of the supercapacitors bearing BG(Atri) 2 , BG(Atri) 2 /0.1IL, BG(Atri) 2 /H 3 PO 4 /0.1IL, BG(Imi) 2, BG(Imi) 2 /0.1IL, and BG(Imi) 2 /H 3 PO 4 /0.1IL were found to be 4.31, 2.25, 1.21, 2.65, 1.81, and 0.95 Ω, respectively. The ion diffusions throughout the pores in the surface of the electrodes are represented by the Warburg resistance of the system at the low‐frequency area . The Warburg impedance results revealed that the activated carbon and BG(Atri) 2 /H 3 PO 4 /0.1IL and BG(Imi) 2 /H 3 PO 4 /0.1IL systems provide enhanced ion diffusions on the electrode surfaces, improving the charge‐discharge performances of the systems.…”

“…The ion diffusions throughout the pores in the surface of the electrodes are represented by the Warburg resistance of the system at the low-frequency area. 28,29,35 The Warburg impedance results revealed that the activated carbon and BG(Atri) 2 The performances of the supercapacitors consisting of different electrolytes were compared by using the GCD measurements. The GCD curves of different supercapacitors including various anhydrous electrolytes are shown in Figures 3 and 4.…”

Facile synthesis of high-surface-area nanoporous carbon from biomass resources and its application in supercapacitors

“…[16][17][18] Moreover, the hydrophilicity of carbon materials is another important factor that affects the electrochemical performance because a poor contact between electrode and electrolyte in the aqueous medium would lead to the reduced effective SSA. 19 In recent years, many strategies have been reported to obtain nanoporous carbon (NPC) with high SSAs, including carbonization of high SSAs metal-organic frameworks (MOFs), 20,21 physical chemical activation, 10,[22][23][24][25][26] and nanocasting strategy with hard templates 27 (for example, nanoporous silica). Although NPC of high SSAs was obtained by above these methods, their processes of production were very complicated and costly.…”