Polyaniline/ZnS quantum dots nanocomposite as supercapacitor electrode

NiFe2O4 quantum dots anchored on flower-like Ni-MOF with enhanced electrochemical performance for supercapacitors

“…By calculation using eqn (3) and (4), respectively, the NiFe 2 O 4 QDs@Ni-MOF-10//AC device achieved a maximum energy density of 32.5 W h kg −1 at a power density of 849.2 W kg −1 and even when the power density was increased to 7996 W kg −1 , the energy density still remained at 18 W h kg −1 , indicating outstanding performance under high power density conditions. The result was superior to those of previously reported QD-based composites, such as ZnO QDs/carbon/CNTs (23.6 W h kg −1 at 847 W kg −1 ), 71 PANI/ZnS QDs (178.7 W h kg −1 at 300 W kg −1 ), 72 NiFe 2 O 4 QDs/G (24.4 W h kg −1 at 499.3 W kg −1 ), 73 MoS 2 QDs/PANI (29.4 W h kg −1 at 398 W kg −1 ), 74 QD/rGO-0.75 (27.8 W h kg −1 at 730 W kg −1 ), 75 and ZnO QD/NPC/CNF (33.8 W h kg −1 at 800 W kg −1 ). 76 A detailed comparison is listed in Table 1.…”

Review and Outlook of Zinc Sulfide Nanostructures for Supercapacitors

“…The Zn 0.7 Fe 0.3 S nanocomposite demonstrated a remarkable specific capacitance and achieved a specific power and energy in an ASC device configuration. 188 Salah et al 189 explored the combination of ZnS quantum dots (QDs) and polyaniline (PANI) as electrodes for supercapacitors. The electrochemical characteristics of PANI/ZnS QDs nanocomposites were evaluated using CV, GCD, and EIS.…”

“…The incorporation of ZnS QDs improved the supercapacitor's electrochemical performance. 189 Jiang et al 190 synthesized ZnS-NiS 2 composite materials by a two-step synthesis route which showed improved energy storage efficiency in an ASC device. The sample with ideal ZnS-NiS 2 -1:7 ratio displays a maximum specific capacitance, which is 26.1% greater than pure NiS 2 .…”

“…Salah et al explored the combination of ZnS quantum dots (QDs) and polyaniline (PANI) as electrodes for supercapacitors. The electrochemical characteristics of PANI/ZnS QDs nanocomposites were evaluated using CV, GCD, and EIS.…”

Mesoporous and microporous carbons from one-pot hydrothermal products for supercapacitor electrodes: effects of porous structures and surface functionality

“…Supercapacitors (SCs) recognized as a promising sustainable energy storage device have attracted widespread attention, owing to their fast charge-discharge, high power, excellent long-term cycling life, etc. [1][2][3][4][5] Although the theoretical and experimental specific capacitances at relatively low sweep rates of activated carbons (ACs) are lower than those of metal oxides [6][7][8] and conductive polymers, 9,10 the electrochemical performances of the ACs at high charge-discharge rates are competitive. 11 Moreover, compared with metal oxides and conductive polymers, the superior conductivity, outstanding electrochemical stability, eco-friendliness and low cost also make ACs the most widely-used electrode materials of the commercial-level SCs.…”