Hierarchically porous carbon nanosheets derived from Moringa oleifera stems as electrode material for high-performance electric double-layer capacitors

“Water-in-salt” electrolyte enhanced high voltage aqueous supercapacitor with carbon electrodes derived from biomass waste-ground grain hulls

“…Notably, the energy and power densities of SSCs based on BSAC-A-800 using 17 m NaClO 4 are comparable to or even much better than the previously reported biomass derived carbon-based SSCs. 2,4,13,18,41,42,44 In addition, three SSCs in series can easily light 16 LEDs which form the pattern of "B" (see inset of Fig. 8e).…”

“…9 Electrode material, especially porous biomass carbon is a promising material for various applications due to ultralow cost, high abundance, easily availability and environmentfriendliness. 12 Various biomass carbon materials with ingenious hierarchical porous structure have been widely synthesized, such as: loblolly pine, 13 olive pit, 14 poplar wood, 15 corn, 16 pomelo mesocarp, 17 Moringa oleifera stems, 18 waste shrimp shells, 19 waste tea, 20 lightweight cork, 21 waste oily sludge, 22 pollen, 23 pea skin, 24 onion 25 and ginkgo leaf. 26 However, in Datong (a prefecture-level city in Shanxi Province), local farmers plant cereals and millets extensively every year and these cereals and millets will be mechanically removed from the outer shell within a few weeks of winter every year.…”

Sustainable Biomass Activated Carbons as Electrodes for Battery and Supercapacitors—A Mini-Review

“…In another study, Moringa oleifera leaves were used as raw biomass for CEs preparation [86]. The fabricated CEs showed very high electrochemical performances such as capacitance retention higher than 90% when the current density is increased from 1.0 to 50 A g −1 and efficient cycling stability over 20 000 cycles.…”

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

“…The energy density (E) (W h kg À1 ) and power density (P) (W kg À1 ) of the cell in the two-electrode conguration were calculated by using the equations of E ¼ 0.5C sp (DV) 2 /3.6 and P ¼ E Â 3600/Dt, respectively, where C sp (F g À1 ) represents the specic capacitance of the supercapacitor calculated from the GCD curves in two-electrode conguration, and Dt (s) and DV (V) refers to the discharge time and voltage change within the discharge time. 25…”