Effect of activation time on the properties of activated carbons prepared by microwave-assisted activation for electric double layer capacitors

Co3O4/nitrogen-doped graphene/carbon nanotubes: An innovative ternary composite with enhanced electrochemical performance

“…R s is the internal resistance, which includes the active material/current collector interface contact resistance, the ionic resistance of the electrolyte and the intrinsic resistance of the active materials. R s in the Nyquist plot equals to the value of the intercept at the real axis [37]. R ct is charge-transfer resistance, which results from preventing the diffusion of ions between the electrode materials and electrolyte.…”

Mesoporous activated carbons with enhanced porosity by optimal hydrothermal pre-treatment of biomass for supercapacitor applications

“…C 1 , C 2 & C 3 were obtained by the process C at the concentration of 0.16, 0.33 and 0.5 g/mL and the comparison from literature[30,31,[51][52][53][54][55][56] …”

A simple Mg(OH)2-assisted template carbonization method to N-doped nanoporous carbon material from phenidone and the capacitive improvement with the addition of azobisformamide

“…9b. The steeper slope of the plot for the carbon-1:1:1 sample affirms its superior capacitive behavior, and smaller semicircle of the carbon-1:1:1 sample indicates lower charge-transfer resistance between electrode material and electrolyte [38]. Additionally, after cycling 5000 times, the semicircular arcs of both samples are much larger than those of before cycling, corresponding to the enhancement of the charge-transfer resistance in the electrode reaction [39].…”