Urrent densities ranging from 1 mA cm-2 to 50 mA cm-2 , the MS and MP curves are practically symmetrical using a compact IR drop. The volumetric capacitance of MS at a low present density of 1 mA cm-2 is 70.four F cc-1 , as well as at a high existing density of 50 mA cm-2 , the MS still offers a volumetric capacitance of 60 F cc-1 owing for the elevated wettability of your pore walls which is attributed towards the N-functional group derived from sucrose [25]. Having said that, mainly because the surface region porosity of Combretastatin A-1 custom synthesis activated carbon plays a crucial part in figuring out the performance of your supercapacitor, CAC exhibits a higher volumetric capacitance of 70.8 F cc-1 at 1 mA cm-2 , although it really is tough to calculate due to the 2.1 V IR drop at a high present density of 50 mA cm-2 . The volumetric capacitance of CAC amounts to six.9 F cc-1 at 50 mA cm-2 and was calculated making use of the discharge profile, thereby excluding the IR drop. After nitrogen-doping and carbon-coating, the particular surface regions of MS and MP reduced. Nonetheless, the level of micropores that did not create capacity also lowered; therefore, there was no important distinction inside the capacitances on the raw components. Figure S8 shows the cycling stability from the MS supercapacitor, which maintained 89.eight of its initial capacitance soon after ten,000 cycles at a existing density of ten mA cm-2 , indicating a superior extended cycling life. Figure S7 further shows a comparison involving compares the electrochemical impedance spectra in the samples in the organic electrolyte. Compared with MS and MP, it exhibits relatively decrease intrinsic ohmic resistances and equivalent series resistances in the high-frequency region in addition to a higher slope in the low-frequency area, demonstrating decrease make contact with
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