Sustainable production of self-activated bio-derived carbons through solar pyrolysis for their use in supercapacitors

Incorporation of heteroatoms into reticulated vitreous carbon foams derived from sucrose to improve its energy storage performance

“…Since the capacitance of the device (C stor ) determined by EIS do not decrease with the cycling, it can be expected that capacitance fading observed by GCD test is mainly related to the gradual increment of the ESR. The increase of ESR with cycling has been reported by several authors after long term tests 42,46,47 . This behavior has been related to several factors such electrode instability (active material detachment) or electrolyte ions accumulation in the pores of the activated carbon electrodes.…”

“…The increase of ESR with cycling has been reported by several authors after long term tests. 42,46,47 This behavior has been related to several factors such electrode instability (active material detachment) or electrolyte ions accumulation in the pores of the activated carbon electrodes. In our case, the dramatic increment in the ESR (up to six times of the initial value) measured using EIS measurements might be related to electrolyte ions accumulation inside the pores of the RVC foams, however, the accumulation of bubbles, from water decomposition, can be also involved.…”

Self-Activated SiO2/C Nanocomposite from Silica-Rich Marine Mucilage for Supercapacitor Applications

“…Heteroatoms promote EDL capacitance by improving electrical conductivity and surface wettability of the material while contributing to the pseudocapacitance through surface redox reactions. 38 SEM images of marine mucilage displayed amorphous aggregates of algal organic matter (Fig. 3A) and flat-faced cubic crystals embedded within (Fig.…”

Design and Use of a Novel In Situ Simultaneous Thermal Analysis Cell for an Accurate “Real Time” Monitoring of the Heat and Weight Changes Occurring in Electrochemical Capacitors

“…Simultaneous thermal analysis is a widespread technique, which is routinely used for the investigation of materials and electrolytes of interest for energy storage devices, including EDLCs. [ 31–34 ] To date, nevertheless, the realization of an electrochemical in situ cell which can be coupled with this kind of equipment has not been considered.…”

“…Simultaneous thermal analysis is a widespread technique, which is routinely used for the investigation of materials and electrolytes of interest for energy storage devices, including EDLCs. [31][32][33][34] To date, nevertheless, the realization of an electrochemical in situ cell which can be coupled with this kind of equipment has not been considered. To successfully implement an electrochemical in situ cell into a STA a certain number of requirements need to be satisfied: 1) The heat must be transferred fast and evenly between the cell and the probe; 2) The in situ cell must be lightweight, to be usable in conventional TGA/DTA devices; 3) The parasitic heat transfer, contact resistance, and total mass of cables tension of the wires must be minimized; and 4) The cell needs to endure heat as well as an aggressive chemical environment.…”