Electrode and electrolyte materials for electrochemical capacitors

Electrochemical energy storage of silver and silver oxide thin films in an aqueous NaCl electrolyte

“…Studies from Patil et al and Kalambate et al [11][12], show that composite silver thin films have been used for supercapacitor applications due to their reasonable surface area and good conductivity. Mojtaba et al [13] conducted a preliminary investigation on the morphology and wettability of silver oxide thin film electrodes and found that silver oxide has porous morphology and reasonable wettability. The performance of supercapacitor is based on reasonable surface area, porosity and wettability, which are in agreement with findings from Patil et al, Kalambate et al and Mojtaba et al [11][12][13].…”

“…Mojtaba et al [13] conducted a preliminary investigation on the morphology and wettability of silver oxide thin film electrodes and found that silver oxide has porous morphology and reasonable wettability. The performance of supercapacitor is based on reasonable surface area, porosity and wettability, which are in agreement with findings from Patil et al, Kalambate et al and Mojtaba et al [11][12][13]. This makes silver and silver oxide thin films a good candidate for supercapacitor application.…”

“…Moreover, while sputtering power increases, the (111) peak intensity becomes stronger as shown in Figure 1(a). This implies an increase in crystallinity and grain size, with (111) plane having the lowest surface energy [13,15,18]. The grain size of the silver film is an important indicator of the crystallization quality, which was calculated using the Scherrer formula.…”

Effect of physical activation/surface functional groups on wettability and electrochemical performance of carbon/activated carbon aerogels based electrode materials for electrochemical capacitors

“…Functional groups also change the surface chemistry which increases the wettability of electrodeelectrolyte interface with the formation of polar functional groups [19]. Electrode materials based on carbon such as carbon nanotubes , graphene and activated carbon are the most commonly adopted electrode materials for EC's [25]. Due to their high specific surface area, high level of porosity ,controllable pore size during their synthesis, high electric conductivity, inertness and interconnected microstructure activated carbons obtained by the pyrolysis and activation of polymeric aerogels are used for variety of applications such as hydrogen storage, electrodes in electrochemical batteries and also as promising electrode materials in EC's [26].…”

Effect of nitrogen doping on the electrochemical performance of resorcinol-formaldehyde based carbon aerogels as electrode material for supercapacitor applications

“…The former depends on the electroactive materials used for the fabrication of electrodes and the latter is related to the use of electrolytes with higher operating voltage. Although a higher operating voltage is only attainable when using non aqueous electrolytes, which in turn results in lower power densities due to diffusional and kinetic problems and increase in equivalent series resistances (ESR) [6].…”