High energy storage quasi-solid-state supercapacitor enabled by metal chalcogenide nanowires and iron-based nitrogen-doped graphene nanostructures

All Transition Metal Selenide Composed High‐Energy Solid‐State Hybrid Supercapacitor

“…[ 4,9–11 ] The transition metal selenides (TMSs) are an emerging class of typical TMDs and potential candidates for SCs owing to their lower bandgap, excellent electrical conductivity, and superior electrochemical performance. [ 12–14 ] Due to the presence of interstitial selenium, the structure of TMSs can be properly modulated to enable rapid electron transport, which significantly lowers the energy barrier for improving electrochemical performance. [ 15 ] Specifically, selenium belongs to the same group as oxygen and sulfur in a periodic table and shows excellent metal‐like and inherent electrical properties than those of sulfur with higher electrical conductivity selenium (Se, 1 × 10 −3 S m −1 ) than S (S, 5 × 10 −28 S m −1 ).…”

“…[4,[9][10][11] The transition metal selenides (TMSs) are an emerging class of typical TMDs and potential candidates for SCs owing to their lower bandgap, excellent electrical conductivity, and superior electrochemical performance. [12][13][14] Due to the presence of interstitial selenium, the structure of TMSs can be properly modulated to Transition metal selenides (TMSs) have enthused snowballing research and industrial attention due to their exclusive conductivity and redox activity features, holding them as great candidates for emerging electrochemical devices. However, the real-life utility of TMSs remains challenging owing to their convoluted synthesis process.…”

Energy storehouse and a remarkable photocatalyst: Al2S3/Cu2S/Ni17S18 thin film as supercapacitor electrode and pollutants degradation

“…Fuel cells, supercapacitors and batteries are one of the main energy storage devices [19,20]. Supercapacitors can be incorporated in various industrial devices, electric vehicles and equipment used for memory backup [21,22]. Batteries, such as Li ion batteries, have been reported to possess some safety issues [23].…”

Recent Progress in Metal-Organic Framework-Derived Chalcogenides (MX; X = S, Se) as Electrode Materials for Supercapacitors and Catalysts in Fuel Cells

“…These reduction/oxidation reactions occur at or near the surface of the pseudoactive electrode materials, where electrons transfer induces a change in the valence state of the active material [6,7]. EDLCs render higher power density, while pseudocapacitors have higher energy density [8,9]. To exploit these two properties, researchers came up with hybrid asymmetric supercapacitors (ASCs) comprising a capacitive electrode and a pseudocapacitive electrode.…”