Facile synthesis of hierarchical ZnS@FeSe2 nanostructures as new energy-efficient cathode material for advanced asymmetric supercapacitors

Iron-selenide-based titanium dioxide nanocomposites as a novel electrode material for asymmetric supercapacitors operating at 2.3 V

“…(01-074-0247). 47 Likewise, in the case of pure TiO 2, the diffraction peaks at 2q values of (25.30°), (38.5°), (48.03°), (53.8°), (55°), (62.69°), (68.76°), (70.2°), (75.05°), and (82.76°), which are, respectively, assigned to (101), ( 112), ( 200), (1050, (211), ( 204), ( 116), ( 220), ( 215) and ( 224) planes of the tetragonal anatase structure as they matched well with the peaks from the JCPDS card no. 01-084-1285.…”

“…Among these appealing compounds, iron selenide (symbolized as FeSe 2 ) is a p-type semiconductor with a quiet narrow bandgap energy of (1.0 eV), one of the most appealing candidates for supercapacitors owing to its fascinating features, such as high theoretical capacity, high adsorption coefficient and fast electron transfer applied in batteries, solar cells, [42][43][44] and rarely reported for supercapacitors. [45][46][47] For example, graphene-wrapped FeS 2 -FeSe 2 core-shell cratered sphere anode was prepared, which delivered remarkable charge storage performance in energy density and 158 Wh kg −1 at 2236.16 W kg −1 . 48 Another report involved fabricating exible asymmetric supercapacitors based on NiCo 2 O 4 and FeSe 2 as the cathode and anode, respectively, and operating in a stable operated in a voltage of 1.5 V, which exhibited superior energy storage performance and long-term stability of 1000 successive cycles could be ascribed to the pseudocapacitive charge storage mechanism of both electrodes, which collectively enhanced electrochemical performance substantially.…”

Boosting the electrochemical performance of ZnO nanomaterials through a conductive CuS matrix for aqueous supercapacitors

“…[10][11][12][13][14][15][16] Therefore, preparing electrode materials with excellent electrochemical properties is the key to improving SC application performance. [17][18][19] Transition metal oxides have gained attention as active electrode materials for supercapacitors due to their greater specific capacitance resulting from faradaic electrochemical processes on the surface of electrode materials. 20 Zinc oxide (ZnO) is a promising option for supercapacitor applications among the transition-metal oxides that have been thoroughly explored.…”

Evaluation of Supercapacitor Properties of Radio Frequency Sputter Binder‐Free and Nanosandwich WO3/SiO2/WO3 Thin Film

“…While batteries can achieve high energy density, they are often limited in power density. [ 3 ] Based on recent studies, supercapacitors are being recognized as a strong contender to replace batteries soon. However, unlike battery technology, supercapacitors are prone to experiencing irreversible redox reactions.…”