In-site pulse electrodeposition of manganese dioxide/reduced graphene oxide nanocomposite for high-energy supercapacitors

Recent Advancements in Electrochemical Deposition of Metal‐Based Electrode Materials for Electrochemical Supercapacitors

“…The most common form of electrochemical deposition technique is the electrodeposition method. [94] In this method, a coating or film of material is created on the surface of the substrate material by the application of an electric current. Electrode materials can be deposited due to the attractive force of oppositely charged particles.…”

“…Wang et al [80] have reported efficient electrophoretic deposition of MXene/reduced graphene oxide (MXene/rGO) for supercapacitors. Mahdi et al [94] have reported electrodeposition of manganese dioxide/rGO nanocomposite for high-performance supercapacitors, which delivered a specific capacitance of 577.9 F/g at 0.5 A/g current density and exhibited energy density of 80.3 Wh/kg at a power density of 25 kW/kg. The capacitance and charge storage mechanisms intimately rely on electrode materials.…”

“…As a result, electrochemical deposition techniques for synthesizing supercapacitor electrode materials can be considerably simplified. The most common form of electrochemical deposition technique is the electrodeposition method [94] . In this method, a coating or film of material is created on the surface of the substrate material by the application of an electric current.…”

Nanostructure Design of MnO2/Partially Oxidized Graphene Nanocomposite Cathode via One-Step Pulse Potential Strategy: Toward Ultralong-Life Zinc-Ion Batteries

“…The results, presented in Table S2, confirm that the simultaneous synthesis of MnO 2 and POG yields a MnO 2 phase characterized by a more refined crystallite size, in contrast to the pristine α-MnO 2 phase. 46 Raman spectroscopy was employed to characterize α-MnO 2 , raw CNTs, and MnO 2 /POG nanocomposites (Figure 2b). The Raman spectra of pure α-MnO 2 exhibit two distinct peaks centered at 578 and 635 cm −1 , which correspond to the stretching vibrations of ν 3 (Mn−O) and symmetric stretching vibrations of ν 2 (Mn−O) within octahedra MnO 6 groups, respectively.…”

“…Electrodeposition methods are carried out under atmospheric pressure; no hazardous chemicals are employed. Besides, materials with tunable properties could be produced by controlling the electrochemical parameters. ,− To date, different forms of electrodeposition methods, including potentiostatic, galvanostatic, and pulse techniques, , have found widespread application in material synthesis. However, pulse electrodeposition exhibits distinct advantages over galvano/potentiostatic methods.…”