Nickel vanadate nitrogen-doped carbon nanocomposites for high-performance supercapacitor electrode

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Development of advanced electrode materials is crucial for high-performance energy storage devices.
• Nickel-vanadium compounds offer potential due to their unique electrochemical properties.

Purpose of the Study:

• To synthesize and characterize a novel Ni3V2O8-NC magnetic nanocomposite for supercapacitor applications.
• To evaluate the electrochemical performance of the Ni3V2O8-NC electrode.

Main Methods:

• A nickel-vanadium precursor was synthesized via polymerization and then calcined to form the Ni3V2O8-NC nanocomposite.
• Material characterization included PXRD, Raman, FTIR, FESEM, TEM, and BET analysis.
• Electrochemical performance was assessed using cyclic voltammetry and galvanostatic charge-discharge in a 5 M KOH electrolyte.

Main Results:

• The Ni3V2O8-NC nanocomposite featured N-doped graphitic carbon with Ni3V2O8 nanoparticles (10-15 nm) and a high surface area (146 m²/g).
• The material exhibited magnetic properties with a saturation magnetization of 35.99 emu/g.
• Exceptional capacitance of 915 F/g at 50 mV/s and 1045 F/g at 10 A/g was achieved.
• High energy density (67.34 Wh/kg) and power density (356.67 W/kg) were demonstrated.

Conclusions:

• The synthesized Ni3V2O8-NC magnetic nanocomposite is a highly effective supercapacitor electrode material.
• Its superior electrochemical performance, stability, and eco-friendly synthesis route highlight its potential for next-generation energy storage.
• This work provides a pathway for developing affordable and efficient electrode materials.