Insights on the electrochemical properties of lattice strain induced layered V2O3–Al2O3 nanocomposites derived from the carbonization process

• Published in: Journal of materials science. Materials in electronics 2023-08, Vol.34 (22), p.1636, Article 1636
• Main Authors: Naveen, T. B., Durgalakshmi, D., Mohanraj, J., Kunhiraman, Aruna K, Balakumar, S., Rakkesh, R. Ajay
• Format: Article
• Language: English
• Subjects: Aluminum oxide; Carbon; Characterization and Evaluation of Materials; Chemistry and Materials Science; Electrochemical analysis; Electrodes; Electrolytes; Energy; Lattice strain; Materials Science; Metal oxides; Nanocomposites; Nanotechnology; Optical and Electronic Materials; Phase transitions; Spectrum analysis; Stability; Vanadium oxides
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-023-11082-6

Herein we report an innovative and reliable synthesis route to form layered V 2 O 3 –Al 2 O 3 nanocomposite, where two separate reactions can be made to occur in a chain that leads to nanocomposite formation. The Al 2 O 3 is helps in tackling the stability of V 2 O 3 and ion transfer issues that usually metal oxides encounter. The formation of layered structures and lattice strain-induced V 2 O 3 –Al 2 O 3 nanocomposite plays a major role in enhancing electrochemical performances. Also, the cyclic stability shows an significant increase with 84% capacitive retention even after 2500 cycles. The prepared layered V 2 O 3 –Al 2 O 3 nanocomposite showcases exceptional specific capacitance values even at high scan rates (304 Fg −1 at 100 mV), and fast charge capacity, providing it with an edge over other materials to find applications in high-power utilities.