Advancing energy storage and supercapacitor applications through the development of Li + -doped MgTiO 3 perovskite nano-ceramics.

Autor: Magar HS; Applied Organic Chemistry Department, National Research Centre (NRC), 33 El‑Bohouth St., Dokki, 12622, Cairo, Egypt., Mansour AM; Solid State Physics Department, Physics Research Institute, National Research Centre, 33 El Bohouth St., Dokki, 12622, Giza, Egypt., Hammad ABA; Solid State Physics Department, Physics Research Institute, National Research Centre, 33 El Bohouth St., Dokki, 12622, Giza, Egypt. abohmad2@yahoo.com.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Jan 22; Vol. 14 (1), pp. 1849. Date of Electronic Publication: 2024 Jan 22.
DOI: 10.1038/s41598-024-52262-6
Abstrakt: Perovskite oxide materials, specifically MgTiO 3 (MT) and Li-doped MgTiO 3 (MTxLi), were synthesized via a sol-gel method and calcination at 800 °C. This study explores the impact of varying Li doping levels (x = 0, 0.01, 0.05, and 0.1) on the crystalline structure and properties of MgTiO 3 . X-ray diffraction analysis revealed a well-defined rhombohedral MgTiO 3 phase. Optical diffuse reflectance measurements provided insights into energy gap values, refractive index, and dielectric constant. Li + doping enhanced the electrical properties of MgTiO 3 , with a notable phase transition observed at 50 °C. The study investigated impedance and AC conductivity under varying temperature and frequency conditions (25-120 °C, 4 Hz to 8 MHz). Electrochemical analysis through cyclic voltammetry and electrochemical impedance spectroscopy confirmed highly electrocatalytic properties for MTxLi, particularly when modified onto screen-printed electrodes. This work not only advances the understanding of Li-doped MgTiO 3 nanostructures but also highlights their significant potential for direct electrochemical applications, particularly in the realm of energy storage.
(© 2024. The Author(s).)
Databáze: MEDLINE
Externí odkaz: