Hydrothermal synthesis of Nd-doped FeTiO3 perovskite electrode for enhanced energy storage applications

Researchers are investigating alternative energy sources owing to reduction of fossil fuels and the subsequent challenges they provide to both humans and the environment. However, supercapacitors (SCs) are potential energy storage resources, owing to their efficient mechanisms, increased power delivery and excellent cyclic life. The present investigation presents a novel hydrothermal route for the fabrication of FeTiO3 and Nd-doped FeTiO3 materials. Electrochemical study of Nd-doped FeTiO3 was explored, which revealed significant specific capacitance (Csp) of 1574.27 F g−1 measured at 1 A g−1. Moreover, observed results indicate a remarkable specific energy (Ed) value of 54.22 Wh kg−1, while the specific power (Pd) of 249 W kg−1 at 1 A g−1 and substantial increase in ion diffusion efficiency, which can be ascribed to its low impedance (Rct = 0.03 Ω) with remarkable cycling stability of 45 h after undergoing 5000th cycles. In two-electrode symmetric performances, Nd-doped FeTiO3 exhibited a specific capacitance (Csp) of 384.09 F g−1 at 1 A g−1 with a remarkable specific energy (Ed) value of 15.55 Wh kg−1, while the specific power (Pd) of 270 W kg−1. However, these results serve to reinforce the viability of utilizing these materials in various energy storage applications.