Study of Cobalt Doped GdAlO3 for Electrochemical Application

Background: Nano perovskite-type structures as denoted by ABO3 (A= RE) have been popular targets of fundamental investigations since they exhibit a wide variety of physical properties depending upon the chemical composition, defects and small changes in atomic arrangements. Methods: GdAlO3: Co²⁺ (1, 3 &9 mol %) was synthesized using the solution combustion method by using stoichiometric quantities of gadolinium nitrate [Gd (NO3)3], aluminium nitrate (Al (NO3)2, and cobalt nitrate Co(NO3)2. Results: The morphology, structure and particle size of the prepared GdAlO3: Co²⁺ sample were characterized by transmission electron microscope (TEM) image. The Fourier transform infrared (FT-IR) spectral analysis confirmed that the as-prepared powder was in pure state. Electrochemical impedance measurements (EIS) of different GdAlO3: Co²⁺ samples were measured vs. Ag/AgCl in the frequency range of 1 Hz to 1 MHz with AC amplitude of 5 mV at steady-state which clearly indicated that Co²⁺ dopant is a successful doping material for the fabrication of supercapacitors. Conclusion: Electrochemical impedance measurements (EIS) of different GdAlO3: Co²⁺ samples were measured vs. Ag/AgCl in the frequency range of 1 Hz to 1 MHz with AC amplitude of 5 mV at steady-state which clearly indicated that Co²⁺ dopant is a successful doping material for the fabrication of supercapacitors. From a future perspective, we believe that GdAlO3: Co²⁺ composite material could be a promising electrode material for the fabrication of various sensors, supercapacitors and solar cells.