Fabrication and investigation of Nd_1-xSr_xTi_0.80Fe_0.20O₃(0.10 ≤ x ≤ 0.40) perovskite material for electrode of solid oxide fuel cell

The perovskite Nd_1-xSr_xTi_0.80Fe_0.20O₃ (x = 0.10, 0.20, 0.30, and 0.40) tailored by solid state route technique. The impact of Sr²⁺ substitution on the phase structure, thermal firmness and electrochemical characteristics of the materials are examined in this work, which details the effective synthesis of a series of Sr²⁺ doped Nd_1-xSr_xTi_0.80Fe_0.20O₃ (x = 0.10,0.20,0.30,and 0.40). All the fabricated samples reveal orthorhombic structure with Pbnm space group, while FE-SEM analysis shows that grains are well connected and distributed uniformly. Density has been measured by Archimedes principle and found to be decreased with dopant. Weight change at high temperature found to be decreased. With increasing Sr²⁺ quantity the electrical conductivity of materials varies from 88–108 Scm⁻¹ and the activation energy from 2.01–1.07 eV. Among all the materials Nd_1-xSr_xTi_0.80Fe_0.20O₃ for x = 0.40 display best electrical properties with electrical conductivity 108 Scm⁻¹ and activation energy 1.07 eV at 600 °C and could be utilized as electrode materials especially cathode for the application of solid oxide fuel cell.