Fe-based double perovskite with Zn doping for enhanced electrochemical performance as intermediate-temperature solid oxide fuel cell cathode material.

ABSTRACT: This study aims to investigate the implications of transition-metal Zn doping at the B-site on the crystal structure, average thermal expansion coefficient (TEC), electrocatalytic activity, and electrochemical performance of LaBaFe₂O_5+δ by preparing LaBaFe_2-xZn_xO_5+δ (x = 0, 0.05, 0.1, 0.15, 0.2, LBFZ_x). The X-ray diffraction (XRD) results show that Zn²⁺ doping does not change the crystal structure, the unit cell volume increases, and the lattice expands. The X-ray photoelectron spectroscopy (XPS) and mineral titration results show that the oxygen vacancy concentration and Fe⁴⁺ content gradually increase with the increase in doping amount. TEC decreases with the

SUBMITTER: Xue LM 

PROVIDER: S-EPMC10582619 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature