Highly Dense Ba0.9La0.1Ce0.7Zr0.1Y0.15Zn0.05O3-δ Electrolyte Material for Intermediate Temperature Solid Oxide Fuel Cells

Abstract

A new perovskite-type polycrystalline Ba0.9La0.1Ce0.7Zr0.1Y0.15Zn0.05O3−δ (BLCZYZn) electrolyte material was prepared by the solid-state reaction method in pure phase. The material was studied to understand the impact of co-doping of La3+ at the A-site and Zn2+ at the B-site to use in the intermediate temperature solid oxide fuel cells (IT-SOFCs). X-ray diffraction study shows that the material crystallizes in the phase purity with cubic symmetry in Pm-3m space group. Rietveld refinement of the XRD data shows the cell parameter a = 4.445 with 98.35% relative density. Scanning electron microscopy images confirm the highly dense material with distinct grain boundaries. Thermogravimetric analysis shows about 0.30% weight loss from RT to 1000 oC. Electrochemical impedance spectroscopy in in air shows the ionic conductivity of 2.83×10−4 Scm−1 at 700 oC with the activation energy of 0.62 eV. This material indicates great prospects in using as electrolyte for IT-SOFCs.

Recommended Citation

Rahman, Md. Mosfiqur; Hanjala, Abu; Ali, Muhammed; Omeiza, Lukman Ahmed; Raj, Veena; Balela, Mary Donnabelle L.; and Azad, Abul Kalam (2025) "Highly Dense Ba0.9La0.1Ce0.7Zr0.1Y0.15Zn0.05O3-δ Electrolyte Material for Intermediate Temperature Solid Oxide Fuel Cells," Eurasian Journal of Physics and Functional Materials: Vol. 9: No. 2, Article 4.
DOI: https://doi.org/10.69912/2616-8537.1245