The preparation and electrochemical properties of Nd0.6Sr0.4Fe1- xZnxO3- δ cathode materials for intermediate temperature solid oxide fuel cells

Du Xu; Li Songbo; An Shengli; Ni Yang; Xue Liangmei

doi:10.1039/d2cp03478f

The preparation and electrochemical properties of Nd_0.6Sr_0.4Fe_{1- x}Zn_xO_{3- δ} cathode materials for intermediate temperature solid oxide fuel cells

Phys Chem Chem Phys. 2022 Oct 5;24(38):23903-23909. doi: 10.1039/d2cp03478f.

Authors

Du Xu¹, Li Songbo¹, An Shengli², Ni Yang¹, Xue Liangmei¹

Affiliations

¹ School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Inner Mongolia, Baotou, 014010, China.
² School of Metallurgical and Material Engineering, Inner Mongolia University of Science & Technology, Inner Mongolia, Baotou, 014010, China.

PMID: 36165323
DOI: 10.1039/d2cp03478f

Abstract

Nd_0.6Sr_0.4Fe_1-xZn_xO_3-δ perovskite oxides were prepared by solid state synthesis and applied as solid oxide fuel cell (SOFC) cathodes. XRD showed the high uniformity of the synthesized powder. The addition of Zn reduces the coefficient thermal expansion (CTE), and the average CTE is 15.9279 × 10^-6 K when the added Zn content is 0.1. Nd_0.6Sr_0.4Fe_0.96Zn_0.04O_3-δ showed the highest conductivity of 108.78 S cm^-1 at 700 °C. EIS indicated that an appropriate amount of Zn doping can improve the oxygen transport capacity. A single cell with Nd_0.6Sr_0.4Fe_0.96Zn_0.04O_3-δ as the cathode showed a peak power density of 306.37 mW cm^-2 at 800 °C, proving that the introduction of an appropriate amount of Zn can improve the electrochemical performance of a material.