Cation and oxyanion doping of layered perovskite BaNd2In2O7: Oxygen-ion and proton transport

Proton-conducting electrochemical devices such as protonic ceramic fuel cells and protonic ceramic electrolysis cells play a major role in the creation of eco-friendly green energy systems. The most studies of proton-conducting materials for these devices are barium cerate zirconates. The layered perovskites are novel class of proton-conducting materials. In this paper, the possibility of cation and oxyanion doping of layered perovskite BaNd2In2O7 was carried out for the first time. The most conductive composition BaLa1.9Sr0.1In2O6.95 demonstrates protonic conductivity value 2$10-5 S/cm at 450 & DEG;C. The acceptor-doped two-layer perovskites are the prospective class of proton-conducting materials, and further modification of their composition opens up a new way in the design of solid oxide protonic conductors. & COPY; 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

This study explores the doping of layered perovskite BaNd2In2O7 with cations and oxyanions, revealing that the composition BaLa1.9Sr0.1In2O6.95 exhibits the highest proton conductivity at 450°C, with a value of 2x10-5 S/cm. The acceptor-doped two-layer perovskites hold promise as proton-conducting materials, and further adjustments to their composition provide a new approach in the design of solid oxide protonic conductors.