Efficient Deposition of Thin CGO Films by Ultrasonic Spray Pyrolysis for Solid Oxide Cells

Description

Green gases like hydrogen or syngas are urgently needed for the industrial decarbonization. Given their high efficiency for direct CO2 reduction, solid oxide electrolyser cells (SOECs) are a promising technology. Yet, the scarcity and related cost of the oxygen electrode materials present a major challenge. Typically, the perovskite mixed ionic conductor is composed of lanthanum, strontium, cobalt, and iron (LSCF). Furthermore, a gadolinium-doped-cerium (CGO) diffusion barrier is required between the LSCF electrode and the zircon-based electrolyte to prevent the formation of non-conductive secondary phases. To this end, thin film deposition methods are a promising approach since less material is needed compared to conventional methods. Ultrasonic spray pyrolysis (USP) is a non-vacuum thin film deposition methods of particular interest due to its versatility, low cost and scalability. In the present work the interplay of the relevant USP parameters, a recently presented deposition recipe and the electrochemical performance of such deposited CGO thin films are concisely discussed.

Period	17 Jul 2025
Event title	19th International Symposium on Solid Oxide Fuel Cells (SOFC-XIX)
Event type	Conference
Location	Stockholm, SwedenShow on map