Development and Characterisation of Protonic Ceramic Cells for Hydrogen Pumping

Abstract

This study focuses on the optimization and analysis of anode-supported proton-conducting ceramic cells (ASPCCs) for hydrogen pumping applications within the 112CO2 project. The primary objectives included refining the manufacturing protocols of ASPCCs and investigating various counter-electrodes, particularly a newly developed NiCuO catalyst aimed at reducing carbon deposition during the decomposition of methane. A stable and reproducible manufacturing process was established, yielding cells with a gas-tight, thin electrolyte layer. Electrochemical testing demonstrated performance variations due to microstructural differences and processing conditions, especially concerning sintering temperatures. Post-mortem analyses through SEM and XRD provided insights into the degradation mechanisms and phase evolution in the electrodes. Additionally, the challenges associated with coating and sintering in the presence of PVD coatings were addressed.