Nowadays, the global energy scenario is undergoing a remarkable shift as the world endeavours to cut greenhouse gas emissions by transitioning to more sustainable energy sources. Within this framework, hydrogen has emerged as an important energy vector for decarbonisation, being a potential storage for renewable energy systems. In recent years, green hydrogen produced by water electrolysis with reversible electrochemical devices demonstrated to be a feasible way to reduce emissions. Among many electrochemical devices, high-temperature electrolysers and fuel cells with ceramic-based electrolytes demonstrated to provide high conversion rates and efficiency. According to the electrolyte material and the ionic conduction mechanism, ceramic-based cells are classified into solid oxide fuel cells (SOC) and proton conducting cells (PCC).