Metal-supported solid oxide cells advancements and challenges

This article provides a critical review of the range of electrolytes, electrodes, metal supports, and the state-of-the-art fabrication techniques utilized in the metal-supported solid oxide cells (MS-SOCs), providing valuable insights into the evolving landscape of this technology for hydrogen-based power generation and hydrogen production systems. MS-SOCs, featuring metal substrates that support thin functional electrolyte and electrode layers, offer distinct advantages over conventional solid oxide cell designs. The review emphasizes technological breakthroughs and their implications for future applications, showcasing MS-SOCs as promising candidates for clean and low-emission hydrogen and power generation applications. The challenges and advancements in materials for MS-SOCs, addressing main issues related to the metal supports such as corrosion, inter-elemental diffusion, and cell sintering/fabrication are thoroughly discussed and analysed in this review. Here, we have also explored the advancements in technology demonstrations, focusing on the pioneering work of major research groups while highlighting the upscaling capabilities in this field for future applications. • Metal-supported (MS) cells are the next generation solid oxide cells. • Metal support to enable a compatible CTE, corrosion resistivity, cost-efficiency. • Metal Oxidation is a function of T, p O2 and p H2O , composition, and coatings. • Wet processing and low-temperature methods are key fabrication routes for MS cells.