This master thesis explores the suitability of recycled ceramics materials for applications such as electrolytes in Solid Oxide Cells (SOC), focusing on their production using 3D printing techniques, such as Robocasting (RC). Combining recovery strategies for critical raw materials (CRM) with additive manufacturing technologies represents an underexplored research area. This work evaluates the main challenges of combining these two technologies to produce a 3D–printed electrolyte for SOC application. The study is based on an extensive characterisation of the recycled ceramics materials, evaluating their structural, thermal, and electrochemical properties and their 3D printability. Recycled powders from End–of–life (EoL) SOCs were produced via a chemical process and recovered at 3% mol.