This thesis work explores the integration of Phase Change Materials (PCMs) to main-tain the temperature stability of Solid Oxide Fuel Cells (SOFCs) in maritime appli- cations. SOFCs, known for their high efficiency and fuel flexibility, face challenges related to thermal management, especially under dynamic conditions such as load changes and shutdowns. The high operating temperatures, typically between 600°C and 1000°C, necessitate effective thermal management to prevent non-uniform ther- mal stresses and degradation of the cell components. The study investigates the use of metallic PCMs (mPCMs), which offer superior thermal conductivity compared to conventional PCMs like paraffin and hydrated salts. By incorporating mPCMs into the SOFC stack, it is possible to mitigate drastic temperature variations and enhance the preheating of fuel and air inlets.