One of the most promising 3D printing methods for battery fabrication is the Fused Filament Fabrication (FFF) process, also known as Fused Deposition modeling (FDM) . In the FFF process, filaments are to be made from an assembly of AM, conductive additives and binders, which are blended using (i) molten thermoplastic polymers as the carrier phase and (ii) an extrusion (hot-melt) process. This produces filaments with good properties for the subsequent 3D printing process, namely the ability to be rolled and melted again in the printer nozzle. The quality of the 3D printing filaments is strongly influenced by the formulation and granulometry of the used materials (i.e., particle size and weight percentage of AM, carbon additive in the form of particles and/or nanofibers, binder and plasticizer).