A 3D microstructural proof of concept model of extrusion during solvent-free LIB electrode manufacturing is proposed. Active material particles and an equivalent particle consisting of binder and carbon additive were considered. In this respect, some experimental studies with carbon black as well as our SEM images with carbon nanofibers suggest that an explicit consideration of carbon nanofibers in the simulations will improve in future work the description of the carbon additive mixing in extrusion.