Only a few researchers used the single-screw extruder for the SF electrode processing. For instance, Park et al. used a single-screw extrusion to mix graphite flakes, carbon additives, and polylactic acid polymer for a 3D printed electrode. Moreover, the first team who implemented extrusion in the SF process to fabricate the LIB electrodes with LTO (Li4Ti5O12) and LiFePO4 (LFP) used a Twin-Screw Extruder (TSE) for mixing binder and ceramic powders. After that, they used a single-screw extruder to build the specific shape of the final product. Almost all research on the SF process was carried out with the TSE, showcasing its critical role in advancing the field . For the single-screw extruder, the mixing only occurs in the narrow gap formed between the screw tip and the mixing chamber wall. Whereas, for the TSE, the mixing process also happens between the two screws, with the material going from one side to another side and from one end to another end. In addition, since the TSE allows for higher shear rates, the mixing of the materials is expected to be more homogeneous than in a single-screw extruder.