fig3
Figure 3. Two-step extrusion process for fabrication of dry LFP cathode film. (A) Schematic illustration of the two-step extrusion process for fabrication of dry LFP cathodes; left: 1st stage, right: 2nd stage; SEM images of (B) 1st granule after 1st stage and (C) cathode film after 2nd stage from low to high resolution; Digital images of (D) S-LFP cathode film and (E) D-LFP cathode film according to the bending test. LFP: LiFePO4; SEM: scanning electron microscopy; S-LFP: small-sized LFP; D-LFP: developed LFP via two-step extrusion process.








