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- W4385554089 abstract "Solvent-free (SF) manufacturing of Lithium-ion battery (LIB) electrodes is safer and more environmentally friendly than the traditional slurry casting approach. However, as a young technique, SF manufacturing is under development of its pathways and operation conditions. In different SF processes reported in literature, extrusion is a common step. A detailed model of this process would be extremely computationally demanding. This work proposes a novel simplified discrete element model at the mesoscopic scale for the extrusion during SF manufacturing of LIB electrodes. In addition to active material particles, we consider fluid-like solid particles to approximate the molten polymer and the carbon additive phases. The formulation and other process parameters are taken from our experimental facility that uses extrusion to fabricate filaments for 3D printing of LIB cells. The simulations are carried out in a conical twin-screw extruder. Our approach allows to obtain representative electrode microstructures after extrusion, where electrical conductivity, ionic effective diffusivity, tortuosity factor and porosity are calculated. The model is a proof of concept that is employed to investigate the influence of the extruder speed and the cohesion level on the resulting electrode properties." @default.
- W4385554089 created "2023-08-04" @default.
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- W4385554089 date "2023-08-03" @default.
- W4385554089 modified "2023-10-14" @default.
- W4385554089 title "Mesoscopic Model of Extrusion during Solvent-Free Li-Ion Battery Electrode Manufacturing" @default.
- W4385554089 doi "https://doi.org/10.26434/chemrxiv-2023-g5cfx" @default.
- W4385554089 hasPublicationYear "2023" @default.
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