Considering lithium-ion battery 3D-printing via thermoplastic material extrusion and polymer powder bed fusion

Ag-Coated Cu/Polylactic Acid Composite Filament for Lithium and Sodium-Ion Battery Current Collector Three-Dimensional Printing via Thermoplastic Material Extrusion

“…While a polar polymer matrix (PLA) was introduced in this preliminary study, it must be replaced in the future by a nonpolar and inert matrix such as polyolefin (PP or PE). Indeed, as demonstrated in our previous study (Maurel et al, 2020b), PLA swells when soaked in the liquid electrolyte; thus, it is suspected to have a detrimental effect on electronic conductivity. While this behavior is particularly interesting for a separator, it will significantly limit the long-term mechanical performance of a current collector.…”

“…As depicted in our previous articles (Maurel et al, 2018;Maurel et al, 2019;Maurel et al, 2020a;Maurel et al, 2020b), a Filabot Original extruder provided by Filabot Triex LLC, United States, was fed consistently with 3 × 3mm composite film pieces to get standard 1.75mm diameter 3D printing filaments. Extruder temperature was set about 20°C higher than the melting temperature of the composite film deduced from DSC.…”

“…The elaboration of a composite filament, here comprising PLA/ Ag-coated Cu/PEGDME500 (wt% 9.6/86.5/3.8), specially designed to be used as a current collector within a LIB or SIB was initiated. Analogous to what was done in our previous studies regarding electrodes (Maurel et al, 2018;Maurel et al, 2019;Maurel et al, 2020b), separator (Maurel et al, 2019) or solid polymer electrolyte (Maurel et al, 2020a), the sample was first of all characterized via DSC. From this experiment, as shown in Figure 3A, serving here as a reference, neat PLA displays an endothermal peak related to the melting temperature (Tm) at 146C and a sharp peak corresponding to the glass transition (Tg) appearing at 63C.…”

“…This trend can be simply justified by the new design freedom offered by the innovative additive manufacturing (AM) processes. Indeed, thanks to such cutting-edge technology, it is now possible to imagine the development of LIB threedimensional (3D) architectures reported to increase the electroactive surface area greatly, allowing the Li + diffusion towards two or three dimensions and thus improving the final electrochemical performance of the battery in terms of specific capacity and power (Trembacki et al, 2019;Maurel et al, 2020b); on the other hand, conventional 2D LIB architectures of the positive electrode, separators, negative electrode, and current collector are stacked or rolled (parallel plates configuration), previously reported to allow only Li + diffusion in 1D. While 3D LIB structures, originally proposed by Long et al (Long et al, 2004;Long et al, 2020), were extensively developed independently through traditional techniques such as electrodeposition, the assembly of both electrodes manually was reported to be particularly complex due to the irregular electrode surfaces causing short circuits (Taberna et al, 2006).…”

Effect of different parameters on the tensile properties of printed Polylactic acid samples by FDM: experimental design tested with MDs simulation

“…The extruder is placed on a three-dimensional CNC table that moves in the x, y and z directions and places the molten polymer inside the extruder on the part [31,32]. After nishing one layer, the extruder moves upwards as thick as one layer [33][34][35][36][37]. It is important to note that many parameters affect the quality and nal properties of a sample printed with FDM [38][39][40][41][42].…”