Three-Dimensional Printing of a LiFePO4/Graphite Battery Cell via Fused Deposition Modeling

Among the 3D-printing technologies, fused deposition modeling (FDM) represents a promising route to enable direct incorporation of the battery within the final 3D object. Here, the preparation and characterization of lithium iron phosphate/polylactic acid (LFP/PLA) and SiO 2 /PLA 3D-printable filame...

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Bibliographic Details
Published in:Scientific reports 2019-12, Vol.9 (1), p.1-14, Article 18031
Main Authors: Maurel, Alexis, Grugeon, Sylvie, Fleutot, Benoît, Courty, Matthieu, Prashantha, Kalappa, Tortajada, Hugues, Armand, Michel, Panier, Stéphane, Dupont, Loïc
Format: Article
Language:English
Subjects:
639/166/988
639/301/299/161/891
639/638/161/891
Black carbon
Chemical Sciences
Electrochemistry
Electrodes
Electrolytes
Filaments
Graphite
Humanities and Social Sciences
Iron phosphates
Lithium
multidisciplinary
Polylactic acid
Printing
Rapid prototyping
Science
Science (multidisciplinary)
Silicon dioxide
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Summary:Among the 3D-printing technologies, fused deposition modeling (FDM) represents a promising route to enable direct incorporation of the battery within the final 3D object. Here, the preparation and characterization of lithium iron phosphate/polylactic acid (LFP/PLA) and SiO 2 /PLA 3D-printable filaments, specifically conceived respectively as positive electrode and separator in a lithium-ion battery is reported. By means of plasticizer addition, the active material loading within the positive electrode is raised as high as possible (up to 52 wt.%) while still providing enough flexibility to the filament to be printed. A thorough analysis is performed to determine the thermal, electrical and electrochemical effect of carbon black as conductive additive in the positive electrode and the electrolyte uptake impact of ceramic additives in the separator. Considering both optimized filaments composition and using our previously reported graphite/PLA filament for the negative electrode, assembled and “printed in one-shot” complete LFP/Graphite battery cells are 3D-printed and characterized. Taking advantage of the new design capabilities conferred by 3D-printing, separator patterns and infill density are discussed with a view to enhance the liquid electrolyte impregnation and avoid short-circuits.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-019-54518-y