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Article Dans Une Revue Scientific Reports Année : 2019

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

Alexis Maurel
Sylvie Grugeon
Benoît Fleutot
  • Fonction : Auteur
Matthieu Courty
Kalappa Prashantha
  • Fonction : Auteur
Hugues Tortajada
  • Fonction : Auteur
Michel Armand
  • Fonction : Auteur
Stéphane Panier

Résumé

Abstract 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.

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Chimie
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hal-04241937 , version 1 (14-10-2023)

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Alexis Maurel, Sylvie Grugeon, Benoît Fleutot, Matthieu Courty, Kalappa Prashantha, et al.. Three-Dimensional Printing of a LiFePO4/Graphite Battery Cell via Fused Deposition Modeling. Scientific Reports, 2019, 9 (1), pp.18031. ⟨10.1038/s41598-019-54518-y⟩. ⟨hal-04241937⟩
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