Cellulose Nanocrystals as Additives in Electrospun Biocompatible Separators for Lithium-Ion Batteries

Published in ACS Applied Polymer Materials (2023) · American Chemical Society · Open access, CC BY
DOI: 10.1021/acsapm.2c01956

Summary

Separators determine how well a lithium-ion battery holds up, and this study proposes electrospun mats of amorphous poly-D,L-lactide for that role - the first time the polymer has been examined as a separator. Its amorphous character is the point: it should let the electrolyte penetrate the matrix more readily and so influence ionic conductivity. Solutions at 8, 10 and 12 wt% were spun, alone and in different ratios with cellulose nanocrystals added to reduce the hydrophobicity of the scaffold. Both constituents are biocompatible and bioderived, which is unusual in a component normally made from polyolefins.

Authors & Affiliations

  • Antonio Laezza
    Department of Science, University of Basilicata, Potenza, Italy
  • Arcangelo Celeste
    Dipartimento di Chimica, Sapienza University of Rome, Italy
  • Mariangela Curcio
    Department of Science, University of Basilicata, Potenza, Italy
  • Roberto Teghil
    Department of Science, University of Basilicata, Potenza, Italy
  • Angela De Bonis
    Department of Science, University of Basilicata, Potenza, Italy
  • Sergio Brutti
    Dipartimento di Chimica, Sapienza University of Rome, Italy
  • Antonietta Pepe
    Department of Science, University of Basilicata, Potenza, Italy
  • Brigida Bochicchio Corresponding
    Department of Science, University of Basilicata, Potenza, Italy

Linari Electrospinning Systems

Linari high voltage generator
The separators were spun using a high voltage generator from Linari Engineering onto a round copper plate covered with aluminium foil. The control unit of our generators is coded HVG-CONT-LCD; see the generator with web interface.

Topics

Lithium-Ion Batteries Battery Separators Ionic Conductivity Biocompatible Energy Materials

Materials

Poly-D,L-lactide Cellulose nanocrystals
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