Lamination of Separators to Electrodes using Electrospinning

PLoS One. 2020 Jan 28;15(1):e0227903. doi: 10.1371/journal.pone.0227903. eCollection 2020.

Abstract

This study shows the feasibility of the Electrospinning method as a process step for advanced and fast production Li ion cells. Lamination is a key technology for Lithium-ion battery production. It bares different advantages, such as a fast production line speed by fixing the separator to the electrodes. Unfortunately, this technology is inapplicable for separator and electrode formulations not based on thermoplastic binders. Using Electrospinning, this disadvantage can be overcome. In our study, beaded PVDF polymer nanofibres were spun onto a fibre-reinforced, inorganic-filled separator. This modified separator was then laminated onto a NMC111-cathode using a temperature profile of 110/110/120°C within the laminator. After Lamination, the separator was pulled-off again and placed in a SEM to see the adhesive behaviour of the applied polymer. The information gathered with SEM clearly shows a successful lamination of the separator to the electrode.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Electric Power Supplies*
  • Inorganic Chemicals / chemistry*
  • Ions / chemistry
  • Lithium / chemistry*
  • Polymers / chemistry

Substances

  • Inorganic Chemicals
  • Ions
  • Polymers
  • Lithium

Grants and funding

This research was funded by the Bayerische Forschungsstiftung (Bavarian Research Foundation), Grant number AZ-1353-18.