Lamination of Separators to Electrodes using Electrospinning

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 electr...

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Bibliographic Details
Published in:PloS one 2020-01, Vol.15 (1), p.e0227903-e0227903
Main Authors: Springer, Bernhard Christian, Frankenberger, Martin, Pettinger, Karl-Heinz
Format: Article
Language:English
Subjects:
Adhesives
Binders
Electric cells
Electric Power Supplies
Electrodes
Electrospinning
Engineering and Technology
Feasibility studies
Fiber reinforced polymers
Humidity
Information management
Inorganic Chemicals - chemistry
Ions - chemistry
Laminates
Lamination
Lithium
Lithium - chemistry
Lithium-ion batteries
Manufacturing
Morphology
Nanofibers
Physical Sciences
Polymer industry
Polymers
Polymers - chemistry
Polyvinylidene fluoride
Production management
Rechargeable batteries
Separators
Technology
Technology application
Temperature profiles
Thermoplastics
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Summary: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.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0227903