A method of preparing a gel type polymer electrolyte for a lithium-sulphur battery

Technology description

The name of the technology: A method of preparing a gel type polymer electrolyte for a lithium-sulphur battery
Challenge: The use of Lithium-sulfur (Li-S) batteries is still growing in the world. However, current batteries show deficiencies in impregnation with a non-aqueous solution that contains an electrolytic salt. For this reason, we focused on a formulation without any solvents in the photo-initiated cross-linking reaction, which makes it possible to prepare gel polymers that are environmentally friendly. In addition, the use of simple devices and undemanding operating conditions translates into low production costs.
Description: In a new method of preparing a polymer electrolyte, a film of polyethylene glycol dimethacrylate and butyl methacrylate is prepared by a photo-initiated cross-linking reaction and then dipped in an electrolytic solution of bis-trifluoromethane sulfonimide lithium salt in a mixture of solvents. Before mixing both components of the crosslinking reaction with the photoinitiator, nanoparticles of silicon dioxide are dispersed in butyl methacrylate. The main benefit of the composite gel polymer electrolyte with ceramic filler is the suppression of dendrite growth at the electrolyte/electrode interface during cycling. Compared to conventional polymer electrolytes with conductivity from 10-5 to 10-4 S.cm-1, the gel polymer electrolyte prepared by the new method at 25 °C has a conductivity greater than 1 x 10-3 S.cm-1
Commercial opportunity: The new method of preparing a gel-type polymer electrolyte is intended for use by manufacturers of Li-S batteries.
IP protection status: Patent CZ 308295
Development status:

Phase 1

Corresponds with TRL1 and TRL2.

Basic research. A pure research based on the already observed and published facts.

  • TRL 1 represents a summary of known facts without more specific idea of new technology
  • TRL 2 represents a concrete idea of the new invention, which is still at the stage of an idea, the furthest in written form.
Partnering strategy: Collaboration licensing
More information:
Images: No picture inserted
Categories: Chemistry Chemical and bioengineering
Owner of a technology: Univerzita Tomáše Bati ve Zlíně
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