University of Delaware OEIP
University of Delaware

Tapered block copolymer electrolytes

Technology #ud14-28

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                      Fig. Represents a scheme for the reaction of tapered block copolymers
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Researchers
Dr. Thomas Epps
The primary focus of the Epps laboratory lies in designing, building, and characterizing new polymeric materials exhibiting molecular level self-assembly.
External Link (sites.udel.edu)
Wei-Fan Kuan
Managed By
Johnson Will
Business Development Specialist 3028314794
Patent Protection

Block copolymer electrolytes for rechargeable lithium batteries

US Patent Pending US-2015-0197585-A1
Publications
Block Copolymer Electrolytes for Rechargeable Lithium Batteries
OURNAL OF POLYMER SCIENCE, PART B: POLYMER PHYSICS, 2014, 52, 1–16

Technology Description:

Due to increasing safety issues with liquid based electrolytes, there has been a great interest in the field of solid state lithium batteries with a solvent free electrolyte. The invention involves a novel block copolymer electrolytes with tapered interfaces between copolymer blocks. Block copolymers are promising materials for conducting applications due to their ability to self assemble into ordered nanostructures. In this invention, a tapered interface between pure block is generated to decouple polymer interfacial interactions from molecular weight and chemical constituents. Thus, tapered block copolymers can be used to create high molecular weight polymer electrolytes, providing improved mechanical properties, while retaining the similar processability as low-molecular-weight materials. Additionally, the salt-doped tapered block copolymers exhibit comparable ionic conductivity relative to salt-doped diblock copolymers. This indicated that it is possible to modify the copolymer composition profile between two blocks, manipulating the polymer interfacial interactions, while maintaining the ability for ion transport.

Benefits:

  • Can be utilized as an electrolyte in energy generation and storage devices 
  • Solvent free electrolyte provides a safe and efficient usage in energy storage devices