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WARF: P01416US

Solid Polysiloxane Electrolyte for Use in Lithium Batteries


INVENTORS -

Robert West, Zhengcheng Zhang

The Wisconsin Alumni Research Foundation (WARF) is seeking commercial partners interested in developing a solid, polysiloxane-containing polymer composition for lithium batteries.
OVERVIEWLithium batteries, such as those found in wristwatches, cell phones and computers, are typically filled with a viscous, liquid polymer electrolyte. These batteries are often preferred over conventional batteries because they provide high levels of power per unit weight; however, due to the danger of liquid leakage, for safety reasons they can’t be used for certain applications, such as implantable medical devices.
THE INVENTIONUW-Madison researchers have now developed a solid, polysiloxane-containing polymer composition for lithium batteries. In addition to polysiloxanes, the polymer mixture contains a cross-linking molecule, a catalyst and an inhibitor. The mixture exists initially as a liquid that can be poured into batteries. When heated to 50 to 75°C, the polymer gradually solidifies into a soft, flexible gel.
APPLICATIONS
  • Implantable pumps
  • Devices for delivering electrical stimulation to treat disorders such as epilepsy, chronic pain and incontinence
KEY BENEFITS
  • Provides a solid electrolyte for lithium batteries with virtually the same conductivity as conventional liquid electrolytes
  • Possesses good mechanical strength and excellent thermal and electrochemical stability
  • Polymer is easily and efficiently synthesized from known, readily-obtained materials.
ADDITIONAL INFORMATION
For More Information About the Inventors
Contact Information
For current licensing status, please contact Mark Staudt at mstaudt@warf.org or 608-960-9845.
The WARF Advantage

Since its founding in 1925 as the patenting and licensing organization for the University of Wisconsin-Madison, WARF has been working with business and industry to transform university research into products that benefit society. WARF intellectual property managers and licensing staff members are leaders in the field of university-based technology transfer. They are familiar with the intricacies of patenting, have worked with researchers in relevant disciplines, understand industries and markets, and have negotiated innovative licensing strategies to meet the individual needs of business clients.