Safer High-Voltage Solid-State Batteries

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2020-POL-68955
Researchers at Purdue University have developed new safer high-voltage solid-state batteries. Current solid polymer electrolyte (SPE) battery technologies have poor thermal stability, ionic conductivity that is limited to low temperatures, and are not adaptable to high energy density solid-state lithium batteries. Purdue researchers have fine-tuned a new SPE composite material for batteries with a wide voltage window of ~4.8V, optimized ionic conductivity ~2.4*10^-4 S/cm, and excellent thermal stability at up to ~330 degrees C. In testing, coin cells made from the new composite SPE exhibited 189 J/g of exothermic heat whereas coin cells made from traditional SPEs produced 812 J/g of exothermic heat. The thermally stable composite SPE created by Purdue researchers can be used in lithium-ion batteries.

Advantages:
-Compatible with Higher-Energy Density Batteries
-Excellent Thermal Stability
-Improved Ionic Conductivity
-Optimized Voltage Window
-Safer
-High-Voltage

Potential Applications:
-Lithium-Ion Batteries
-Materials Science and Engineering

Technology Validation:
The new material shows a wide voltage window of ~4.8V, high ionic conductivity ~2.4*10^-4 S/cm, and excellent thermal stability at up to ~330 degrees C.
Dec 7, 2020
Provisional-Patent
United States
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Purdue Office of Technology Commercialization
The Convergence Center
101 Foundry Drive, Suite 2500
West Lafayette, IN 47906

Phone: (765) 588-3475
Fax: (765) 463-3486
Email: otcip@prf.org