Safer High-Voltage Solid-State Batteries

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.

TRL: 3

Intellectual Property:

Keywords: Battery, Chemical Engineering, Composite, Composites, Lithium-Ion Battery, Materials and Manufacturing, Mechanical Engineering, Solid State Electrolyte, Thermal Runaway, Thermally Conductive