NU 2024-049
INVENTORS
Davy Zeng
Cory Thomas West
Mark C. Hersam*
SHORT DESCRIPTION
A novel method for producing kaolinite nanoplatelets to enhance the safety and efficiency of lithium metal batteries.
BACKGROUND
Traditional liquid electrolytes for lithium-ion batteries are highly flammable. Despite extensive research into less flammable solid-state electrolytes, few examples have been produced with earth abundant materials while concurrently providing sufficient performance for commercial viability. The use of a nanocomposite gel electrolyte consisting of kaolinite nanoplatelets resolves both issues. Nanosized kaolinite made from a scalable shear mixing method results in a low cost electrolyte with minimal supply chain concerns.
ABSTRACT
This technology outlines a scalable method for the production of kaolinite nanoplatelets (KNPs), which are used to create solid-state electrolytes for lithium metal batteries. The process includes mixing kaolinite with ethanol and a dispersing agent, centrifugation, and annealing to produce KNPs with a partial coating of oxidized amorphous carbon. This method results in a nonflammable, clay-based nanocomposite electrolyte that is safer and more efficient than current lithium-ion battery technologies.
APPLICATIONS
High-rate rechargeable batteries for consumer electronics
Energy storage solutions for renewable energy systems
Advanced battery technologies for electric vehicles
Broader applications in nanocomposite materials and coatings
ADVANTAGES
Enhanced safety
composed of nonflammable materials
Higher energy density:
More efficient than current lithium-ion battery technology
Environmentally friendly and scalable production process
Use of earth abundant materials
Potential for broader application
Readily applicable to nanocomposite materials and coatings