Office of Commercialization  Natural Protein as a Novel Additive of Commercial Electrolyte for Long-Cycling Lithium Metal Batteries
Natural Protein as a Novel Additive of Commercial Electrolyte for Long-Cycling Lithium Metal Batteries

Natural Protein as a Novel Additive of Commercial Electrolyte for Long-Cycling Lithium Metal Batteries

Description:

Unmet Need: Safe and long-cycling lithium metal batteries

Rechargeable lithium metal batteries (LMBs) are attractive energy storage devices for future electric vehicles due to their extremely high weight energy density. However, the commercialization of LMBs is impeded by safety concerns and poor cycle performance. Lithium (Li) dendrites grown during the cycling process can cause fire or even an explosion when contacted with liquid electrolytes necessary to the process.

The Technology: Bio-derived protein additive to electrolytes in lithium metal batteries

The inventors have developed a protein additive for liquid electrolytes to improve the cycling performance in LMBs. The protein additive induces a homogenous Li ion deposition to alleviate the Li dendrite growth and repairs cracked surfaces to prevent the Li anode from the corrosion caused by liquid electrolytes. With the optimized ratio of protein additive, symmetrical Li cells show the best cycle life of 350 h at the current density of 1 mA cm-2 with a capacity of 1 mAh cm-2. The inventors have also demonstrated the effectiveness of the protein additive for protecting Li anodes in Li|LiFePO4 (LFP) full cells.

Applications:

  • Batteries in electric vehicles
  • Home electronics

Advantages:

  • Improved, long-lasting batteries
  • Safer electronics

Patent Information:

Provisional patent filed

Patent Information: