PRELITHIATION SOLUTIONS FOR LITHIUM-ION BATTERIES

摘要

Prelithiation solutions for lithium-based electrochemical cells are provided. The prelithiam solutions include prelithiation salts that are configured to prelithiate the negative electrode of the electrochemical cell. Lithium ions from the prelithiation lithium salt prelithiate the negative electrode when a charging current is passed between the negative and positive electrodes. In some embodiments, the prelithiation solution may function as an electrolyte for the electrochemical cell and further includes an ion conducting lithium-based salt that is stable at the cell operating voltage. Also provided are methods of prelithiation and electrochemical cells including prelithiation solutions.

主权项

1. A prelithiation solution, comprising:
a solvent; a lithium-based salt dissolved in the solvent to form the prelithiation solution; wherein the prelithiation solution is configured to react electrochemically at a lithium-containing positive electrode at a first voltage; and wherein lithium can be removed from the positive electrode at voltages at and above a second voltage that is higher than the first voltage.