Pre-Lithiation of Electrode Materials in a Semi-Solid Electrode

摘要

Embodiments described herein relate generally to electrochemical cells having pre-lithiated semi-solid electrodes, and particularly to semi-solid electrodes that are pre-lithiated during the mixing of the semi-solid electrode slurry such that a solid-electrolyte interface (SEI) layer is formed in the semi-solid electrode before the electrochemical cell formation. In some embodiments, a semi-solid electrode includes about 20% to about 90% by volume of an active material, about 0% to about 25% by volume of a conductive material, about 10% to about 70% by volume of a liquid electrolyte, and lithium (as lithium metal, a lithium-containing material, and/or a lithium metal equivalent) in an amount sufficient to substantially pre-lithiate the active material. The lithium metal is configured to form a solid-electrolyte interface (SEI) layer on a surface of the active material before an initial charging cycle of an electrochemical cell that includes the semi-solid electrode.

主权项

1. A semi-solid electrode, comprising:
about 20% to about 90% by volume of an active material; 0% to about 25% by volume of a conductive material; about 10% to about 70% by volume of a liquid electrolyte; and lithium in an amount sufficient to substantially pre-lithiate the active material, wherein the lithium comprises at least one of lithium metal, a lithium-containing material and/or a lithium metal equivalent.