Patent ID: 10892108

Abstract:
An electrochemical device has a positive electrode, a negative electrode, separators, and an electrolyte. The negative electrode has a first and second negative-electrode active-material layers and a negative-electrode collector which has (i) a first principal face on which the first negative-electrode active-material layer is formed, and (ii) a second principal face having a coated area where the second negative-electrode active-material layer is formed, and an uncoated area where no second negative-electrode active-material layer is formed. The negative-electrode collector has multiple through holes that interconnect the first and second principal faces wherein the boundary of the coated area and the uncoated area intersects the opening of at least one of the multiple through holes. The electrochemical device is such that a metallic lithium is electrically connected to the uncoated area and immersed in the electrolyte, to allow for pre-doping of the negative-electrode active-material layers with lithium ions.