Lithium-rich electrode sheet of lithium-ion battery and preparation method thereof

摘要

The present disclosure provides a lithium-rich electrode plate of a lithium-ion battery and a preparation method thereof. The lithium-rich electrode plate comprises a collector; a film containing an active material and forming on the collector, and forming an elementary electrode plate together with the collector; and a porous lithium sheet covering on the film, wherein a resulting capacity of the porous lithium sheet matches a planned lithium-supplemental capacity to an anode of a lithium-ion battery. The present disclosure can accurately control lithium-supplemental quantity to the anode, improve lithium-supplemental uniformity, improve the first coulombic efficiency, energy density, and electrochemical performance of the battery, and decrease deformation of the cell, furthermore the method can be performed simply and the cost thereof is low.

主权项

1. A lithium-rich electrode plate of a lithium-ion battery, comprising:
a collector; and a film containing an active material and forming on the collector, and forming an elementary electrode plate together with the collector; wherein the lithium-rich electrode plate of the lithium-ion battery further comprising: a porous lithium sheet covering on the film, and a resulting capacity of the porous lithium sheet matching a planned lithium-supplemental capacity to an anode of the lithium-ion battery.