Lithium Secondary Battery

Abstract: The present application relates to a lithium secondary battery, comprising a silicon-based negative electrode; a positive electrode; a separator; and an electrolyte, wherein the positive electrode or siliconbased negative electrode is a pre-lithiated electrode, wherein a silicon discharge capacity use range of the silicon-based negative electrode is 35% or less of a total negative electrode discharge capacity, and wherein an upper end of the silicon discharge capacity of the silicon-based negative electrode is 57% or less and a lower end thereof is 13% or more.

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