Lithium secondary battery and manufacturing method therefor

Abstract

The present disclosure relates to a lithium secondary battery and a manufacturing method therefor. One embodiment provides a lithium secondary battery comprising: an anode current collector; a lithium host layer disposed on the anode electrode current collector; a cathode current collector; a cathode mixture layer disposed on the cathode current collector; a volume change absorption layer which is disposed on the cathode mixture layer, and which has a three-dimensional network structure in which an engineering plastic resin is formed in a nanofiber form; and a separator disposed between the volume change absorption layer and the lithium host layer, wherein the lithium host layer is formed such that lithium derived from the cathode mixture layer is plated, and the volume change absorption layer has an elastic restoring force.

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