▎ 摘　　要

NOVELTY - An electrode with self-protective layer is manufactured by preparing a negative active material solution including silicon particles and an additive; coating the solution on a substrate; drying the coated solution to form an electrode; and irradiating light from an upper portion of the electrode to form a self-protective layer on the upper portion of the electrode. USE - Manufacture of electrode with self-protective layer for use in lithium battery. ADVANTAGE - As the silicon particles contained in the silicon particles are oxidized and the polymers are carbonized, when the electrode is used as a negative electrode of a lithium battery, ion mobility in a vertical direction increases and electrical conductivity in a horizontal direction increases. The volume change of the oxidized silicon particles formed in the self-protective layer is reduced, and the volume expansion is reduced according to the pore structure and the interwoven structure. As a result, the expansion and contraction of electrode is repeated during the charging and discharging process of the actual lithium battery, and the separation of the material constituting the electrode due to the change in the volume of the electrode is minimized and the bonding force between the upper and lower sides of the electrode is increased. Excellent electrical performance even through repeated charging and discharging is maintained, and the charge/discharge capacity retention rate is increased.