Negative Active Material, Negative Electrode Comprising Same, Secondary Battery Comprising Same, And Method For Producing Negative Active Material

Abstract: The present invention relates to negative active material, a negative electrode comprising same, a secondary battery comprising the negative electrode, and a method for producing the negative active material. The negative active material comprises both a surface layer comprising Li, Al, and P, and oxides comprising one or more from the group consisting of Zr, B, Al, Zn, W, and Ti in the interfacial surface between the silicon-based particles and carbon layer, thereby lowering the reactivity of silicate that is highly reactive with water or bases and easily blocking contact with the outside. Therefore, the phase stability of the negative electrode slurry is improved, and charging and discharging efficiency of the negative electrode produced therewith is improved.

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