Negative electrode active material, method of manufacturing the negative electrode active material, and negative electrode including the negative electrode active material

A method of manufacturing a negative electrode active material, the method comprising:

• forming metal particles within pores of a porous particle;
• forming silicon nanowires within the pores using the metal particles as a catalyst;
• and
• forming an amorphous carbon coating layer on a surface of the porous particle.

A negative electrode comprising:

• a negative electrode current collector;
• and
• a negative electrode active material layer on the negative electrode current collector,
• wherein the negative electrode active material layer comprises negative electrode active materials,
• wherein an amount of the negative electrode active materials in the negative electrode active layer is about 80 wt % to about 99 wt % based on a total weight of the negative electrode active material layer,
• wherein the negative electrode active materials comprise a first negative electrode active material,
• wherein the first negative electrode active material comprises a porous particle and an amorphous carbon coating layer surrounding the porous particle,
• wherein the porous particle includes metal particles and silicon nanowires in pores of the porous particle, and
• wherein a specific surface area (BET) of the first negative electrode active material is from about 1.0 m2/g to about 7.0 m2/g.