1. In lithium-ion battery anode materials, enhance more than 3 times capacitance and cycle-index of charge-discharge: 1) To use silicon nanopowder make into silicon nanowires; 2) Coated graphite on silicon nanopowder surface.

2. In high-temperature coating and refractory materials.

3. In diamond composite, used in cutting tool: under high pressure, mixing silicon nanopowder and diamond can get silicon carbide.

4. After purification, metallic silicon can be made into polycrystalline silicon.

5. Silicon reacting with organics, can be used as raw material of organic polymer material.