| abstract |
A preparation method for a silicon-carbon composite anode material. The anode material forms a multi-phase composite system by means of combination of silicon, metal and carbon, such that the high capacity of the material is guaranteed, and the volume expansion and shrinkage effect in a charge-discharge process can be relieved. The silicon and the metal are dispersed in a cracking carbon system, the metal improves the conductivity, the silicon has the characteristic of high capacity, cracking carbon provides mechanical support, and the material structure is stabilized. The silicon-carbon composite anode material of the present invention has high compaction density, good processing performance, high conductivity, high first efficiency and excellent cycle stability. A preparation process for the anode material provided by the present invention is simple, the cost of raw materials is low, and the anode material is environmentally-friendly, pollution-free and suitable for industrial production. |