| abstract |
The present invention relates to a graphite matrix, a nanosilicon composite anode active material comprising a nanosilicon material uniformly deposited within a graphite matrix. The nanosilicon composite anode active material is prepared by chemical vapor deposition of nanosilicon particles in hollow graphite using a silicon source. The nanosilicon composite anode active material according to the present invention has a high specific capacity (> 1000 mAh / g), a high initial charge / discharge efficiency (> 93%) and a high conductivity characteristic. The manufacturing method according to the present invention is simple in operation, easy to control, low in production cost, and suitable for industrial production. |