Preparation of graphite@Cu powders from ultrasonic powdering technique

Cu-coated graphite (graphite@Cu) powders were fabricated using our invented device through ultrasonic flow electrodeposition. The effects of NaH2PO2, ultrasonic, current density, load of graphite powders, flow velocity, and deposition time on copper were investigated. The results showed that graphite@Cu composite powders with copper content of 50–75 wt.% were electrodeposited in the proper electrolyte. NaH2PO2 could decrease polarization resistance of electrodeposition and improve the Cu coverage of graphite particles. The composite powders could be effectively dispersed in the electrolyte by ultrasonic.