Phosphorus doped silicon-carbon composite particles were synthesized through a DC arc plasma torch.Silane(SiH4) and methane(CH4) were introduced into the reaction chamber as the precursor of silicon and carbon,respectively.Phosphine(PH3) was used as a phosphorus dopant gas.Characterization of synthesized particles were carried out by scanning electron microscopy(SEM),X-ray diffractometry(XRD),X-ray photoelectron spectroscopy(XPS) and bulk resistivity measurement.Electrochemical properties were investigated by cyclic test and electrochemical voltage spectroscopy(EVS).In the experimental range,phosphorus doped silicon-carbon composite electrode exhibits enhanced cycle performance than intrinsic silicon and phosphorus doped silicon.It can be explained that incorporation of carbon into silicon acts as a buffer matrix and phosphorus doping plays an important role to enhance the conductivity of the electrode,which leads to the improvement of the cycle performance of the cell. Phosphorus doped silicon-carbon composite particles were synthesized through a DC arc plasma torch. Silane (SiH4) and methane (CH4) were introduced into the reaction chamber as the precursor of silicon and carbon, respectively. Phosphine (PH3) was used as a phosphorus dopant gas. Characterization of synthesized particles were carried out by scanning electron microscopy (SEM), X-ray diffractometry (XRD), X-ray photoelectron spectroscopy (XPS) and bulk resistivity measurement. Electrochemical properties were investigated by cyclic test and electrochemical voltage spectroscopy (EVS) .In the experimental range, phosphorus doped silicon-carbon composite electrode exhibits enhanced cycle performance than intrinsic silicon and phosphorus doped silicon. It can be explained that the incorporation of carbon into silicon acts as a buffer matrix and phosphorus doping plays an important role to enhance the conductivity of the electrode, which leads to the improvement of the cycle performance of the cell.