In this paper the properties of nano graphite as anode material in Li-ion batteries and the possibility of using nano graphite as an addition to silicon to improve electrochemical properties and to create superior anode materials for lithium storage were investigted. Physical characterization of materials was carried out in order to create a correlation between structure and properties of materials. The characterization of materials by TGA analysis showed a weight loss of only 0,2 %. FTIR analysis showed the lack of water and low presence of oxygen groups, which was confirmed by TGA analysis. The particle size analysis by the DLS technique revealed a size of 420 nm with narrow distribution by volume and number of particles. B.E.T analysis showed a surface area of 61 m^2/g and pore size of 19.2 Å, which belong to the micropore sizes. Electrodes, on which electrochemical tests were conducted, were prepared by applying a paste made from nano graphite and silicon samples mixed with carbon black and polyvinyldenfluoride in various proportions, in the form of a thin film on copper foil. Electrochemical tests were conducted using methods of cyclic voltammetry, galvanostatic charge and dischrage and electrochemical impedance spectroscopy. Cyclic voltamtery showed that addition of the carbon black achieves better reversibility of lithium intercalation. Nano graphite as an addition to silicon showed a loss of certain electrochemical properties due to the change in the intercalation mechanism. Voltage profiles show the stability of all materials during the charging or discharging cycles. The highest capacity of 24.01 mAh g^-1 was achieved for the nano graphite sample with carbon black , while for the silicon sample, 13.59 mAh g^-1 was achieved. Impedance measurements showed a reduction in internal resistance and resistance to charge transfer after completed charging and discharge cycles, whereby a sample of nano graphite with carbon black successfully showed the formation of the SEI layer after a few of the charging and discharging cycles.