One of the most important goals of the development of lithium ion battery is to get cathode materials with high capacity，and silicon materials with up to 4 200 mAh/g theoretical specific capacity have attracted researchers interest. However

the volume effects of silicon anode materials result in the rapid decline in the electrochemical cycling performance and limit its application in production. It researched Si and graphite doped through different proportions

with the method of high-energy ball milling and annealing. The results show that at the ratio of 2:1

the first specific discharge capacity can reach 2136.4 mAh/g. The capacity decays more slowly when silicon is doped with graphite

and 85.3% capacity is retained after 35 cycles. The silicon and graphite hybrid material presents a promising direction

and plays an important role in the production and application for anode materials for lithium ion batteries.