Graphite used as anode for lithium ion battery has high reversible lithium intercalate/deintercalate capacity and a flat voltage curve near zero volts vs. lithium. However, there are some problems such as slow lithium ion diffusion rate and poor compatibility with electrolyte solutions. In this work, a coke/graphite composite with core shell structure has been manufactured. The disordered coke shell will protect the graphite core from exfoliat...