Shanghai lithium ion battery is made up of three basic parts the anode, cathode, electrolyte. As a carrier of the lithium ion storage, the positive and negative - layered crystal material, charging, lithium ion from the positive to take off the embedded after electrolyte embedded negative, negative on rich lithium, lithium anode in a poor state, at the same time, electronic compensation charge from external supply to carbon negative, to ensure that the negative charge balance. Discharge, on the other hand, when the lithium ion from the cathode embedded, after electrolyte embedded the anode, the anode is rich lithium state.

At present, the anode materials is certain, generally USES the carbon - graphite material (lithium ion embedded carbon compounds); So, with the positive material of the anode materials corresponding to the "lithium ion container", the storage of the more, the density of the lithium ions