Disclosed is a negative active material for a rechargeable lithium battery including a composite of a graphite particle and at least one supermicroparticle, wherein the supermicroparticle has a diameter in the range of 1 nm to 100 nm, is produced using an evaporation method under a gas atmosphere, and includes elements alloyable with lithium. Input of a call back number is received. The cathode electrode is arranged in a first plane and the at least one electron emitter is arranged in a second plane parallel to the first plane and the cathode electrode and each electron emitter are separated by a same distance measured in a third plane parallel to the first and second planes.