Li-ion batteries (LIBs) are a great success of modem material science.They are based on insertion materials at both the anode and the cathode.However, in spite of more than 20 years of commercialization, LIBs still exhibit a low capacity and they can only deliver low powers [1].Typically, graphite is used at the anode, because Li ions can easily penetrate inside its lamellar structure, inducing only slight strain.