Lithium Ion Batteries (LIBs) are widely used in products such as mobile phones and computers, energy storage for renewable energy source and recently, electric vehicles. The size of the active material has a great affect on the electrochemical performance. Smaller particle size can shorten the path for lithium diffusion; in terms enhance the rate capability. However, if the size is too small, i.e. nanosize, the high surface area can induce diverse reaction and cause the poor cycling performance (Sinha et al. 2008). The possible methods reduce the size include (1) changing the parameter during synthesis, like temperature, (2) selecting certain particle size after synthesis, like sieving and (3) reducing the size after synthesis like ball-milling.