Nanoparticle of Li(Ni1/3Co1/3Mn1/3)O-2 with size smaller than 40 nm was obtained by non-aqueous system co-precipitation method. The particle morphology and crystal plane orientation were observed by TEM and HRTEM. Electrochemical properties of this nanostructued material were studied with experiment cells. The results show that the material has high capacity of 160 mAh g(-1) and excellent rate capability for charge and discharge. For the 50C and 100C rate, its capacity remains above 100 mAh g(-1) after tens of cycles. (c) 2005 Published by Elsevier B.V.