SYNTHESIS AND ELECTRICAL CHARACTERIZATION OF Li (Ni1/3Co1/3-xMn1/3Mx)O2, (M=Fe, Al, Mg, Cu and X=0.04, 0.08) FOR THE CATHODE OF LI-ION RECHARGEABLE BATTERIES S.W.M.P.W.A.N.B Weerakoon, T.H.N.G Amaraweera and H.W.M.A.C Wijayasinghe