Synthesis and electrochemical performance of Li(Ni_(1/3)Co_(1/3)Mn_(1/3))_(1-y)Sn_yO_2

Li -ion battery cathode materials Li (Ni1/3Co1/3Mn1/3)1 -ySnyO2 (y =0,0.01,0.02,0.05,0.10) were synthesized by carbonate co-precipitation. Its crystal structure and morphology were analyzed by XRD, SEM, its electrochemical properties were studied by AC impedance (AC) and galvanostatic charge - discharge. Li (Ni1/3Co1/3Mn1/3)0.98Sn0.02O2 had the best performance, in which initial specific discharge capacity at 0.5 C was 173.31 mAh/g, the specific discharge capacity was 149.55 mAh/g after 30 cycles, so the capacity retention was 86.29%.