화학공학소재연구정보센터
Materials Chemistry and Physics, Vol.129, No.3, 729-732, 2011
High rate performance of novel cathode material Li1.33Ni1/3Co1/3Mn1/3O2 for lithium ion batteries
Li1.33Ni1/3Co1/3Mn1/3O2 with highly ordered structure has been successfully synthesized via a simple co-precipitation process. Charge-discharge tests showed that the initial discharge capacities are 153.0 mAh g(-1) and 128.9 mAh g(-1) at 5C (1000 mA g(-1)) and 10C (2000 mA g(-1)) between 2.5 and 4.5V, respectively. The average full-charge time of this material is less than 12 min at 5 C and 6 min at 10 C. The electrode material composed of the prepared showed a better cyclability. The excellent high rate performance is attributed to the improved ordered layered structure and the electrical conductivity. The excess Li shorten Li+ diffusion distance between these submicron and nano-scaled particles. The results show that Li1.33Ni1/3Co1/3Mn1/3O2 cathode material has potential application in lithium ion batteries. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.