Electrochemical characteristics of LiNi1/3Co1/3Mn1/3O2 powders prepared from microwave-hydrothermally derived precursors

The influence of the preparation conditions in the microwave-hydrothermal process in the morphology and electrochemical properties of LiNi1/3Co1/3Mn1/3O2 powders was investigated in this study When the microwave radiation temperature was raised from 100 degrees C to 180 degrees C, the particles exhibited a less-agglomerated morphology and reduced particle sizes Increasing the microwave radiation temperatures for preparing the precursors increased the LiNi1/3Co1/3Mn1/3O2 powder surface area and also improved the electrochemical performance. When the microwave radiation temperature was increased to 180 degrees C, the discharge capacity of the prepared powders was approximately 170 mAh/g and the retention was 98.5% after 10 cycles The obtained powders exhibited a high lithium-ion diffusion coefficient and good rate capability. These results demonstrate that the microwave-hydrothermal method is a potential process for preparing LiNi1/3Co1/3Mn1/3O2 powders with large specific capacity, good cyclic stability and excellent rate capability. (c) 2010 Elsevier B V All rights reserved.