Abstract
The Mg-doped LiNi1/3Mn1/3Co1/3O2 cathode materials have been successfully synthesized via a rheological phase reaction method. The structure and properties of the as-obtained samples were measured by XRD, SEM and electrochemical test methods. Though the Mg-doped samples delivered lower initial capacities, the rate performance and the cycling stability were dramatically enhanced. The Mg2+ doped LiNi1/3Mn1/3Co1/3O2 sample (1%) has the most excellent electrochemical performances, it delivers an initial discharge capacity of 177 mAh g–1 at 0.2 C in the voltage of 2.5–4.5 V, and has a capacity retention of 97.7% after 50cycles.
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