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LiNi1/3Co1/3Mn1/3O2(NCM) was coated with graphene oxide(GO) by a simple chemical approach. The prepared materials were characterised using various techniques such as X-ray diffraction (XRD), thermogravimetric analysis, scanning electron microscopy, energy dispersive spectroscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. XRD revealed that the crystal structure and crystallinity do not change after surface modification with GO. The 2.5 wt% GO-coated NCM exhibits stable cycling stability with a capacity retention of 84.2% at 1 C after 100 cycles, which is higher than the corresponding value of 74.3% for the pristine sample. The rate performance results show that the GO coating increases the discharge capacity from 87.1 to 100.9 mAh g −1 at a high rate of 5 C. Therefore, GO-coated NCM is a highly promising cathode material for lithium-ion batteries because it provides good cycling stability and high rate performance.

Graphene Oxide Modified LiNi1/3Co1/3Mn1/3O2 as Cathode Material for Lithium Ion Batteries and Its Electrochemical Performances