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A well-ordered and spherical LiNi_(0.6)Co_(0.2)Mn_(0.2)O_2 cathode material was successfully synthesized from Ni and Mn concentration-gradient precursors via co-precipitation.The crystal structure,morphology and electrochemical properties of LiNi_(0.6)Co_(0.2)Mn_(0.2)O_2 were characterized by X-ray diffraction,scanning electron microscopy,energy-dispersive spectroscopy,and charge-discharge tests.The material delivered an initial discharge capacity of 174.3 mAh/g at 180 mA/g(1 C rate) between 2.8 and 4.3 V and more than 93.1%of that was retained after 100 cycles.In addition,it also exhibited excellent rate capability,high cut-off voltage and temperature performance.
A well-ordered and spherical LiNi_ (0.6) Co_ (0.2) Mn_ (0.2) O_2 cathode material was synthesized from Ni and Mn concentration-gradient precursors via co-precipitation.The crystal structure, morphology and electrochemical properties of LiNi_ (0.6) Co 0.2 Mo 0.2 O 2 were characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy, and charge-discharge tests. The material delivered an initial discharge capacity of 174.3 mAh / g at 180 mA / g 1 C rate) between 2.8 and 4.3 V and more than 93.1% of that was retained after 100 cycles. In addition, it also exhibited excellent rate capability, high cut-off voltage and temperature performance.