The present invention advantageously provides a high-
voltage lithium battery
cathode material and its general formula for the composition of the high-
voltage lithium battery
cathode material presented in this invention:LiMn1.5Ni0.5-XMXO4 Of which: 0<X≦0.2, M represents one or several elements comprised by
copper,
zinc,
magnesium, aluminum,
cadmium,
zirconium, and
titanium.The present invention relates to a high-
voltage lithium battery
cathode material, which utilizes the liquid-phase co-
precipitation method to dope
transition metal elements, so that all elements could be mixed at the atomic level and obtain a relatively uniform product, stabilizing the
crystal structure, avoiding the capacity attenuation caused by
structure collapse in the material
cyclic process; in addition, this invention has also increased the
conductivity, improved the capacity of 5 V platform, thereby avoiding the substantial damage to the
battery system resulted from the
decomposition of the
electrolyte. Thus, a newly high-voltage
lithium battery cathode material featured with good electrochemical properties and cycle performance has been proposed in the present invention; moreover, the utilization of liquid-phase co-
precipitation has the advantages of simple synthesis method, convenient operation process, easier to control, high yield coefficient, low
energy consumption, and easy-to-industrial production.