为了进一步提高镍锰酸锂正极材料的电化学性能,对其进行了三氧化钼包覆改性,分析结果表明:三氧化钼包覆没有改变镍锰酸锂正极材料的基本结构,在 0.2 C 倍率下首次放电比容量为120 mAh·g-1,库仑效率为93.76%.50次循环后容量几乎没有衰减,说明适量的三氧化钼包覆改性镍锰酸锂正极材料会提高其电化学性能.
Modification of Lithium Nickel Manganate Cathode Material by Molybdenum Trioxide Coating
In order to further improve the electrochemical performance of lithium nickel manganate cathode material,it was modified by molybdenum trioxide coating.The analysis results showed that the molybdenum trioxide coating did not change the basic structure of lithium nickel manganate cathode material,and the first discharge specific capacity was 120 mA·h·g-1 at 0.2 C rate,and the Coulomb efficiency was 93.76%.After 50 cycles,the capacity had almost no attenuation,which showed that modification of lithium nickel manganate cathode material by appropriate amount of molybdenum trioxide coating could improve its electrochemical performance.
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