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Article Abstract
A magnesium oxide (MgO) coating strategy is proposed for improving the cobalt-free high-nickel LiNiMnO cathode. It is revealed that a MgO coating can stabilize reversible Ni/Ni redox and suppress structural degradation. The MgO coated LiNiMnO exhibits a promising capacity retention of 66.67% after 1000 cycles at 1C rate in a wide voltage range of 2.8-4.4 V.
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