LITHIUM-RICH MANGANESE OXIDE CATHODE MATERIAL, PREPARATION METHOD, POSITIVE ELECTRODE PLATE, AND LITHIUM-ION BATTERY
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Mar 27, 2025
app pub date -
Dec 9, 2024
filing date -
Dec 9, 2024
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Abstract
The present disclosure relates to the technical field of lithium-ion batteries, and discloses a lithium-rich manganese oxide cathode material, a preparation method and use thereof, and a positive electrode plate and use thereof. The cathode material has a chemical composition of xLi[Li1/3(Mn1-aMa)2/3]O2·(1−x)LiMn1-bM′bO2. An XRD spectrum of the cathode material has a diffraction peak P(1) in a range of a diffraction angle 2θ1 satisfying [43.5(1−x)+44x]°≤2θ1≤[44(1−x)+45x]°; and the XRD spectrum of the cathode material has a diffraction peak P(2) in a range of a diffraction angle 2θ2 satisfying [17.7(1−x)+18.3x]°≤2θ2≤[19.2(1−x)+19.8x]°, where 0.35≤x≤0.63. The cathode material has high first-cycle efficiency, high discharge capacity, high energy efficiency, high rate performance, and high cycle performance.
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