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The voltage fade on lithium-rich layered oxides could be alleviated by substitution of Mn and Ni for Cr. A series of Cr substituted lithium-rich layered oxides, (Li1.2Mn0.6-xNi0.2-xCr2xO2, x = 0, 0.03, 0.065, and 0.1) was prepared by the ethylenediaminetetraacetic acid (EDTA) sol-gel method. For x = 0.03, the reduced voltage fade and a superior capacity retention were obtained, leading to a higher...
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