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In the present study, LiMn2O4 cathode powders were coated with aluminum and gallium using a solution method with two-stage surface modification to obtain a Mn-based powder with an Al–Ga surface modification layer (MAG). It was found that the MAG powders have a higher capacity and excellent cycle characteristics at 55 °C at various current rates, and that the Al–Ga coating layer inhibits the precipitation...
The present study used the Pechini process with a heat treatment to synthesize LiMn 2 O 4 powder (LMO). After surface coating, a nano-sized oxidative film of Li–Ni–Mn formed on the surface of the LMO–Ni powders. The concentration of Mn 3+ for the LMO–Ni powder was lower and the average electrovalence of Mn exceeded the theoretical value, resulting in the initial capacity of...
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