Urea-assisted hydrothermal synthesis of a hollow hierarchical LiNi_0.5Mn_1.5O₄ cathode material with tunable morphology characteristics.

SEM observation shows that the average particle size of carbonate precursor exhibits a decreasing trend with the reactant concentration, and the one synthesized at 0.3 mol L −1 has relatively smaller particle size with more homogenous distribution.

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