The invention discloses a preparation method of a
lithium-rich
manganese base with high compaction density, and relates to the technical field of
lithium ion batteries, the method comprises the following steps: firstly, a certain amount of
nickel source,
cobalt source and
manganese source are weighed and dissolved in pure water, and the solution preparation concentration is 2.0 mol / L; 2, adding 5-20g of
titanium citrate into the solution prepared in the step 1, and mixing; the operation in the step 2 is repeated, the same solution is prepared, the addition amount of the
titanium citrate needs to be controlled, and the difference between the addition amount of the
titanium citrate and the addition amount of the
titanium citrate is about 10 g. The preparation method comprises the following steps: firstly, preparing a
manganese-based material precursor by adopting a
liquid phase method, in the precursor preparation process, adding
citric acid titanium with different concentrations to prepare precursors with different
doping concentrations, subsequently uniformly mixing the two precursors, subsequently supplementing a
lithium source, and performing high-temperature
solid-phase
sintering to obtain the lithium-rich manganese-based material with high compaction density and
high rate performance.