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Novel double‐shelled CoMn₂O₄ hollow microcubes with nanometer‐sized building blocks have been prepared by a facile co‐precipitation and annealing method. In virtue of the unique structural features, the resultant CoMn₂O₄ hollow structures exhibit high specific capacity (∼830 mA h g⁻¹ at 200 mA g⁻¹) and good cycling performance as an anode material for lithium‐ion batteries.