▎ 摘　　要

MXenes have received intensive attraction as new anode materials for alkaline-ion batteries because of their exceptional physical and chemical characteristics. Nevertheless, the extremely low packing density hinders their practical application. Herein, we report highly dense Ti3C2Tx MXene monoliths with hierarchical porous structure involving a graphene-assisted hydrothermal method followed by capillary evaporation. The packing density is as high as 1.67 g cm(-3), which is 107 times larger than that of MXene aerogel. Owing to the efficient electron and ion transport pathways as well as high packing density, the MXene monoliths exhibit high gravimetric capacity (372 mAh g(-1)), volumetric capacity (621 mAh cm(-3)), and outstanding cycling stability when tested against Li. For anode of sodium-ion battery, the as-obtained Ti3C2Tx monoliths achieve a volumetric capacity of 270 mAh cm(-3). Meanwhile, a charge capacity of 167 mAh cm(-3) at 0.5 A g(-1) can be retained after 2000 cycles with a capacity retention of 96.5 %. This strategy is effective for preparation of high volumetric MXenes-based anode materials for compact energy storage applications.