MoO 2 nanosheets embedded in amorphous carbon matrix for sodium-ion batteries.

MoO2 nanosheets embedded in the amorphous carbon matrix (MoO2 /C) are successfully synthesized via a facile hydrothermal method and investigated as an anode for sodium-ion batteries. Because of the efficient ion transport channels and good volume change accommodation, MoO2 /C delivers a discharge/charge capacity of 367.8/367.0 mAh g-1 with high coulombic efficiency (99.4%) after 100 cycles at a current density of 50 mA g-1 .