Tiny MoO₃ nanocrystals self-assembled on folded molybdenum disulfide nanosheets via a hydrothermal method for supercapacitor

Coupling of two active semiconductors can easily lead to a deterioration of their intrinsic properties. In this work, tiny MoO₃ nanocrystals were deposited on 3D MoS₂ frameworks via a hydrothermal reaction, with heterostructures forming by oxygen-bonding interactions at their interface. When tested as a supercapacitor electrode, the MoS₂/MoO₃ heterostructure exhibited a high specific capacitance of 287.7 F g⁻¹ at a current density of 1 A g⁻¹, and a remarkable cycling stability after 1000 cycles at 1 A g⁻¹ in an aqueous solution compared to pristine MoS₂. The results thus reveal the superior properties of the MoS₂/MoO₃ heterostructure for supercapacitor electrode.

We successfully synthesized tiny MoO₃ nanocrystals deposited on 3D MoS₂ frameworks via a self-assembly. The MoS₂/MoO₃ heterostructure exhibited a high specific capacitance and cycling stability compared to pristine MoS₂.