Construction of MoO@MoS heterostructures on carbon cloth for the hydrogen evolution reaction

MoS 2 as one graphene-like 2D layered transition metal sulfide has attracted great attention. However, its application for the HER is still restricted by the poor electrical conductivity and structural restacking. In this work, we developed a facile method to prepare MoO 2 @MoS 2 heterostructures in situ by partial conversion of MoO x into MoS 2 on carbon cloth. Based on the two-time hydrothermal process, the MoS 2 nanosheets can be dispersed and grow on carbon cloth. Excellent electrochemical HER activity of MoO 2 @MoS 2 /CC-2 can be achieved with a low overpotential of 115 mV at 10 mA cm −2 ( η 10 ) in 0.5 M H 2 SO 4 . Furthermore, it still shows durable electrocatalytic stability for 13 h. The outstanding electrocatalytic activity may be ascribed to the synergistic effect between the MoO 2 and MoS 2 heterostructures. MoO 2 @MoS 2 heterostructures in situ grown on carbon cloth were developed for efficient hydrogen evolution reaction.