Interconnected MoS2/FeCo2S4 nanosheet array bifunctional electrocatalysts grown on carbon cloth for efficient overall water splitting

Seeking and designing low-cost and efficient bifunctional electrocatalysts to replace the traditional Pt and IrO2 catalysts is significant for the development of overall water splitting. Herein, the precursor of Mo intercalation into the CoFe-LDH interlayer is prepared by a simple hydrothermal method, and then the cross-linked MoS2/FeCo2S4 nanosheet arrays are deposited on high conductivity carbon cloth by further hydrothermal vulcanization. The prepared MoS2/FeCo2S4/CC catalyst served as a bifunctional electrocatalyst for overall water splitting presenting an excellent electrocatalytic performance with an overpotential of 161 mV for the HER at 10 mA cm(-2), and 307 mV for the OER at 50 mA cm(-2). The excellent electrochemical performance is attributed to the reasonable design and selection of composite catalysts and the unique morphology of the interconnected nanosheets.