▎ 摘　　要

A ZnSe-graphene nanocomposites was prepared using by a facile hydrothermal method followed fabrication serials film counterelectrode (CEs) by the doctor-blade method. Transmission electron microscopy (TEM) results show that ZnSe nanoparticles are uniformly implanted on the graphene film. The improved performance compared to the pristine ZnSe is attributed to the increased number of active catalytic sites of ZnSe/rGO and highly conducting path of graphene. The comprehensive ZnSe/rGO synthesis process is a simple and scalable process which can easily adapt for large scale electro-catalytic film fabrication for several other electro-chemical energy harvesting and storage applications.