Two-dimensional (2D) transition metal dichalcogenides (TMDs), an emerging class of materials that can be used as semiconductors and insulators, have promising potential in various applications due to their unique properties. But the reliable production of these atomically thin 2D materials has been challenging. A research team led by a material scientist from City University of Hong Kong (CityU) has developed an efficient electrochemical exfoliation method to achieve high-yield production of TMD nanosheets. This new strategy lays a new direction for mass production of TMD nanosheets for wide application in future.