Abstract:

Nano-black phosphorus has excellent performance such as layer-dependent direct band gap,high carrier mobility,etc.,so it has broad application prospects in energy storage,catalysis.However,the premise of nano-black phosphorus applica-tion lies in its efficient preparation.In many methods of preparing nano-black phosphorus,the electrochemical exfoliation is usually carried out under mild reaction conditions,with simple operation,high efficiency and strong controllability.It is the most likely method for achieving low-cost and large-scale controllable preparation of nano-black phosphorus at present.Accord-ing to the position of raw material black phosphorus in the exfoliation process,the electrochemical exfoliation can be divided into anode exfoliation,cathode exfoliation and electrolyte exfoliation.In order to systematically understand the research status and development prospect of the preparation of nano-black phosphorus by electrochemical exfoliation,the research progress of three different electrochemical exfoliation ways to prepare nano-black phosphorus were reviewed,the advantages and dis-advantages of the three ways and the corresponding mechanism were analyzed.Finally,the future of electrochemical exfolia-tion of black phosphorus was prospected.It was suggested that cathode exfoliation would be a relatively optimal electrochemi-cal exfoliation way for the efficient preparation of nano-black phosphorus due to its rich species and small oxygen defect.

Key words: black phosphorus, nano-black phosphorus, electrochemical exfoliation