Black phosphorus (BP) has gained great interest due to its tunable band-gap structure which strongly depends on the number of layers. The key step therefore towards application of BP is the preparation of few-layer or multilayer BP materials. However, because of the high chemical reactivity of BP, the preparation process must be handled with special care to avoid oxidation-induced degradation. Here we introduced a facile and scalable electrochemical method to generate BP nanosheets where BP served as the cathode. Subsequently, the product was characterized by TEM, Raman, UV–Vis, AFM, XPS and FTIR techniques. The relevant characterization data indicated that the thickness of the obtained BP nanosheets was mainly in the range of 2–7 nm. Furthermore, oxidation can be completely avoided during this electrochemical cathode exfoliation process, which provided high-quality BP nanosheets.

黑磷（BP）由于其可调节的带隙结构而受到了极大的关注，该结构在很大程度上取决于层数。因此，应用BP的关键步骤是制备多层或多层BP材料。但是，由于BP的高化学反应性，必须特别小心地进行制备过程，以避免氧化引起的降解。在这里，我们介绍了一种简便且可扩展的电化学方法来生成BP纳米片，其中BP用作阴极。随后，通过TEM，拉曼，UV-Vis，AFM，XPS和FTIR技术对产品进行了表征。相关的表征数据表明，所获得的BP纳米片的厚度主要在2-7 nm范围内。此外，在这种电化学阴极剥落过程中可以完全避免氧化，