Song, Laizhou, Wang, Xiuli, Wen, Fusheng, Niu, Lijing, Shi, Xuanming, and Yan, Jiayun
The low phosphorus (LP), medium phosphorus (MP), and high phosphorus (HP) three nickel–phosphorus (Ni P) powders were employed as supports of molybdenum disulfide (MoS 2 ) to fabricate MoS 2 /Ni P composites (MoS 2 /Ni–LP, MoS 2 /Ni–MP, and MoS 2 /Ni–HP) via a hydrothermal technique. Crystal structures, morphologies, components and hydrogen evolution reaction (HER) performances of them were characterized and evaluated. During the incorporation between MoS 2 and Ni P, the crystallization of Ni P powders and the presence of metastable nickel phosphides can be validated; also, the 2H-MoS 2 tends to transfer to the phase of 1T-MoS 2 . Compared with MoS 2 and Ni P samples, MoS 2 /Ni P composites show a higher HER property. Prominent HER behaviors of the composites can be due to the presence of monolayer 1T-MoS 2 on the surface, the excellent conductivity of Ni P powder at the bottom, as well as the coexistence of nickel phosphides. Among the three composites, MoS 2 /Ni–MP exhibits the remarkably electrocatalytic activity. [ABSTRACT FROM AUTHOR]