Boosted hydrogen evolution from α-MoC1-x-MoP/C heterostructures. (20th February 2020)

• Record Type: Journal Article
• Authors: Liu, Tianying; Zhang, Xiangyong; Guo, Ting; Wu, Zhuangzhi; Wang, Dezhi
• Is Part Of: Electrochimica acta. Volume 334(2020)
• Publication Date: 2020-02-20
• Subjects: Hydrogen evolution reaction -- Alpha-molybdenum carbide -- Molybdenum phosphide -- Heterostructure -- Electronic interaction; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2020.135624
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: To explore highly effective catalysts with low cost and earth abundant for the hydrogen evolution reaction (HER), in this work, a novel electrocatalyst of alpha-molybdenum carbide and molybdenum phosphide heterostructure embedded in N-doped carbon (α-MoC1-x -MoP/C) is synthesized via facile simultaneous carbonization and phosphorization strategy for the first time, which exhibits an excellent hydrogen evolution activity with a Tafel slope of 57 mV dec −1 in an acidic media. A strong electronic interaction between α-MoC1-x and MoP in the interfaces is verified experimentally and theoretically, which contributes to a mild free energy of H adsorption and smaller charge transfer resistance, resulting in an improved HER activity.