• 文献标题:   FeNi@N-Doped Graphene Core-Shell Nanoparticles on Carbon Matrix Coupled with MoS2 Nanosheets as a Competent Electrocatalyst for Efficient Hydrogen Evolution Reaction
  • 文献类型:   Article
  • 作  者:   SHAH SA, XU L, SAYYAR R, KHAN I, YUAN AH, SHEN XP, LI XH, ULLAH H
  • 作者关键词:   density functional theory, electrocatalyst, hydrogen evolution reaction, molybdenum disulfide, ndoped carbon encapsulated metal particle
  • 出版物名称:   ADVANCED MATERIALS INTERFACES
  • ISSN:   2196-7350
  • 通讯作者地址:  
  • 被引频次:   5
  • DOI:   10.1002/admi.202201040 EA JUL 2022
  • 出版年:   2022

▎ 摘  要

Synthesis of noble-metal-free electrocatalysts for green hydrogen production is crucial to overcoming the energy demand of modern society. One of the most competitive and alternative noble-metal-free electrocatalysts for hydrogen evolution reaction (HER) is molybdenum disulfide (MoS2)-based composites. Herein, it is shown that MoS2 nanosheets grow on FeNi@N-doped graphene nanoparticles/N-doped carbon matrix (FeNi@NG/NCM@MoS2), using the hydrothermal method. FeNi@NG/NCM@MoS2 hybrid displays outstanding HER performance with a low overpotential of 79 mV at 10 mA cm(-2), a small Tafel slope of 40.2 mV dec(-1), and high durability. First-principles density functional theory simulations confirm the electron transformation from FeNi alloy to NG surface of FeNi@NG particle and subsequently further transfer to MoS2 nanosheets, which decrease the Gibbs free energy (Delta G(H)* approximate to -0.08 eV) and local work function for enhanced HER activities. This work highlights the understanding of electron transfer in demonstrating the kinetic reaction of the HER process and offers a new avenue for constructing efficient MoS2-based electrocatalysts.