磷化物
电催化剂
催化作用
钼
碳纤维
化学工程
材料科学
吸附
氢
电解
无机化学
纳米技术
化学
电极
电化学
物理化学
有机化学
复合材料
工程类
复合数
电解质
作者
Riyue Ge,Juanjuan Huo,Ting Liao,Yang Liu,Mingyuan Zhu,Ying Li,Jiujun Zhang,Wenxian Li
标识
DOI:10.1016/j.apcatb.2019.118196
摘要
In the effort to develope more effective electrocataysts for water electrolysis hydrogen generation through hydrogen evolution reaction (HER), the well-crystallized molybdenum phosphide nanoparticles dispersed in three-dimensional N,P-codoped graphite carbon nanosheets (3D MoP/NPG) are synthesized in this work using a SiO2-template-assisted strategy. Instrument characterization shows that the catalyst has a large specific surface area, high electrical conductivity, and the coupled interfaces & synergistic effect between MoP and carbon sheets toward electrocatalytic HER. Experimental results reveal that MoP/NPG possesses remarkable catalytic HER activity and stability in a wide pH range. Density functional theory (DFT) calculations reveal that the coupled interaction between MoP and carbon sheet interfaces can induce an optimal free energy of hydrogen adsorption on the catalyst surface. Both the theoretical calculations and experimental results demonstrate that the hierarchical structure with synergistic interaction between MoP and carbon sheets can facilitate charge transfer kinetics to enhance HER performance.
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