Enhancing electrocatalytic activity and stability of hydrogen evolution reaction via Mo2C-Ru dual active site catalyst with graphene interface engineering

被引：1

作者：

Lin, Changcheng ^{[1
]}

Tang, Huaibao ^{[2
]}

Xu, Jun ^{[3
]}

Zhang, Qi ^{[1
]}

Chen, Dongmeng ^{[4
]}

Zuo, Xueqin ^{[2
]}

Yang, Qun ^{[2
]}

Li, Guang ^{[1
,5
]}

机构：

[1] Anhui Univ, Sch Mat Sci & Engn, Hefei 230601, Peoples R China

[2] Anhui Univ, Sch Phys & Optoelect, Hefei 230601, Peoples R China

[3] ABA Chem Shanghai Ltd, Shanghai 200063, Peoples R China

[4] China Univ Petr, Coll Sci, Qingdao 266580, Peoples R China

[5] Anhui Univ, Anhui Key Lab Informat Mat & Devices, Hefei 230601, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2025年 / 690卷

基金：

中国国家自然科学基金;

关键词：

Dual active sites; Interface engineering strategies; Hierarchical design; Hydrogen evolution reaction; Mo 2 C-Ru@RGO; MOLYBDENUM CARBIDE; EFFICIENT;

D O I：

10.1016/j.apsusc.2025.162575

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Overcoming the trade-off between activity and stability in catalysts for the hydrogen evolution reaction (HER) poses a significant challenge in the advancement of hydrogen energy. Dual active site catalysts have garnered attention for their tunable interfacial electronic structures. In this study, we initially synthesized beta-Mo2C nanoparticles and subsequently prepared Mo2C-Ru dual active site catalysts by incorporating a small amount of Ru. We then employed interface engineering techniques to integrate graphene as a rapid electron transport channel and protective layer, resulting in the creation of Mo2C-Ru@RGO. This catalyst demonstrated an impressively low overpotential of just 16 mV in alkaline seawater at a current density of 10 mA cm-2. Moreover, its electrochemical performance in both alkaline solutions and simulated seawater outperformed that of commercial Pt-C by 20%. By combining in situ Raman spectroscopy with computational analysis, we identified that the synergistic effect of the dual active sites effectively mitigated the shared defect inherent in the Ru-Mo2C system, specifically addressing the strong metal-hydrogen binding energy barrier. Additionally, the interfacial interaction between Mo2C-Ru and graphene-enhanced the effective transfer of electrons. This study underscores the potential for developing composite electrocatalysts through multi-level interface design, offering a promising solution for the sustainable advancement of hydrogen energy.

引用

页数：10