Activating the few-layer and short-range order 1T-MoS2 via interface engineering for efficient alkaline hydrogen evolution

作者：Nan Zhang, Xichen Yang, Qunyue Pei, Menglin Gao, Xingqi Liu, Rui‐Xuan Tang, Pengfei Wang, Xi Liu, Xiaocan Zhang, Jian Liu · 发表于：International Journal of Hydrogen Energy · 年份：2025 · DOI：10.1016/j.ijhydene.2025.152893 · 被引用次数：2 · 研究领域：2D Materials and Applications、Electrocatalysts for Energy Conversion、Advanced Memory and Neural Computing

1T-MoS 2 is a promising electrocatalyst for hydrogen evolution reaction (HER) due to its high conductivity and abundant active sites. However, its practical application is hindered by the difficulty in synthesizing high-purity 1T phase, the suboptimal activity of its basal plane, and sluggish alkaline HER kinetics. Herein, few-layer MoS 2 nanosheets with a short-range ordered structure and a 92 % 1T-phase content were grown on carbon cloth (CC) via a simple process. This unique substrate enabled the dense deposition of ultrasmall Ni(OH) 2 nanoparticles, creating numerous heterostructure coupling boundaries. Within this configuration, the Ni(OH) 2 nanoparticles not only efficiently accelerate the Volmer step but also electronically activate the adjacent 1T-MoS 2 basal plane. Furthermore, the heterostructure preserves a high content of the metallic 1T phase (∼90 %) and its advantageous nanostructure, which collectively ensure efficient electron transfer, sufficient electrolyte diffusion, and copious active site exposure. Benefiting from these advantages, the Ni(OH) 2 /1T-MoS 2 /CC electrode requires an overpotential of only 216 mV to deliver 250 mA cm −2 . Remarkably, its performance surpasses that of Pt/C at current densities above 179 mA cm −2 . The electrode also exhibits superior stability to that of Pt/C, aided by its hydrophilicity and aerophobicity. The outstanding HER activity and stability of Ni(OH) 2 /1T-MoS 2 /CC demonstrate its potential for industrial application.