A Fractal-Tip Cu 3 Ni/NiMoO 4 Heterostructure for Efficient Hydrogen Evolution via an Accelerated Volmer–Tafel Mechanism

作者：Mingzhe Li, Y Chen, Xiaofen Wang, Jiahui Zheng, Kepi Chen, Haizhen Xian, Yuzhen Lv, Wei Zhou · 发表于：ACS Nano · 年份：2025 · DOI：10.1021/acsnano.5c11278 · 被引用次数：19 · 研究领域：Electrocatalysts for Energy Conversion、Copper-based nanomaterials and applications、Catalytic Processes in Materials Science

, promoting water dissociation (H*-*OH). Experimental results and theoretical calculations reveal that the interface lowers the energy barrier for water dissociation and increases H* coverage, shifting the reaction mechanism from the Volmer-Heyrovsky pathway to the more efficient Volmer-Tafel route. Furthermore, the fractal-tip structure boosts HER kinetics by amplifying local electric fields, concentrating protons, and accelerating bubble release. This work provides a rational design strategy for improving hydrogen evolution kinetics through combined structural and interfacial optimization.