Transition Metal/Metal Sulfide Heterostructures Boost Energy Saving Hydrogen Production Coupled with Sulfion Degradation

作者：Yichen Feng, Min Zhou, Guo Yu, Jianfeng Zhang, Lianmeng Cui, Xiaobin Liao, Wei Liu, Ping Luo, Yan Zhao, Zhaoyang Wang · 发表于：Chemistry - A European Journal · 年份：2025 · DOI：10.1002/chem.202501053 · 被引用次数：6 · 研究领域：Electrocatalysts for Energy Conversion、Advanced Photocatalysis Techniques、Advanced battery technologies research

Abstract Hydrogen production through the electrochemical hydrogen evolution reaction (HER) provides a promising pathway for sustainable and green energy. Coupling HER with the thermodynamically favorable sulfion oxidation reaction (SOR) can reduce energy consumption and recycle industrial by‐product S 2− . However, the development and practical application are hindered by the lack of cost‐effective and robust catalysts. Herein, we constructed a bifunctional electrode with rich metal/metal sulfide heterostructures using NiFe foam through stepwise electrodeposition and hydrothermal sulfurization (NiFe‐CrCoMo‐S). Benefiting from the hydrophilic and sulfur‐repellent surface and rich metal/metal sulfide heterostructures, it delivers outstanding SOR and HER performance. The integrated cell, utilizing the NiFe‐CrCoMo‐S electrode for both the cathode and anode, achieves a remarkable cell voltage of 0.75 V at a current density of 200 mA cm −2 , which is 1.43 V lower than conventional water electrolysis. It demonstrates extraordinary long‐term durability over 1100 hours without significant decay, achieving high Faradaic efficiencies (≥99%) and low electricity consumption (1.79 kWh m −3 H 2 ) for hydrogen production. This work paves the way for environmentally friendly strategies, combining cost‐effective hydrogen production with value‐added sulfur recovery, offering a reliable option for bifunctional catalyst design.