| Abstract Scope |
Hydrogen energy stands as a leading renewable energy source for the 21st century, with water electrolysis offering a green pathway to hydrogen production. Despite this, the high costs, low efficiency, and substantial power consumption associated with water electrolysis catalysts have hindered widespread adoption. Addressing the trade-off between catalyst activity and stability, this paper focuses on developing cost-effective, highly active, and stable alkaline water electrolysis catalysts. By leveraging disordered alloy precursors, including amorphous and high-entropy alloys, we systematically explore pore structure regulation and performance optimization. Specifically, we develop FeCoNi high-entropy alloy electrodes with a multi-stage porous structure, featuring both nanoporous and micron pores, derived from a Cu high-entropy alloy precursor. These electrodes exhibit superior water electrolysis performance in alkaline media, with enhanced catalytic activity and stability, thus paving the way for the industrial application of high-entropy alloys in the hydrogen energy sector. |