Ordered Macroporous Nickel Electrode for High-Current-Density Hydrogen Production

作者：Ziyao Chen, Huai Qin Fu, Yiwei Sun, Mingli Li, Mengyang Dong, Yu Zou, Mengqing Hu, Kaidi Zhang, Yun Wang, Porun Liu, Huijun Zhao · 发表于：Energy & Fuels · 年份：2025 · DOI：10.1021/acs.energyfuels.5c02729 · 被引用次数：4 · 研究领域：Electrocatalysts for Energy Conversion、Catalytic Processes in Materials Science、Fuel Cells and Related Materials

In pursuit of sustainable hydrogen production, the development of efficient and stable electrocatalysts for the hydrogen evolution reaction (HER) under industrial conditions remains a critical challenge. Herein, a free-standing, highly active, and stable inverse-opal-structured nickel foam (IOS Ni@NF) electrode was fabricated via a hard-template-assisted pulsed electrodeposition. This novel architecture features a highly ordered three-dimensional macroporous network, providing an abundance of electrochemically active sites, facilitating rapid mass transfer, and ensuring efficient hydrogen bubble detachment. This IOS Ni@NF electrode exhibits remarkable HER activity in 1 M KOH, achieving overpotentials of merely 73 and 260 mV at current densities of 10 and 500 mA cm –2, respectively. Furthermore, the electrode exhibits excellent long-term stability, lasting over 20 h at a current density of 1000 mA cm –2 . These findings underscore the potential of IOS Ni@NF as a promising electrode for large-scale alkaline water electrolysis.