用于海水中高效析氧的镍钴双金属分级中空纳米片

An Rongzheng, Li Guoling, Liu Zhiliang

Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.

College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.

Materials (Basel). 2024 May 13;17(10):2298. doi: 10.3390/ma17102298.

The electrochemical splitting of seawater is promising but also challenging for sustainable hydrogen gas production. Herein, ZIF-67 nanosheets are grown on nickel foam and then etched by Ni in situ to obtain a hierarchical hollow nanosheets structure, which demonstrates outstanding OER performance in alkaline seawater (355 mV at 100 mA cm). Diven by a silicon solar panel, an overall electrolysis energy efficiency of 62% is achieved at a high current of 100 mA cm in seawater electrolytes. This work provides a new design route for improving the catalytic activity of metal organic framework materials.

海水的电化学分解对于可持续制氢而言前景广阔但也颇具挑战。在此，ZIF-67纳米片生长在泡沫镍上，然后被镍原位蚀刻以获得分级中空纳米片结构，该结构在碱性海水中展现出出色的析氧反应性能（在100 mA cm²时为355 mV）。在硅太阳能电池板的驱动下，在海水电解质中100 mA cm²的高电流下实现了62%的整体电解能量效率。这项工作为提高金属有机骨架材料的催化活性提供了一条新的设计途径。