通过接口工程稳定 (Ni,Fe) OOH活性阶段,在pH中性介质下实现高效的氧气演化反应
Qian Lin1, Degao Zhang1, Guangjun Nan2
1Institute for Science and Applications of Molecular Ferroelectrics, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, P. R. China.
The journal of physical chemistry letters
|November 19, 2025
概括
工程 (Ni,Fe) OOH/2D异构结构增强氧演化反应 (OER) 活动和稳定性在更广泛的pH范围. 与传统方法相比,这种接口工程优化了电子性能,以获得优越的催化性能.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 从分层双氧化物 (LDH) 衍生出的铁氧化 (Ni,Fe) OOH 在性介质中显示出高氧化演化反应 (OER) 活性.
- 然而,它们的稳定性在腐蚀性电解质中是有限的,阻碍了实际应用.
研究的目的:
- 设计新的 (Ni,Fe) OOH/2D异构结构,以提高开放式电路的活性和稳定性.
- 调查接口工程对OER催化剂电子结构和催化性能的影响.
主要方法:
- 通过接口工程将活性 (Ni,Fe) OOH与二维材料 (石墨烯,g-C3N4) 集成.
- 计算模拟 (例如,贝德电荷分析) 以了解电子结构和反应机制.
- 在中性至性条件下对OER性能进行评估.
主要成果:
- 与NiFe-LDHs和 (Ni, Fe) OOH. 2D相比, (Ni, Fe) OOH/2D异构体表现出优越的OER活性,具有较低的过电潜力.
- 从2D材料到 (Ni,Fe) OOH的电子转移上调了d波段中心,优化了吸附能量.
- 观察到OER率决定阶段中间产品的绑定减弱,产品的绑定加强.
结论:
- 接口工程 (Ni,Fe)OOH/2D异构结构提供了增强的OER性能和更广泛的pH适应性.
- 异构结构的原子级设计对于开发先进的电催化剂至关重要.
- 这项工作为设计具有更高稳定性的高性能OER催化剂提供了一条途径.
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