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种子诱导的Ni-MOF衍生的Ni/NiO异质纳米片的方向增长,用于高效的进化反应

Liangbin Xia¹, Qing Wang², Fang Wang²

¹State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China.

ACS applied materials & interfaces

|December 30, 2025

概括

这项研究引入了一种新-氧化物框架 (Ni-MOF) 催化剂,在泡上合成,以实现高效的演化反应 (HER). 催化剂表现出卓越的活性和耐用性,性能优于商业色催化剂.

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:

基于的催化剂显示了演化反应 (HER) 的潜力.
同时实现高活性和长期耐用性仍然是一个挑战.
现有的催化剂经常遭受脱离和低于最佳的动力学.

研究的目的:

开发一种高度活跃和耐用的基催化剂,用于HER.
研究一种针对合成泡上的Ni-MOF纳米板的定向自我生长战略.
了解异构结构和界面水在催化性能中的作用.

主要方法:

通过酸蚀刻和带引入,在泡 (NF) 上对Ni-MOF纳米片进行定向的自我生长合成.
热解以形成Ni/NiO异构.
在现场进行拉曼光谱和密度功能理论 (DFT) 计算,以研究反应中间体和机制.
对HER活性和长期稳定性的电化学测试.

主要成果:

合成的S-Ni-MOF/NF-400催化剂在10 mA cm-2.2时表现出20 mV的超低超电位.
Ni/NiO异构为HER中间体提供了优化的吸附/脱附动力学.
与商业Pt/C催化剂相比,催化剂的耐用性更强.
在现场Raman和DFT研究证实了界面水的机制和作用.

结论:

导向自我增长策略成功地产生了基于Ni-MOF的高度活跃和稳定的HER催化剂.
/异构和强大的基板粘合是提高性能和耐久性的关键.
这项工作为设计用于生产的先进电催化剂提供了有前途的方法.

关键词:

基催化剂是基于的催化剂.不同结构异构结构.气演化反应反应的反应接口水是水的接口.金属-有机的框架.

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