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Updated: Sep 19, 2025

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

构建Co-Fe层状双氧化物和Ni-Fe金属有机框架之间的异质连接接口作为高效的氧化演变电催化剂:对CoOOH-FeOOH-NiOOH三元系统的机制洞察

Kuo Yang¹, Wenjie Ren¹, Luowei Li¹

¹School of Chemical Science and Technology, National Demonstration Center for Experimental Chemistry and Chemical Engineering Education, Yunnan University, 2 North Cuihu Road, 650091 Kunming, China.

Journal of colloid and interface science

|May 31, 2025

概括

这项研究提出了一种新的,具有成本效益的铁层双氧化物 (CoFe-LDH) 和铁金属有机框架 (NiFe-MOF) 电催化剂,用于氧化演化反应 (OER). 与商业二氧化相比,催化剂显示出更高的活性和耐用性.

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:

开发高效且负担得起的非贵金属电催化剂对于氧气进化至关重要.
氧进化反应 (OER) 是水分裂和能量转化中的一个关键过程.

研究的目的:

设计和合成一个新的CoFe-LDH和NiFe-MOF电催化剂,支持泡 (NF) 用于OER.
调查催化剂中的协同效应和电子相互作用,以提高OER性能.

主要方法:

一个层次化的CoFe-LDH@NiFe-MOF/NF电催化剂的制造.
使用各种技术进行表征,以确认结构和组成.
对OER活性和耐久性的电化学测试.
密度功能理论 (DFT) 计算以阐明反应机制.

主要成果:

CoFe-LDH@NiFe-MOF/NF催化剂在10 mA cm−2时表现出225 mV的低超电位,以及28.10 mV dec−1.1的Tafel斜率.
证实了Co,Ni和Fe活性位点 (Co2+/3+,Ni2+/3+,Fe2+/3+) 之间的协同相互作用.
与商业RuO2.2相比,催化剂显示出更高的OER活性和稳定性.
DFT计算支持性介质中增强的电子转移和协同效应.

结论:

CoFe-LDH@NiFe-MOF/NF催化剂为氧气演变提供了一个有前途,具有成本效益和持久的解决方案.
层次的多孔结构和调制的电子相互作用有助于高催化性能.
这项工作为开发用于氧化水的先进电催化剂提供了实际策略.

关键词:

在 CoFe-LDH@NiFe-MOF 中使用.库 (CooooH) 是一个古老的语言.在 DFT 方面,它是最重要的.这是一个FeOOH FeOOH.尼奥尼奥尼奥尼奥尼奥尼奥尼奥这是OER OER.

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