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溶剂工程和金属兴奋剂的双重效应使形态能够精确控制基于MOF的电催化剂,以实现高效的氧气进化反应

Hongmei Yuan¹, Changyu Weng¹, Weidong Liu¹

¹Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)

|July 7, 2025

概括

为氧化演化反应 (OER) 开发高效的电催化剂是可再生的关键. 本研究介绍了一种新的CoFe-MOF(W) 催化剂,通过双重调节策略实现了卓越的性能.

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:

具有高活性的经济可行的电催化剂对于可再生生成水电解中的氧化演化反应 (OER) 至关重要.
目前面临的挑战在于设计材料,为实际应用提供卓越的性能和稳定性.

研究的目的:

设计和合成一种新的电催化剂,CoFe-MOF(W),用于高效的氧化演化反应 (OER) 催化.
研究溶剂工程和金属兴奋剂对电催化活性和机制的协同效应.

主要方法:

使用涉及溶剂工程和Fe-doping的双调节机制制造一个分层的CoFe-MOF(W) 催化剂.
对OER的电催化性能评估,包括超电位和Tafel斜率测量.
机械学研究涉及表面重建分析和密度功能理论 (DFT) 计算.

主要成果:

CoFe-MOF(W) 催化剂表现出优异的OER性能,在10 mA cm−2时只需要276 mV的超电位,并表现出55 mV dec−1.1的Tafel斜率.
溶剂工程诱导了不和的协调状态,暴露了更多活跃的部位,而Fe-doping则增强了电荷转移和电子结构.
表面重建产生了Co(Fe) OOH作为活性物种,DFT计算证实了为增强动力学而优化*OH吸附.

结论:

这项研究为基于金属有机框架 (MOF) 的电催化剂使用溶剂调制和金属兴奋剂策略提供了新的见解.
开发的CoFe-MOF(W) 催化剂显示出对高效的开放式能源资源和可持续能源系统中的应用具有重大前景.
这项工作为设计用于水电解的先进电催化剂提供了途径.

关键词:

兴奋剂的影响兴奋剂效应金属有机的框架.氧气进化反应反应氧气进化反应溶剂工程,表面重建工程,表面重建工程

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