Formation of NiFe-MOF nanosheets on Fe foam to achieve advanced electrocatalytic oxygen evolution,Dalton Transactions

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Formation of NiFe-MOF nanosheets on Fe foam to achieve advanced electrocatalytic oxygen evolution
Dalton Transactions ( IF 3.5 ) Pub Date : 2022-03-03 , DOI: 10.1039/d2dt00127f
Yutong Jia _{1,

2} , Zhikun Xu ₃ , Lin Li ₁ , Shuangyan Lin ₂

Affiliation

2D bimetal metal organic frameworks (MOFs) are recognized as one of the most promising electrocatalysts for the oxygen evolution reaction (OER). Herein, a facile approach was proposed to construct NiFe-MOF nanosheets on Fe foam (FF). As a self-supporting electrode, the NiFe-MOF/FF electrode shows impressive electrocatalytic OER performance. Specifically, it exhibits an ultra-low overpotential of 216 mV to reach a current density of 50 mA cm⁻², and outstanding stability (beyond 50 h at 200 mA cm⁻²). The excellent performances of NiFe-MOF/FF arise from the highly exposed active centers, the excellent conductivity, and the synergy effect between Ni and Fe. This research provides a promising strategy for the synthesis of multi-metal MOFs as high-efficiency electrocatalysts.

中文翻译：

在 Fe 泡沫上形成 NiFe-MOF 纳米片以实现先进的电催化析氧

二维双金属金属有机框架（MOFs）被认为是最有前途的析氧反应（OER）电催化剂之一。在此，提出了一种在 Fe 泡沫 (FF) 上构建 NiFe-MOF 纳米片的简便方法。作为一种自支撑电极，NiFe-MOF/FF 电极显示出令人印象深刻的电催化 OER 性能。具体来说，它表现出 216 mV 的超低过电位，达到 50 mA cm ^-2的电流密度，以及出色的稳定性（在 200 mA cm ^-2下超过 50 小时）。NiFe-MOF/FF的优异性能源于高度暴露的活性中心、优异的导电性以及Ni和Fe之间的协同效应。该研究为合成多金属MOFs作为高效电催化剂提供了一种有前景的策略。

更新日期：2022-03-03

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