Integration of FeOOH and Zeolitic Imidazolate Framework‐Derived Nanoporous Carbon as an Efficient Electrocatalyst for Water Oxidation,Advanced Energy Materials

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Integration of FeOOH and Zeolitic Imidazolate Framework‐Derived Nanoporous Carbon as an Efficient Electrocatalyst for Water Oxidation
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2018-01-02 , DOI: 10.1002/aenm.201702598
Fei Li ₁ , Jian Du ₁ , Xiaona Li ₂ , Junyu Shen ₁ , Yong Wang ₁ , Yong Zhu ₁ , Licheng Sun _{1,

3}

Affiliation

As a cost‐effective catalyst for the oxygen evolution reaction (OER), the potential use of FeOOH is hindered by its intrinsic poor electron conductivity. Here, the significant enhancement of OER activity and long‐term stability of electrodeposited FeOOH on zeolitic imidazolate framework‐derived N‐doped porous carbons (NPCs) are reported. In alkaline media, FeOOH/NPC supported on nickel foam as a 3D electrode delivers a current density of 100 mA cm⁻² at a small overpotential of 230 mV and exhibits a low Tafel slope of 33.8 mV dec⁻¹ as well as excellent durability, making it one of the most active OER catalysts. Such high performance is attributed to a combined effect of the excellent electron conductivity of NPC and the synergy between FeOOH and NiO derived from Ni substrate.

中文翻译：

FeOOH和沸石咪唑酸酯骨架衍生的纳米多孔碳的集成作为水氧化的高效电催化剂

作为氧气释放反应（OER）的经济高效的催化剂，FeOOH的潜在使用因其固有的较差的电子传导性而受到阻碍。在此，据报道，在沸石咪唑酸酯骨架衍生的N掺杂多孔碳（NPC）上，电沉积FeOOH的OER活性和长期稳定性得到了显着提高。在碱性介质中，作为3D电极支撑在泡沫镍上的FeOOH / NPC在230 mV的小过电位下可提供100 mA cm ^-2的电流密度，并具有33.8 mV dec ^-1的低Tafel斜率以及出色的耐久性，使其成为最具活性的OER催化剂之一。如此高的性能归因于NPC优异的电子电导率以及源自Ni基体的FeOOH和NiO之间的协同作用。

更新日期：2018-01-02

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