3D Self-Supported FeOOH@C Hybrid Nanosheet Arrays as Electrocatalyst for Oxygen Evolution

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Nano Materials Pub Date : 2025-06-03 DOI:10.1021/acsanm.5c0188210.1021/acsanm.5c01882

Shuiqiang Chen, Fang Su, Yong Gao, Zheng Li and Hua Li*,

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引用次数: 0

Abstract

FeOOH has attracted great research attention in the electrocatalytic oxygen evolution reaction (OER) because of its low cost, natural abundance, environmental friendliness, and high intrinsic activity. However, the practical utilization of FeOOH is seriously restricted by its inherent poor conductivity. Herein, the hybridization of FeOOH with N-doped porous carbon (NPC) nanosheets derived from metal–organic framework (MOF) supported on Ni foam (NF) has been proved to be an effective approach to improve the electrocatalytic OER activity of FeOOH. The MOF-derived porous NPC nanosheets have a unique interpenetrating three-dimensional (3D) network architecture, which can not only serve as a highly conductive layer to promote electron transfer but also improve the utilization rate of FeOOH and facilitate mass transport. Owing to the advantages in structure and composition, the as-obtained FeOOH@C/NF exhibits significantly enhanced electrocatalytic performance toward OER in alkaline media, with a current density of 10 mA cm^–2 at an overpotential of 182 mV, a small Tafel slope of 27.9 mV dec^–1, and excellent durability.

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三维自支撑FeOOH@C混合纳米片阵列作为析氧电催化剂

FeOOH因其成本低、天然丰度高、环境友好、固有活性高等特点，在电催化析氧反应（OER）中受到广泛关注。然而，FeOOH固有的导电性差严重制约了其实际应用。本文中，FeOOH与Ni泡沫（NF）支撑的金属有机骨架（MOF）衍生的n掺杂多孔碳（NPC）纳米片的杂化被证明是提高FeOOH电催化OER活性的有效方法。mof衍生的多孔NPC纳米片具有独特的互穿三维（3D）网络结构，不仅可以作为高导电层促进电子转移，还可以提高FeOOH的利用率，促进质量传递。由于结构和组成上的优势，FeOOH@C/NF在碱性介质中对OER的电催化性能显著增强，电流密度为10 mA cm-2，过电位为182 mV， Tafel斜率小，为27.9 mV / dec1，耐久性好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Nano Materials Multiple-

CiteScore

8.30

自引率

3.40%

发文量

1601

期刊介绍： ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.