Interfacial Effects of NiFe-Based Bifunctional Electrocatalysts for Highly Efficient Overall Water Splitting

IF 3.7 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2024-11-22 DOI:10.1021/acs.langmuir.4c04136

Rui Guo, Zhifeng Zhao, Zhanhua Su, Jing Liang, Weili Qu, Xiaofeng Li, Yongchen Shang

引用次数: 0

Abstract

The reasonable design of highly efficient NiFe-based bifunctional electrocatalysts is imperative for water splitting and alleviation of the energy crisis. Herein, the NiFe-based bifunctional electrocatalysts are designed and grown in situ on Ni foam by a simple hydrothermal method. The interfacial effect among NiFe-LDH, Fe₅O₇(OH), and NiFe₂O₄ exposes more catalytic active sites, modulated electronic structure, and optimization of the electrocatalytic performances. The overpotentials of NiFe-LDH/Fe₅O₇(OH)/NiFe₂O₄/NF-15h (NFN/NF-15h) for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are 78 and 208 mV at 10 mA cm^–2, respectively. Overall water splitting can drive 10 mA cm^–2 with a cell voltage of only 1.538 V. This work contributes a feasible idea for the design and synthesis of NiFe-based bifunctional electrocatalysts with outstanding water splitting performance.

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用于高效整体水分离的镍铁基双功能电催化剂的界面效应

合理设计高效的镍芴基双功能电催化剂是水分离和缓解能源危机的当务之急。本文设计了镍铁基双功能电催化剂，并通过简单的水热法在镍泡沫上原位生长。NiFe-LDH 、Fe5O7(OH) 和 NiFe2O4 之间的界面效应暴露了更多的催化活性位点，调节了电子结构，优化了电催化性能。在 10 mA cm-2 条件下，NiFe-LDH/Fe5O7(OH)/NiFe2O4/NF-15h（NFN/NF-15h）在氢进化反应（HER）和氧进化反应（OER）中的过电位分别为 78 mV 和 208 mV。这项工作为设计和合成具有优异水分离性能的镍铁基双功能电催化剂提供了可行的思路。

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

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).