FeOOH-NiV LDH Heterostructure as Efficient Electrocatalyst for Oxygen Evolution Reaction

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-01-18 DOI:10.1007/s10562-024-04894-6

Shengwang Liu, Shixue Song, Yi Feng

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Abstract

The oxygen evolution reaction (OER) with complex 4-electron transfer is a critical issue limiting the efficiency of electrolytic hydrogen production. Therefore, to develop efficient OER electrocatalysts for water splitting was necessary. Given the abundant unoccupied 3d orbitals of high-valent vanadium ions and the three-dimensional structure of nickel foam substrates, this study successfully fabricate hydroxy-iron oxide (FeOOH) modified nickel vanadium layered double hydroxide (NiV LDH) nanosheets array heterostructure electrocatalysts through surface modification method. By coupling FeOOH with NiV LDH, the electron structure between Fe, Ni, V, and O was finely regulated. Thanks to the strong electronic interactions at the heterostructure interface, the prepared heterostructure electrocatalysts exhibit outstanding electrocatalytic OER performance in 1 M KOH electrolyte. The heterostructure electrocatalyst demonstrated overpotentials of only 212, 252, and 279 mV at current densities of 10, 50, and 100 mA·cm⁻², respectively, and a Tafel slope of only 71.37 mV·dec⁻¹. This study provided a new strategy for developing efficient new OER heterostructure catalysts.

Graphical Abstract

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feoh - niv LDH异质结构作为析氧反应的高效电催化剂

具有复杂4电子转移的析氧反应（OER）是制约电解制氢效率的关键问题。因此，开发高效的OER水裂解电催化剂是必要的。考虑到高价钒离子丰富的未占据三维轨道和泡沫镍基底的三维结构，本研究通过表面修饰方法成功制备了羟基氧化铁（FeOOH）修饰的镍钒层状双氢氧化物（NiV LDH）纳米片阵列异质结构电催化剂。通过FeOOH与NiV LDH的耦合，Fe、Ni、V、O之间的电子结构得到了很好的调控。由于异质结构界面处存在较强的电子相互作用，制备的异质结构电催化剂在1 M KOH电解质中表现出优异的电催化OER性能。在电流密度为10、50和100 mA·cm−2时，异质结构电催化剂的过电位分别为212、252和279 mV， Tafel斜率仅为71.37 mV·dec−1。本研究为开发高效OER异质结构催化剂提供了新的思路。图形抽象

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.