In situ Raman analysis of the NiFe/NiFe2O4 heterostructure for excellent oxygen evolution activity

Dongyang Fang; Guijin Yang; Yujun Fu; Daqiang Gao; Xiaodong Wang; Yiran Mao; Jinyun Li

doi:10.1039/D5CC05165G

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In situ Raman analysis of the NiFe/NiFe₂O₄ heterostructure for excellent oxygen evolution activity

Dongyang Fang,†^a Guijin Yang,

†*^a Yujun Fu,^b Daqiang Gao,

^c Xiaodong Wang,^a Yiran Mao^a and Jinyun Li^a

Author affiliations

* Corresponding authors

^a Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou, People's Republic of China
E-mail: yanggj09@lzu.edu.cn

^b Institute of Electronic Materials and Devices, School of Materials and Energy, Lanzhou University, People's Republic of China

^c School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People's Republic of China

Abstract

A NiFe/NiFe₂O₄ heterostructure constructed via brief annealing triggers FeOOH formation and promotes γ-NiOOH evolution, achieving superior OER activity (146 mV@10 mA cm⁻², 24.11 mV dec⁻¹) and industrial stability (>100 h@500 mA cm⁻²), offering new insights into heterostructured catalyst design.

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Article information

DOI: https://doi.org/10.1039/D5CC05165G
Article type: Communication
Submitted: 09 Sep 2025
Accepted: 01 Nov 2025
First published: 03 Nov 2025

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Chem. Commun., 2025,61, 19261-19264

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In situ Raman analysis of the NiFe/NiFe₂O₄ heterostructure for excellent oxygen evolution activity

D. Fang, G. Yang, Y. Fu, D. Gao, X. Wang, Y. Mao and J. Li, Chem. Commun., 2025, 61, 19261 DOI: 10.1039/D5CC05165G

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Chemical Communications

In situ Raman analysis of the NiFe/NiFe₂O₄ heterostructure for excellent oxygen evolution activity

Abstract

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In situ Raman analysis of the NiFe/NiFe₂O₄ heterostructure for excellent oxygen evolution activity

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