@article{Yang2026, 
author = {Zhuangge Yang and Jingya Sun and Moyan Wang and Yongjiu Yuan and Yunlong Ma and Zhicheng Chen and Manlou Ye and Jiafang Li and Liangti Qu and Lan Jiang},
title = {Laser-constructed 3D self-supported CoCu metal-organic framework electrocatalysts for efficient oxygen evolution reaction},
year = {2026},
journal = {Nano Research},
volume = {19},
number = {5},
pages = {94908268},
keywords = {metal-organic frameworks, high-entropy alloy, electrocatalyst, oxygen evolution reaction, femtosecond laser processing},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94908268},
doi = {10.26599/NR.2025.94908268},
abstract = {The excellent electrocatalytic activity of metal-organic frameworks (MOFs) has shown great potential in applications, but has also posed outstanding challenges due to their poor conductivity and electrochemical stability. Here, we report a novel and promising self-supported oxygen electrocatalyst featuring bimetallic MOF nanosheets loaded on femtosecond-laser-constructed CoCrFeNi high-entropy alloy substrate (CCM/FHEA). This integrated design leverages synergistic advantages—including expansive specific surface area, rapid electrolyte exchange, and strong electronic interaction—to achieve exceptional oxygen evolution reaction (OER) activity and stability, with a small overpotentials of 231 mV to reach the current density of 10 mA·cm−2 and a Tafel slope of 53.3 mV·dec−1. Furthermore, this electrocatalytic system recorded excellent reaction stability over 300 h with a constant current density of 150 mA·cm−2 at the potential of 1.56 V vs. RHE. Finite-element simulations demonstrate the intensified potential gradients and electric field intensity on the CCM/FHEA electrode surface, while density-functional theory calculations uncover the regulated electronic structure and reduced reaction energy barrier in post-formed CoCu-based oxyhydroxide analogue during OER. This work provides a feasible strategy for the rational design and construction of MOFs-based hierarchical self-supported electrocatalysts for efficient energy conversion technologies.}
}