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Updated: Jan 20, 2026

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
Published on: April 28, 2023
Modulating the Electronic Structure of Porous Nanocubes Derived from Trimetallic Metal-Organic Frameworks to Boost
Mengting Lu1, Xigaogang Yang1, Yuwen Li1
1Institute of Fiber based New Energy Materials, The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
Abstract:
The preparation of noble metal-free catalysts for water splitting is the key to low-cost, sustainable hydrogen generation. Herein, through a pyrolysis-oxidation process, we prepared a series of Co-Fe-Ni trimetallic oxidized carbon nanocubes (Co1-X FeX Ni-OCNC) with a continuously changeable Co/Fe ratio (X=0, 0.1, 0.2, 0.5, 0.8, 0.9, 1). The Co1-X FeX Ni-OCNC shows a volcano-type oxygen evolution reaction (OER) activity. The optimized Co0.1 Fe0.9 Ni-OCNC achieves a low overpotential of 268 mV at 10 mA cm-2 with a very low Tafel slope of 48 mV dec-1 in 1 m KOH. At the same time, the stability of the Co0.1 Fe0.9 Ni-OCNC is also outstanding; after 1000 CV cycles, the LSV plot is almost coincident. Moreover, the potential remains almost of the same value at 10 mA cm-2 after 12 h in comparison to the initial value. The excellent electrocatalytic properties can be attributed to the synergistic cooperation between each component. Therefore, the Co0.1 Fe0.9 Ni-OCNC is a promising candidate instead of precious metal-based electrocatalysts for OER.
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