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Research Article | Open Access

Ti3C2 MXene folded nanosheets with Co(OH)2 integrated on carbon cloth for enhanced oxygen evolution performance

Bingbing Huang1, Xilin Zhang1,2, Qingfang Chang1,2 ( ), Runmin Li3, Qian Bai3, Shuai Li4 ( ), Xi Liu5, Jiajing Pei5 ( )
School of Physics, Henan Normal University, Xinxiang 453007, China
Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, School of Environment, Henan Normal University, Xinxiang 453007, China
Energy and Catalysis Center, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
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Abstract

The oxygen evolution reaction (OER) suffers from low intrinsic activity, poor oxidative stability, and insufficient electrical conductivity, which severely limit the practical deployment of non-precious metal electrocatalysts. To overcome these obstacles, we designed an MXene@Co(OH)2 hybrid supported on carbon cloth (MXene@Co(OH)2/CC) using a straightforward electrodeposition and vacuum drying method. Strong interfacial interactions between MXene and Co(OH)2 boost charge transfer, create abundant accessible active sites, and reinforce structural integrity under OER working conditions. Consequently, the MXene@Co(OH)2/CC electrode requires only 261 mV to achieve 10 mA·cm−2 and shows a Tafel slope of 61.7 mV·dec−1, and retains excellent performance for more than 1100 h. Beyond delivering a highly efficient and low-cost OER catalyst, this work also provides a valuable paradigm for constructing well-defined heterostructured catalytic systems via interfacial engineering.

Graphical Abstract

A two-step synthesis route (electrodeposition → soaking → vacuum drying) yields a highly active MXene@Co(OH)2 hybrid supported on carbon cloth (MXene@Co(OH)2/CC) heterostructure electrocatalyst. Electronic coupling at the Ti3C2Tx MXene interface triggers local charge redistribution and modifies the electronic states of the active sites, which in turn accelerates charge transport and oxygen evolution reaction (OER) kinetics. The optimal catalyst attains 10 mA·cm−2 at an overpotential as low as 261 mV, shows a Tafel slope of 61.7 mV·dec−1, and maintains stable operation for > 1100 h under 10 mA·cm−2, making it a promising noble-metal-free candidate for next-generation water electrolysis.

Keywords

Ti3C2Tx MXeneoxygen evolution reactionelectrocatalysiselectronic couplingstrong interfacial interaction

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Nano Research
Volume 19 Issue 12,
December 2026
Article number: 94908840
DOI: 10.26599/NR.2026.94908840

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Cite this article:
Huang B, Zhang X, Chang Q, et al. Ti3C2 MXene folded nanosheets with Co(OH)2 integrated on carbon cloth for enhanced oxygen evolution performance. Nano Research, 2026, 19(12): 94908840. https://doi.org/10.26599/NR.2026.94908840

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Received: 06 April 2026
Revised: 11 May 2026
Accepted: 13 May 2026
Published: 15 September 2026
© The Author(s) 2026. Published by Tsinghua University Press.

This is an open access article under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0, https://creativecommons.org/licenses/by/4.0/).