Issue 18, 2024

Ti3C2Tx MXene induces strong electronic metal–support interaction with Ni nanoparticles for hydrogen evolution reaction with Pt-like activity

Abstract

The commercialization of hydroxide-exchange membrane-based water electrolyzers is mainly hindered by the lack of low-cost, high-efficiency, and stable electrocatalysts for the sluggish alkaline hydrogen evolution reaction (HER). Here, Ni nanoparticles loaded on Ti3C2Tx (Ni/Ti3C2Tx) were synthesized by a facile oleylamine-assisted solvent method following a hydrogen-reduction treatment. In 1.0 M KOH solution, this composite catalyst needs an extremely low overpotential of 36 mV to drive 10 mA cm−2 for HER with a low Tafel slope of 52.2 mV dec−1, which is close to those of benchmark Pt/C catalysts. Further, probing experiments and DFT calculations reveal that the strong electronic metal–support interaction (EMSI) between Ni nanoparticles and the Ti3C2Tx substrate enables low water-dissociation energy and optimized hydrogen adsorption energy on the electrocatalyst, which endows Ni/Ti3C2Tx with amazing HER catalytic performances. This work offers a fresh design idea for the development of non-precious electrocatalysts with Pt-like catalytic activity for HER.

Graphical abstract: Ti3C2Tx MXene induces strong electronic metal–support interaction with Ni nanoparticles for hydrogen evolution reaction with Pt-like activity

Supplementary files

Article information

Article type
Research Article
Submitted
21 May 2024
Accepted
12 Jul 2024
First published
17 Jul 2024

Inorg. Chem. Front., 2024,11, 5957-5963

Ti3C2Tx MXene induces strong electronic metal–support interaction with Ni nanoparticles for hydrogen evolution reaction with Pt-like activity

Y. Han, X. Yang, Y. Zhao, M. Zhao, H. Sun, J. Chen, J. Sun, X. Chen and C. Li, Inorg. Chem. Front., 2024, 11, 5957 DOI: 10.1039/D4QI01280A

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