Atomic-layered Pt clusters on S-vacancy rich MoS2−x with high electrocatalytic hydrogen evolution

Feng Shi; Wenzhuo Wu; Jiafu Chen; Qun Xu

doi:10.1039/D1CC02304G

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Atomic-layered Pt clusters on S-vacancy rich MoS_2−x with high electrocatalytic hydrogen evolution†

Feng Shi,‡^ab Wenzhuo Wu,‡^ab Jiafu Chen*^a and Qun Xu

*^ab

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* Corresponding authors

^a College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
E-mail: chenjf@zzu.edu.cn, qunxu@zzu.edu.cn

^b Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, P. R. China

Abstract

Developing suitable supports to maximize the atomic utilization efficiency of platinum group metals is of great significance to hydrogen evolution from water splitting. Herein, we report a fully exposed Pt cluster supported on an S-vacancy rich MoS_2−x support (Pt/Sv-MoS_2−x) by a facile impregnation method. Pt/Sv-MoS_2−x exhibits an outstanding electrochemical HER performance with a low overpotential of 26.6 mV at a current density of 10 mA cm⁻², a small Tafel slope of 34.8 mV dec⁻¹ and good durability. Most importantly, the mass activity of Pt is an order of magnitude more active than that of commercial Pt/C at an overpotential of 0.08 V. We attribute this exceptional HER catalytic performance to the fact that platinum and Sv-MoS_2−x act in synergy to accelerate the reaction kinetics.

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Article information

DOI: https://doi.org/10.1039/D1CC02304G
Article type: Communication
Submitted: 30 Apr 2021
Accepted: 16 Jun 2021
First published: 16 Jun 2021

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Chem. Commun., 2021,57, 7011-7014

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Atomic-layered Pt clusters on S-vacancy rich MoS_2−x with high electrocatalytic hydrogen evolution

F. Shi, W. Wu, J. Chen and Q. Xu, Chem. Commun., 2021, 57, 7011 DOI: 10.1039/D1CC02304G

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Chemical Communications