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Electrochimica Acta

Electrochimica Acta

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Anchoring Ultrafine Ru Nanoparticles Triggers 2H MoS2 Basal Plane for Efficient Dual-pH Hydrogen Evolution

Published:6 December 2024 DOI: 10.1016/j.electacta.2024.145485
Kunjie Wang, Yanan Li, Dongxu Yang, Yunsi Wang, Fuan Wei, Bingxin Liu, Peng Zhang, Benhua Xu, Yongcheng Li

Abstract

Coupling noble metals on molybdenum disulfide (MoS2) has emerged as a promising strategy for triggering inert basal plane and boosting hydrogen evolution reaction (HER) performances. Herein, ultrafine Ru nanoparticles (NPs) are decorated on vertical 2H MoS2 nanosheets via a facile hydrothermal method. Benefiting from new active site centers triggered by ultrafine Ru NPs and vertically grown 2H MoS2 nanosheets on carbon cloth (CC), Ru0.15@2H MoS2 exhibits impressive HER performances in dual pH media, with low overpotentials of 20 and 111 mV and small Tafel slope of 67.6 and 76.3 mV dec-1 in alkaline and acid solutions to drive a current density of 10 mA cm-2. DFT calculation results prove that ultrafine Ru NPs decorated on 2H MoS2 nanosheets endow Ru0.15@2H MoS2 with low hydrogen adsorption free energy and fast charge transfer kinetics. This work provides an effective and simple method for designing MoS2-based catalysts with high catalytic activity to decorate precious metal in a wide pH medium.

Substances (3)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Urea 57-13-6 CH4N2O 1047 suppliers $5.00-$9960.00
Thioacetamide 62-55-5 C2H5NS 702 suppliers $6.35-$2381.00
Molybdenum trioxide 1313-27-5 MoO3 573 suppliers $13.00-$4325.28

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