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Open AccessArticle

Insertion of Platinum Nanoparticles into MoS2 Nanoflakes for Enhanced Hydrogen Evolution Reaction

1
The State Key Laboratory of Refractories and Metallurgy, Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China
2
Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA
3
Electroanalytical Lab., Department of Chemistry, Sri Venkateswara University, Tirupati 517502, India
4
School of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan 430081, China
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(9), 1520; https://doi.org/10.3390/ma11091520
Received: 10 July 2018 / Revised: 13 August 2018 / Accepted: 22 August 2018 / Published: 24 August 2018
Pt as a chemical inert metal has been widely applied as the counter electrode in various electrochemical measurements. However, it can also be dissolved and redeposit to the working electrode under certain electrochemical circumstances. Herein we demonstrated a cyclic voltammetry (CV) cycling method to synthesize a catalyst comprising inserted Pt nanoparticles into MoS2 nanoflake stack structures on stainless steel mesh (SSM). The binder-free composite structure exhibits significantly enhanced hydrogen evolution reaction (HER) catalytic activity with an overpotentials of 87 mV at 10 mA cm−2. The deposited Pt nanoparticles significantly enhance the catalytic activity through changing the structure of MoS2 and increasing the amount of active sites. This work provides a new way forward for rational design of the nano-electrocatalysts. View Full-Text
Keywords: MoS2; HER; Pt counter electrode; insertion; stainless steel mesh MoS2; HER; Pt counter electrode; insertion; stainless steel mesh
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MDPI and ACS Style

Li, D.; Li, Y.; Zhang, B.; Lui, Y.H.; Mooni, S.; Chen, R.; Hu, S.; Ni, H. Insertion of Platinum Nanoparticles into MoS2 Nanoflakes for Enhanced Hydrogen Evolution Reaction. Materials 2018, 11, 1520.

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