3D Carbon Foam Supported Edge-Rich N-Doped MoS 2 Nanoflakes for Enhanced Electrocatalytic Hydrogen Evolution

Molybdenum disulfide (MoS ) is one of the most promising alternatives to the Pt-based electrocatalysts for the hydrogen evolution reaction (HER). However, its performance is currently limited by insufficient active edge sites and poor electron transport. Hence, enormous efforts have been devoted to...

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Published in:Chemistry : a European journal 2020-03, Vol.26 (18), p.4150-4156
Main Authors: Jia, Xueying, Ren, Hongyuan, Hu, Hanbin, Song, Yu-Fei
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Language:English
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container_title Chemistry : a European journal
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creator Jia, Xueying
Ren, Hongyuan
Hu, Hanbin
Song, Yu-Fei
description Molybdenum disulfide (MoS ) is one of the most promising alternatives to the Pt-based electrocatalysts for the hydrogen evolution reaction (HER). However, its performance is currently limited by insufficient active edge sites and poor electron transport. Hence, enormous efforts have been devoted to constructing more active edge sites and improving conductivity to obtain enhanced electrocatalytic performance. Herein, the 3D carbon foam (denoted as CF) supported edge-rich N-doped MoS nanoflakes were successfully fabricated by using the commercially available polyurethane foam (PU) as the 3D substrate and PMo O clusters (denoted as PMo ) as the Mo source through redox polymerization, followed by sulfurization. Owing to the uniform distribution of nanoscale Mo sources and 3D carbon foam substrate, the as-prepared MoS -CF composite possessed well-exposed active edge sites and enhanced electrical conductivity. Systematic investigation demonstrated that the MoS -CF composite showed high HER performance with a low overpotential of 92 mV in 1.0 m KOH and 155 mV in 0.5 m H SO at a current density of 10 mA cm . This work offers a new pathway for the rational design of MoS -based HER electrocatalysts.
doi_str_mv 10.1002/chem.201904669
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title 3D Carbon Foam Supported Edge-Rich N-Doped MoS 2 Nanoflakes for Enhanced Electrocatalytic Hydrogen Evolution
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