Low-temperature molten salt synthesis of MoS2@CoS2 heterostructures for efficient hydrogen evolution reaction

Song He; Hongfang Du; Ke Wang; Qianchi Liu; Jinmeng Sun; Yuhang Liu; Zhuzhu Du; Linghai Xie; Wei Ai; Wei Huang

doi:10.1039/d0cc01726d

Low-temperature molten salt synthesis of MoS₂@CoS₂ heterostructures for efficient hydrogen evolution reaction

Song He, Hongfang Du, Ke Wang, Qianchi Liu, Jinmeng Sun, Yuhang Liu, Zhuzhu Du, Linghai Xie, Wei Ai, Wei Huang

Institute of Flexible Electronics

Research output: Contribution to journal › Article › peer-review

104 Scopus citations

Abstract

A versatile low-temperature molten salt approach has been developed for fabricating a MoS₂@CoS₂ heterostructure electrocatalyst, where low-cost molten KSCN serves as both the reaction medium and sulfur source. The as-obtained electrocatalyst with a defect-rich structure is highly efficient for the hydrogen evolution reaction (HER), delivering a low overpotential of 96 mV at an HER current density of 10 mA cm^-2, a small Tafel slope of 60 mV dec^-1, and outstanding durability. Density functional theory (DFT) calculations suggest that the heterostructures present an optimized Gibbs free energy of hydrogen adsorption (ΔG_H∗) close to zero, which is responsible for the excellent HER performance.

Original language	English
Pages (from-to)	5548-5551
Number of pages	4
Journal	Chemical Communications
Volume	56
Issue number	41
DOIs	https://doi.org/10.1039/d0cc01726d
State	Published - 21 May 2020

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title = "Low-temperature molten salt synthesis of MoS2@CoS2 heterostructures for efficient hydrogen evolution reaction",

abstract = "A versatile low-temperature molten salt approach has been developed for fabricating a MoS2@CoS2 heterostructure electrocatalyst, where low-cost molten KSCN serves as both the reaction medium and sulfur source. The as-obtained electrocatalyst with a defect-rich structure is highly efficient for the hydrogen evolution reaction (HER), delivering a low overpotential of 96 mV at an HER current density of 10 mA cm-2, a small Tafel slope of 60 mV dec-1, and outstanding durability. Density functional theory (DFT) calculations suggest that the heterostructures present an optimized Gibbs free energy of hydrogen adsorption (ΔGH∗) close to zero, which is responsible for the excellent HER performance.",

author = "Song He and Hongfang Du and Ke Wang and Qianchi Liu and Jinmeng Sun and Yuhang Liu and Zhuzhu Du and Linghai Xie and Wei Ai and Wei Huang",

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T1 - Low-temperature molten salt synthesis of MoS2@CoS2 heterostructures for efficient hydrogen evolution reaction

AU - He, Song

AU - Du, Hongfang

AU - Wang, Ke

AU - Liu, Qianchi

AU - Sun, Jinmeng

AU - Liu, Yuhang

AU - Du, Zhuzhu

AU - Xie, Linghai

AU - Ai, Wei

AU - Huang, Wei

PY - 2020/5/21

Y1 - 2020/5/21

N2 - A versatile low-temperature molten salt approach has been developed for fabricating a MoS2@CoS2 heterostructure electrocatalyst, where low-cost molten KSCN serves as both the reaction medium and sulfur source. The as-obtained electrocatalyst with a defect-rich structure is highly efficient for the hydrogen evolution reaction (HER), delivering a low overpotential of 96 mV at an HER current density of 10 mA cm-2, a small Tafel slope of 60 mV dec-1, and outstanding durability. Density functional theory (DFT) calculations suggest that the heterostructures present an optimized Gibbs free energy of hydrogen adsorption (ΔGH∗) close to zero, which is responsible for the excellent HER performance.

AB - A versatile low-temperature molten salt approach has been developed for fabricating a MoS2@CoS2 heterostructure electrocatalyst, where low-cost molten KSCN serves as both the reaction medium and sulfur source. The as-obtained electrocatalyst with a defect-rich structure is highly efficient for the hydrogen evolution reaction (HER), delivering a low overpotential of 96 mV at an HER current density of 10 mA cm-2, a small Tafel slope of 60 mV dec-1, and outstanding durability. Density functional theory (DFT) calculations suggest that the heterostructures present an optimized Gibbs free energy of hydrogen adsorption (ΔGH∗) close to zero, which is responsible for the excellent HER performance.

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ER -

Low-temperature molten salt synthesis of MoS₂@CoS₂ heterostructures for efficient hydrogen evolution reaction

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