Three-dimensional flower-like NiS2/MoS2 assembly of randomly oriented nanoplate for enhanced hydrogen evolution reaction

Jiwon Kim; Hyung Wook Choi; Dong In Jeong; Ui Young Lee; Mohit Kumar; Bong Kyun Kang; Dae Ho Yoon

doi:10.1016/j.cap.2022.05.010

Three-dimensional flower-like NiS₂/MoS₂ assembly of randomly oriented nanoplate for enhanced hydrogen evolution reaction

Jiwon Kim, Hyung Wook Choi, Dong In Jeong, Ui Young Lee, Mohit Kumar, Bong Kyun Kang, Dae Ho Yoon

Department of Advanced Materials Science and Engineering

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

4 Scopus citations

Abstract

The continually worsening energy crisis has stimulated research into energy conversion technology to produce pure hydrogen, H₂. Transition metal-based compounds have attracted great attention as electrocatalysts for hydrogen evolution reaction (HER) as alternatives to commercial, high-cost, and scarce noble metal-based catalysts. In this work, a 3D flower-like NiS₂/MoS₂ is synthesized with the advantages of a three-dimensional (3D) morphology and the compositing of different metal compounds, thus leading to enhanced electrocatalytic performance. The structure of 3D flower-like NiS₂/MoS₂ augments the specific surface areas resulting from nanoplate assemblies as well as the heterointerface ascribed to two different phases of NiS₂ and MoS₂. These characteristics are confirmed by electrocatalytic measurements of the lower overpotential of 165 mV at 10 mA/cm² with high charge transfer ability, thus demonstrating the structure's potential for advanced electrocatalysts for the HER.

Original language	English
Pages (from-to)	130-137
Number of pages	8
Journal	Current Applied Physics
Volume	43
DOIs	https://doi.org/10.1016/j.cap.2022.05.010
State	Published - Nov 2022

Keywords

Heterostructure
Hydrogen evolution reaction
Molybdenum sulfides
Nickel sulfides

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.cap.2022.05.010

Cite this

@article{2c8b0545ec3a4518813953e74b02f45a,

title = "Three-dimensional flower-like NiS2/MoS2 assembly of randomly oriented nanoplate for enhanced hydrogen evolution reaction",

abstract = "The continually worsening energy crisis has stimulated research into energy conversion technology to produce pure hydrogen, H2. Transition metal-based compounds have attracted great attention as electrocatalysts for hydrogen evolution reaction (HER) as alternatives to commercial, high-cost, and scarce noble metal-based catalysts. In this work, a 3D flower-like NiS2/MoS2 is synthesized with the advantages of a three-dimensional (3D) morphology and the compositing of different metal compounds, thus leading to enhanced electrocatalytic performance. The structure of 3D flower-like NiS2/MoS2 augments the specific surface areas resulting from nanoplate assemblies as well as the heterointerface ascribed to two different phases of NiS2 and MoS2. These characteristics are confirmed by electrocatalytic measurements of the lower overpotential of 165 mV at 10 mA/cm2 with high charge transfer ability, thus demonstrating the structure's potential for advanced electrocatalysts for the HER.",

keywords = "Heterostructure, Hydrogen evolution reaction, Molybdenum sulfides, Nickel sulfides",

author = "Jiwon Kim and Choi, \{Hyung Wook\} and Jeong, \{Dong In\} and Lee, \{Ui Young\} and Mohit Kumar and Kang, \{Bong Kyun\} and Yoon, \{Dae Ho\}",

note = "Publisher Copyright: {\textcopyright} 2022",

year = "2022",

month = nov,

doi = "10.1016/j.cap.2022.05.010",

language = "English",

volume = "43",

pages = "130--137",

journal = "Current Applied Physics",

issn = "1567-1739",

publisher = "Elsevier B.V.",

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T1 - Three-dimensional flower-like NiS2/MoS2 assembly of randomly oriented nanoplate for enhanced hydrogen evolution reaction

AU - Kim, Jiwon

AU - Choi, Hyung Wook

AU - Jeong, Dong In

AU - Lee, Ui Young

AU - Kumar, Mohit

AU - Kang, Bong Kyun

AU - Yoon, Dae Ho

PY - 2022/11

Y1 - 2022/11

N2 - The continually worsening energy crisis has stimulated research into energy conversion technology to produce pure hydrogen, H2. Transition metal-based compounds have attracted great attention as electrocatalysts for hydrogen evolution reaction (HER) as alternatives to commercial, high-cost, and scarce noble metal-based catalysts. In this work, a 3D flower-like NiS2/MoS2 is synthesized with the advantages of a three-dimensional (3D) morphology and the compositing of different metal compounds, thus leading to enhanced electrocatalytic performance. The structure of 3D flower-like NiS2/MoS2 augments the specific surface areas resulting from nanoplate assemblies as well as the heterointerface ascribed to two different phases of NiS2 and MoS2. These characteristics are confirmed by electrocatalytic measurements of the lower overpotential of 165 mV at 10 mA/cm2 with high charge transfer ability, thus demonstrating the structure's potential for advanced electrocatalysts for the HER.

AB - The continually worsening energy crisis has stimulated research into energy conversion technology to produce pure hydrogen, H2. Transition metal-based compounds have attracted great attention as electrocatalysts for hydrogen evolution reaction (HER) as alternatives to commercial, high-cost, and scarce noble metal-based catalysts. In this work, a 3D flower-like NiS2/MoS2 is synthesized with the advantages of a three-dimensional (3D) morphology and the compositing of different metal compounds, thus leading to enhanced electrocatalytic performance. The structure of 3D flower-like NiS2/MoS2 augments the specific surface areas resulting from nanoplate assemblies as well as the heterointerface ascribed to two different phases of NiS2 and MoS2. These characteristics are confirmed by electrocatalytic measurements of the lower overpotential of 165 mV at 10 mA/cm2 with high charge transfer ability, thus demonstrating the structure's potential for advanced electrocatalysts for the HER.

KW - Heterostructure

KW - Hydrogen evolution reaction

KW - Molybdenum sulfides

KW - Nickel sulfides

UR - https://www.scopus.com/pages/publications/85131531504

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DO - 10.1016/j.cap.2022.05.010

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