Mo3N2/VO2 composite as electrocatalysts for hydrogen evolution reaction

Saheed  Abiola Raheem; Hangjia   Shen; Ali Saad; Haichuan   Guo; Tiju  Thomas; Minghui  Yang

doi:10.1016/j.inoche.2022.109614

Mo₃N₂/VO₂ composite as electrocatalysts for hydrogen evolution reaction

Saheed Abiola Raheem, Hangjia Shen, Ali Saad, Haichuan Guo, Tiju Thomas^*, Minghui Yang^*

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

Abstract

There is a clear need to develop efficient and stable electrocatalysts for hydrogen evolution reaction (HER) that do not rely on noble metals. Transition metal nitrides are emerging as good substitutes for HER electrocatalysts because of their distinctive electronic properties and availability. Furthermore, forming suitable heterojunctions can improve their activities further. Here, a nitridation treatment, followed by a solvothermal method is used to synthesize Mo ₃N ₂/VO ₂ composites for obtaining outstanding HER electrocatalysts that operate in an acidic solution. The introduction of VO ₂ enhances the electronic conductivity and the active sites of Mo ₃N ₂/VO ₂. More so, the synergy between the interface of Mo ₃N ₂ and VO ₂ facilitates electron transfer and speeds up reaction kinetics. When investigated for HER, the best Mo ₃N ₂/VO ₂ catalyst displays remarkable catalytic activity with an overpotential of 166 mV and a rather small Tafel slope of 43 mV dec ⁻¹ in 0.5 M H ₂SO ₄ at a current density of 10 mA cm ⁻². As prepared Mo ₃N ₂/VO ₂ exhibits excellent stability in acidic solution over 12 h. This work opens up the possibility associated with molybdenum nitride-based electrocatalysts.

Original language	English
Article number	109614
Journal	Inorganic Chemistry Communications
Volume	142
Number of pages	7
ISSN	1387-7003
DOIs	https://doi.org/10.1016/j.inoche.2022.109614
Publication status	Published - Aug 2022
Externally published	Yes

Keywords

Composites
Hydrogen evolution reaction
Microparticles
Molybdenum nitrides

Access to Document

10.1016/j.inoche.2022.109614

Cite this

@article{efe96b9b5a4a43368e0b4ad2e4a90356,

title = "Mo3N2/VO2 composite as electrocatalysts for hydrogen evolution reaction",

abstract = "There is a clear need to develop efficient and stable electrocatalysts for hydrogen evolution reaction (HER) that do not rely on noble metals. Transition metal nitrides are emerging as good substitutes for HER electrocatalysts because of their distinctive electronic properties and availability. Furthermore, forming suitable heterojunctions can improve their activities further. Here, a nitridation treatment, followed by a solvothermal method is used to synthesize Mo 3N 2/VO 2 composites for obtaining outstanding HER electrocatalysts that operate in an acidic solution. The introduction of VO 2 enhances the electronic conductivity and the active sites of Mo 3N 2/VO 2. More so, the synergy between the interface of Mo 3N 2 and VO 2 facilitates electron transfer and speeds up reaction kinetics. When investigated for HER, the best Mo 3N 2/VO 2 catalyst displays remarkable catalytic activity with an overpotential of 166 mV and a rather small Tafel slope of 43 mV dec −1 in 0.5 M H 2SO 4 at a current density of 10 mA cm −2. As prepared Mo 3N 2/VO 2 exhibits excellent stability in acidic solution over 12 h. This work opens up the possibility associated with molybdenum nitride-based electrocatalysts.",

keywords = "Composites, Hydrogen evolution reaction, Microparticles, Molybdenum nitrides",

author = "{Abiola Raheem}, Saheed and Hangjia Shen and Ali Saad and Haichuan Guo and Tiju Thomas and Minghui Yang",

year = "2022",

month = aug,

doi = "10.1016/j.inoche.2022.109614",

language = "English",

volume = "142",

journal = "Inorganic Chemistry Communications",

issn = "1387-7003",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Mo3N2/VO2 composite as electrocatalysts for hydrogen evolution reaction

AU - Abiola Raheem, Saheed

AU - Shen, Hangjia

AU - Saad, Ali

AU - Guo, Haichuan

AU - Thomas, Tiju

AU - Yang, Minghui

PY - 2022/8

Y1 - 2022/8

N2 - There is a clear need to develop efficient and stable electrocatalysts for hydrogen evolution reaction (HER) that do not rely on noble metals. Transition metal nitrides are emerging as good substitutes for HER electrocatalysts because of their distinctive electronic properties and availability. Furthermore, forming suitable heterojunctions can improve their activities further. Here, a nitridation treatment, followed by a solvothermal method is used to synthesize Mo 3N 2/VO 2 composites for obtaining outstanding HER electrocatalysts that operate in an acidic solution. The introduction of VO 2 enhances the electronic conductivity and the active sites of Mo 3N 2/VO 2. More so, the synergy between the interface of Mo 3N 2 and VO 2 facilitates electron transfer and speeds up reaction kinetics. When investigated for HER, the best Mo 3N 2/VO 2 catalyst displays remarkable catalytic activity with an overpotential of 166 mV and a rather small Tafel slope of 43 mV dec −1 in 0.5 M H 2SO 4 at a current density of 10 mA cm −2. As prepared Mo 3N 2/VO 2 exhibits excellent stability in acidic solution over 12 h. This work opens up the possibility associated with molybdenum nitride-based electrocatalysts.

AB - There is a clear need to develop efficient and stable electrocatalysts for hydrogen evolution reaction (HER) that do not rely on noble metals. Transition metal nitrides are emerging as good substitutes for HER electrocatalysts because of their distinctive electronic properties and availability. Furthermore, forming suitable heterojunctions can improve their activities further. Here, a nitridation treatment, followed by a solvothermal method is used to synthesize Mo 3N 2/VO 2 composites for obtaining outstanding HER electrocatalysts that operate in an acidic solution. The introduction of VO 2 enhances the electronic conductivity and the active sites of Mo 3N 2/VO 2. More so, the synergy between the interface of Mo 3N 2 and VO 2 facilitates electron transfer and speeds up reaction kinetics. When investigated for HER, the best Mo 3N 2/VO 2 catalyst displays remarkable catalytic activity with an overpotential of 166 mV and a rather small Tafel slope of 43 mV dec −1 in 0.5 M H 2SO 4 at a current density of 10 mA cm −2. As prepared Mo 3N 2/VO 2 exhibits excellent stability in acidic solution over 12 h. This work opens up the possibility associated with molybdenum nitride-based electrocatalysts.

KW - Composites

KW - Hydrogen evolution reaction

KW - Microparticles

KW - Molybdenum nitrides

U2 - 10.1016/j.inoche.2022.109614

DO - 10.1016/j.inoche.2022.109614

M3 - Journal article

SN - 1387-7003

VL - 142

JO - Inorganic Chemistry Communications

JF - Inorganic Chemistry Communications

M1 - 109614

ER -