Improvement of MoS2 electrocatalytic activity for hydrogen evolution reaction by ion irradiation

被引：12

作者：

Mravik, Jelena Rmus ^{[1
]}

Milanovic, Igor ^{[1
]}

Govedarovic, Sanja Milosevic ^{[1
]}

Mrakovic, Ana ^{[2
]}

Korneeva, Ekaterina ^{[3
]}

Simatovic, Ivana Stojkovic ^{[4
]}

Kurko, Sandra ^{[1
]}

机构：

[1] Univ Belgrade, Natl Inst Republ Serbia, Vinca Inst Nucl Sci, Ctr Excellence Hydrogen & Renewable Energy CONVINC, POB 522, Belgrade 11351, Serbia

[2] Univ Belgrade, Vinca Inst Nucl Sci, Natl Inst Republ Serbia, POB 522, Belgrade 11351, Serbia

[3] Joint Inst Nucl Res, Dubna, Russia

[4] Univ Belgrade, Fac Phys Chem, POB 47, Belgrade 11158, Serbia

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2023年 / 48卷 / 98期

关键词：

Molybdenum disulfide; Hydrogen evolution reaction; Ion irradiation; Electrocatalyst; FLOWER-LIKE MOS2; HYDROTHERMAL SYNTHESIS; EDGE SITES; EFFICIENT; NANOFLOWERS; NANOSHEETS; PERFORMANCE; CATALYST; SHEETS;

D O I：

10.1016/j.ijhydene.2023.06.178

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Molybdenum disulfide (MoS2) is considered promising noble metal-free catalysts for the hydrogen evolution reaction (HER). Whereas the bulk MoS2 does not exhibit significant activity, the catalytic properties of various nanostructures are noticeable. Therefore we synthesized flower-like molybdenum disulfide with the simple, one-step hydrothermal method. To enhance the catalytic activity of the material, low-energy ion irradiation is employed. As-prepared MoS2 is irradiated with hydrogen and carbon ions of various energies (20-40 keV) and fluences (1014-1017 ion/cm2). Our results show that irradiation has beneficial influence on MoS2 catalytic activity toward hydrogen evolution reaction. By producing morphological changes and defects in the structure, ion irradiation also impacts the conductivity of the material, which shows predominant effect on hydrogen evolution. The increase of current density at an overpotential of 300 mV with hydrogen ion irradiation is even 6 times higher than for as-synthesized catalyst. (c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：38676 / 38685

页数：10

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