Ag-doped Ag2S@MoS2 catalyst for alkaline hydrogen evolution reaction

被引：5

作者：

Cao, Yong ^{[1
]}

Luo, Penghui ^{[1
]}

Xu, Yang ^{[1
]}

Zhang, Cong ^{[1
]}

Tian, Chang ^{[1
]}

You, Yuanqi ^{[1
]}

Tian, Meiling ^{[1
]}

Wang, Liqiong ^{[1
]}

Zhou, Shenggang ^{[1
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Yunnan, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2021年 / 32卷 / 16期

关键词：

ELECTRODES; EFFICIENT; MOS2;

D O I：

10.1007/s10854-021-06632-9

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, a hydrothermal synthesis method synthesized a foamed nickel (NF)-supported Ag-doped Ag2S@MoS2 hydrogen evolution catalyst. Silver doping can improve the conductivity of MoS2, thereby improving the hydrogen evolution activity of MoS2. Compared with a single MoS2, the Ag2S@MoS2 electrode has a larger specific surface area and has many highly catalytic S edges. In 1 M KOH, the overpotential of Ag2S@Ag0.33MoS2/NF electrode at 10 mA cm(-2) is approximately 188 mV. Comparing with the overpotential of NF (391 mV) and MoS2/NF (290 mV), it is much lower. Further changing the amount of silver added, the overpotential of Ag2S@Ag0.5MoS (2)/NF is further reduced to 165 mV at a current density of 10 mA cm(-2). When the voltage is 0.35 V, the current densities of Ag2S@Ag0.33MoS2/NF (42.45 mA cm(-2)) and Ag2S@Ag0.5MoS2/NF (55.5 mA cm(-2)) are higher than those of NF (4.91 mA cm(-2)) and MoS2/NF (20.51 mA cm(-2)).

引用

页码：21297 / 21307

页数：11

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