Potassium electrochemical optimization of the MoS2 catalytic hydrogen evolution reaction performance†

IF 4.3 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Communications Pub Date : 2025-05-20 DOI:10.1039/d5cc01053e

Sizhuo Feng , Yan Tu , Qingfeng Zhang , Lingbin Xie , Shujuan Liu , Longlu Wang , Qiang Zhao

引用次数: 0

Abstract

This study presents a flexible self-supporting C@MoS_x@pCNF electrode, prepared via potassium electrochemical intercalation, which fragments MoS₂ into smaller, amorphous nanoparticles. The amorphous MoS_x shows enhanced active sites and superior hydrophilic/aerophobic properties. The electrode demonstrates excellent HER performance with a low overpotential of 51 mV at 10 mA cm⁻² and a Tafel slope of 77 mV dec⁻¹, offering a new strategy for improving MoS₂ catalysis.

查看原文本刊更多论文

二硫化钼催化析氢反应性能的钾电化学优化

过渡金属二硫化物，特别是二硫化钼（MoS2）因其资源丰富、成本低、催化活性高等特点而日益受到人们的关注。然而，诸如团聚、导电性差和低活性位点密度等挑战限制了它们在析氢反应（HER）中的应用。本研究提出了一种柔性自支撑催化电极C@MoSx@pCNF，该电极是通过钾电化学插层制备的。这种方法将包裹在导电碳中的二硫化钼纳米片分解成更小的片层，将其转化为非晶结构。与结晶MoS2相比，无定形MoSx表现出活性位点增加，超亲水性和超疏水性增强。在酸性条件下，C@MoSx@pCNF电极在电流密度为10 mA cm-2、Tafel斜率为77 mV dec1时的过电位为51 mV，突出了其优异的HER性能，为提高MoS2的催化效率提供了新的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Chemical Communications 化学-化学综合

CiteScore

8.60

自引率

4.10%

发文量

2705

审稿时长

1.4 months

期刊介绍： ChemComm (Chemical Communications) is renowned as the fastest publisher of articles providing information on new avenues of research, drawn from all the world''s major areas of chemical research.