分层SnO2/SnS2异质结工程促进碱性和酸性溶液中析氢反应

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-04-27 DOI:10.1016/j.jallcom.2025.180639

He Wang, Yanli Sang, Qing Yu, Huanxin Zhao, Xuejun Zhang

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引用次数: 0

摘要

二硫化锡（SnS2）是过渡金属二硫化物（TMDs）中的一种，作为析氢反应（HER）的电催化剂具有广阔的应用前景。不幸的是，SnS2电催化的应用受到导电性和稳定性差的限制。本文报道了一种由片层组成的三维纳米花状异质结（SnO2/SnS2）。SnO2/SnS2异质结在酸性和碱性电解质溶液中均表现出优异的HER性能，优于其他HER电催化剂（在1 M KOH和0.5 M H2SO4中，电流密度为10 mA cm-2时的过电位为126.2 mV和224 mV），并在1 M KOH中实现了长期的HER耐久性。这种结构不仅有利于增强电子相互作用，加速催化剂缓慢的解离动力学，而且大大提高了材料的稳定性。本文为合成先进高效的锡基HER电催化剂提供了一条有意义的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Heterojunction engineering of the hierarchical SnO2/SnS2 to boost hydrogen evolution reaction in alkaline and acidic solution

Tin disulfide (SnS₂) is one of transition metal disulfides (TMDs), which has shown great prospect as an electrocatalyst for hydrogen evolution reaction (HER). Unfortunately, the application of SnS₂ electrocatalysis is limited by poor conductivity and stability. Herein, a 3D nanoflower-like heterojunction (SnO₂/SnS₂) consisting of lamellae is reported. The SnO₂/SnS₂ heterojunction exhibits excellent HER performance in both acidic and alkaline electrolyte solutions, which is superior to other HER electrocatalysts (An overpotential of 126.2 mV and 224 mV at a current density of 10 mA cm^–2 in 1 M KOH and 0.5 M H₂SO₄), and achieves long-term durability for HER in 1 M KOH. This configuration is not only beneficial to enhance electron interactions and accelerate the sluggish dissociation kinetics of the catalyst but also substantially improve the stability of the material. This paper provides a meaningful approach for the synthesis of advanced and efficient tin-based HER electrocatalysts.

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.