无机材料学报

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炭黑表面CoMoSSe异质结构合金的制备及其高效析氢研究

任先培1, 李超1, 凌芳1, 胡启威1, 于俊玲1, 向晖1, 彭跃红2   

  1. 1.四川轻化工大学 物理与电子工程学院,自贡 643000;
    2.楚雄师范学院 物理与电子科学学院,楚雄 675000
  • 收稿日期:2024-11-18 修回日期:2025-02-18
  • 作者简介:任先培(1982-), 男, 副教授. E-mail: renxianpei@163.com

CoMoSSe Alloy with Heterostructure on Carbon Black for Enhanced Electro-catalytic H2 Evolution

REN Xianpei1, LI Chao1, LING Fang1, HU Qiwei1, YU Junling1, XIANG Hui1, PENG Yuehong2   

  1. 1. School of Physics and Electronic Engineering, Sichuan University of Science and Engineering, Zigong 643000, China;
    2. School of Physics and Electronical Science, Chuxiong Normal University, Chuxiong 675000, China
  • Received:2024-11-18 Revised:2025-02-18
  • About author:REN Xianpei (1982-), male, associate professor. E-mail: renxianpei@163.com
  • Supported by:
    The Scientific Research and Innovation Team Program of Sichuan University of Science and Engineering (SUSE652B004, 2024RC13); The Special Basic Cooperative Research Programs of Yunnan Provincial Undergraduate Universities Association (202101BA070001-085)

摘要: 过渡金属二硫属化物(TMD)在电催化分解水制氢方面具有较好的应用前景, 引起了人们的广泛关注, 然而, 它们的电催化制氢性能与金属铂还有较大差距。构建异质结合金被认为是提高析氢活性的有效方法。本研究采用简单的溶胶-凝胶工艺在炭黑颗粒表面合成了一种新型的四元CoMoSSe复合材料(CoMoSSe@CB)。与CoSe@CB以及MoS2@CB相比, CoMoSSe@CB表现出更加优异的析氢活性, 在–10 mA·cm–2阴极电流密度下的过电位仅为190 mV, Tafel斜率为62 mV·dec–1。这主要归因于复合材料的异质结构以及Co、Mo、S和Se原子之间的合金效应, 调节了电子结构和氢原子吸附的自由能, 从而增加了催化剂的活性位点数量、增强了催化剂电荷转移能力。这项工作可为设计新型高效TMD电催化剂提供指导。

关键词: 过渡金属硫族化合物, 合金, 异质结构, 析氢反应

Abstract: Transition metal dichalcogenides (TMDs) recently attracted widespread attention due to their potential application to the electrocatalysis of the hydrogen evolution reaction (HER). However, their HER performance is far inferior to that of platinum (Pt) metal. Preparation of multi-elemental alloy and construction of heterostructure are considered as highly effective methods to enhance hydrogen production activity. Herein, a novel quaternary CoMoSSe alloy with hetero-structure was synthesized on the surface of carbon black particles (CoMoSSe@CB) by a simple Sol–Gel process and served as HER catalyst. Compared to CoSe@CB and MoS2@CB electrocatalysts, CoMoSSe@CB exhibits superior HER activity with a low overpotential of 190 mV at –10 mA·cm-2 and a Tafel slope of 62 mV·dec-1. This improvement is attributed to the alloying effects among Co, Mo, S and Se, as well as the heterogeneous structure in the composite material, which regulate the electronic structure and intermediate free energy, thereby increase the number of active sites and enhance charge-transfer ability. This work can provide new ideas and concepts for designing novel and efficient TMD electrocatalysts.

Key words: transition metal dichalcogenides, alloy, heterostructure, hydrogen evolution reaction

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