铌掺杂MoSe2和NiTe异质结构的协同界面实现了高效的析氢电催化

IF 4.2 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications Pub Date : 2025-09-27 DOI:10.1016/j.elecom.2025.108061

Ramaraj Sukanya , Raj Karthik , Abdullah Al Mahmud , Eithne Dempsey , Deivasigamani Ranjith Kumar , Carmel B. Breslin , Jae-Jin Shim

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引用次数: 0

摘要

为了支持清洁氢能源，我们提出了一种掺杂铌的二硒化钼与碲化镍（Nb-MoSe2-NiTe）异质结构，作为酸性介质中析氢反应（HER）的高效电催化剂。铌掺杂调节了MoSe2的电子结构，而NiTe则有助于增强电导率并引入额外的活性界面位点。结构和表面表征证实了成功的掺杂和异质结构的形成。优化后的Nb-MoSe2-NiTe组合物在50 mA/cm2时的过电位为395 mV， Tafel斜率为242 mV/dec， ECSA高达377.5 cm2。这些增强是由于促进电荷转移和氢吸附的协同相互作用。Nb-MoSe2-NiTe为具有成本效益的HER催化提供了一个有前途的平台，展示了一种合理的策略，将电子和界面工程集成在一起，实现可持续的氢气生产。

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Synergistic interface of Nb-doped MoSe2 and NiTe heterostructure enables efficient electrocatalysis for hydrogen evolution

To support clean hydrogen energy, we present a niobium-doped molybdenum diselenide integrated with nickel telluride (Nb-MoSe₂–NiTe) heterostructure as an efficient electrocatalyst for the hydrogen evolution reaction (HER) in acidic media. Nb-doping modulates the electronic structure of MoSe₂, while NiTe contributes to enhanced conductivity and introduces additional active interfacial sites. Structural and surface characterizations confirm successful doping and heterostructure formation. The optimized Nb-MoSe₂–NiTe composition achieves a low overpotential of 395 mV at 50 mA/cm² and a Tafel slope of 242 mV/dec, along with a high ECSA of 377.5 cm². These enhancements result from synergistic interactions that promote charge transfer and hydrogen adsorption. The Nb-MoSe₂–NiTe offers a promising platform for cost-effective HER catalysis, demonstrating a rational strategy that integrates electronic and interfacial engineering for sustainable hydrogen production.

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来源期刊

Electrochemistry Communications 工程技术-电化学

CiteScore

8.50

自引率

3.70%

发文量

160

审稿时长

1.2 months

期刊介绍： Electrochemistry Communications is an open access journal providing fast dissemination of short communications, full communications and mini reviews covering the whole field of electrochemistry which merit urgent publication. Short communications are limited to a maximum of 20,000 characters (including spaces) while full communications and mini reviews are limited to 25,000 characters (including spaces). Supplementary information is permitted for full communications and mini reviews but not for short communications. We aim to be the fastest journal in electrochemistry for these types of papers.