Ternary amorphous/crystalline NiMoB/Ni@Ti3C2 heterostructures with electronic modulation for high-performance alkaline hydrogen evolution catalysis

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-07-07 DOI:10.1063/5.0280071

Cheng Lin, Liang Yang, Yanling Cao, Man Jiang, Yanjing Zhang, Ting Yu, Yaohui Qu, Cailei Yuan, Manman Guo

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引用次数: 0

Abstract

Constructing multicomponent heterostructures with coexisting amorphous and crystalline phases offers a promising strategy to finely optimize electronic structures and thereby promote the hydrogen evolution reaction (HER) kinetics in alkaline media. Here, we design a ternary heterostructure consisting of amorphous/crystalline NiMoB/Ni anchored on Ti3C2 MXene (denoted as a-NiMoB/c-Ni@Ti3C2), which fully leverages synergistic electronic modulation at the heterointerfaces. This architecture significantly enhances active site exposure, improves charge transfer efficiency, and stabilizes the catalyst framework. As a result, the a-NiMoB/c-Ni@Ti3C2 catalyst achieves an impressive HER performance, requiring an overpotential of only 87.8 mV to deliver 10 mA cm−2 with a low Tafel slope of 40.3 mV dec−1 and excellent operational durability in 1 M KOH. Density functional theory calculations combined with photoelectron spectroscopy analysis reveal that interfacial electronic interactions between NiMoB/Ni and Ti3C2 critically drive the improved HER kinetics. This work offers a perspective for the rational design of high-efficiency ternary heterostructure electrocatalysts for alkaline hydrogen production.

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三元非晶/晶体NiMoB/Ni@Ti3C2异质结构与电子调制的高性能碱性析氢催化

构建非晶相和晶相共存的多组分异质结构为精细优化电子结构从而促进碱性介质中析氢反应（HER）动力学提供了一种很有前途的策略。在这里，我们设计了一个由非晶/晶NiMoB/Ni锚定在Ti3C2 MXene上的三元异质结构（表示为a-NiMoB/c-Ni@Ti3C2），它充分利用了异质界面上的协同电子调制。这种结构显著提高了活性位点暴露，提高了电荷转移效率，并稳定了催化剂框架。因此，a- nimob /c-Ni@Ti3C2催化剂实现了令人印象深刻的HER性能，只需要87.8 mV的过电位就可以提供10 mA cm - 2，低Tafel斜率为40.3 mV dec - 1，并且在1 M KOH下具有出色的工作耐久性。密度泛函理论计算结合光电子能谱分析表明，NiMoB/Ni与Ti3C2之间的界面电子相互作用是提高HER动力学的关键因素。本研究为合理设计高效三元异质结构碱性制氢电催化剂提供了理论依据。

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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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.