Molten Salt-Assisted Construction of Strong Metal−Support Interaction (SMSI) Type Pt-CeO2 Electrocatalyst for Acidic and Alkaline Hydrogen Evolution

IF 5.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Nano Materials Pub Date : 2026-10-09 Epub Date: 2026-09-30 DOI:10.1021/acsanm.6c03705

Tianjun Wu, Ping Shao, Jiabao Huang, Jiaqi Wan, Jiaqing Xu, Zhiqing Miao, Chengsi Hu, Ying Li, Chuanming Ma, Luocai Yi, Qingjun Chen

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引用次数: 0

Abstract

Hydrogen evolution reaction (HER) catalysts play a crucial role in efficient hydrogen production, yet commercial Pt/C catalysts remain limited by their high platinum loading, high cost, and insufficient durability caused by particle agglomeration and Pt loss during long-term operation. Here, we report a grain-boundary-rich CeO₂ nanorod-supported Pt catalyst with strong metal−support interaction (SMSI) for highly active and durable hydrogen evolution in acidic and alkaline media. Pt nanoparticles were anchored on CeO₂ nanorods rich in grain boundaries through a molten-salt-assisted strategy, forming stable Pt−O−Ce interfacial bonds. The constructed SMSI not only modulates the electronic structure of Pt but also accelerates reaction kinetics by promoting hydrogen spillover. As a result, the Pt−CeO₂-GB catalyst delivers excellent HER activity, requiring low overpotentials of only 15.9 mV and 27 mV to achieve 10 mA cm⁻² in 0.5 M H₂SO₄ and 1.0 M KOH, respectively, together with favorable long-term stability in both electrolytes. Mechanistic analysis reveals that the enhanced activity stems from an optimized Pt electronic structure and facilitated interfacial hydrogen spillover, while the improved durability is attributed to robust Pt−O−Ce bonding and strong anchoring of Pt nanoparticles on CeO₂-GBs. This work provides an effective strategy for designing low-Pt, cost-effective, and highly stable electrocatalysts for acidic and alkaline water electrolysis.

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熔盐辅助构建强金属-载体相互作用（SMSI）型Pt-CeO2酸碱性析氢电催化剂

析氢反应（HER）催化剂在高效制氢中起着至关重要的作用，但商用Pt/C催化剂的铂含量高、成本高、长期运行过程中因颗粒团聚和铂损失而导致的耐久性不足等问题仍然受到限制。在这里，我们报道了一种富含晶界的CeO2纳米棒负载Pt催化剂，具有强金属-负载相互作用（SMSI），在酸性和碱性介质中具有高活性和持久的析氢作用。通过熔盐辅助策略，将Pt纳米颗粒锚定在富含晶界的CeO2纳米棒上，形成稳定的Pt - O - Ce界面键。所构建的SMSI不仅可以调节Pt的电子结构，还可以通过促进氢溢出来加速反应动力学。因此，Pt−CeO2-GB催化剂具有优异的HER活性，在0.5 M H2SO4和1.0 M KOH中分别需要15.9 mV和27 mV的低过电位才能达到10 mA cm - 2，并且在两种电解质中都具有良好的长期稳定性。机理分析表明，活性的增强源于优化的Pt电子结构和促进的界面氢溢出，而耐久性的提高是由于Pt−O−Ce键和Pt纳米颗粒在ceo2 - gb上的强锚定。这项工作为设计低铂、低成本、高稳定性的酸、碱性电解电催化剂提供了有效的策略。

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

ACS Applied Nano Materials Multiple-

CiteScore

8.30

自引率

3.40%

发文量

1601

期刊介绍： ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.