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研究论文

高效稳定的RuOx/Ti双功能电催化剂用于酸性析氢与析氧反应

谢颂恒a,b,c, 林怡然a,b,c, 袁亚龙b, 陈瑶b, 温珍海b,c, 黄钧衡*,a,b,c   

  1. a福州大学化学学院 福州 350108
    b中国科学院福建物质结构研究所、结构化学国家重点实验室、福建省氢能材料与技术重点实验室 福州 350002
    c中国科学院大学福建学院 福州 350002
  • 投稿日期:2026-01-14
  • 基金资助:
    国家重点研发计划项目(2022YFE0115900, 2023YFA1507101, 2021YFA1501500), 国家自然科学基金(No.22225902, U22A20436), 中国科学院海西研究院自主部署项目研究计划(No.CXZX-2022-GH04, CXZX-2023-JQ08), 福州市科技计划项目(2023-P-009)和福建省STS项目(2024T3016).

Efficient and Stable RuOx/Ti Bifunctional Electrocatalyst for Acidic Oxygen Evolution and Hydrogen Evolution Reactions

Xie Songhenga,b,c, Lin Yirana,b,c, Yuan Yalongb, Chen Yaob, Wen Zhenhaib,c, Huang Junheng*,a,b,c   

  1. aCollege of Chemistry, Fuzhou University, Fuzhou 350108, China
    bState Key Laboratory of Structural Chemistry, and Fujian Provincial Key Laboratory of Materials and Techniques toward Hydrogen Energy, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
    cFujian College, University of Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
  • Received:2026-01-14
  • Contact: *E-mail: huangjunheng@fjirsm.ac.cn
  • Supported by:
    National Key Research & Development Program of China (2022YFE0115900, 2023YFA1507101, 2021YFA1501500), the National Natural Science Foundation of China (No. 22225902, U22A20436), the Self-deployment Project Research Program of Haixi Institutes, Chinese Academy of Sciences (No. CXZX-2022-GH04, CXZX-2023-JQ08), Science and Technology Program of Fuzhou (2023-P-009), and the STS program of Fujian Province (2024T3016).

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质子交换膜电解水技术的规模化应用受到贵金属催化剂成本高昂和稳定性不足的双重制约。为此,本研究采用简易的喷涂‑氧化法,在耐酸腐蚀的钛毡基底上原位制备了具有超低钌载量的双功能催化剂RuOx/Ti。该催化剂中Ru基纳米颗粒均匀锚定于三维多孔钛骨架上,且表面富含氧空位。电化学测试表明,RuOx/Ti在酸性电解质中同时表现出优异的析氧反应和析氢反应活性。在10 mA cm-2电流密度下,析氧反应过电位仅为208 mV,析氢反应过电位低至36 mV。此外,该催化剂在持续的析氧反应和析氢反应测试中均展现出优异的长期稳定性,且法拉第效率均超过95%。进一步研究揭示,其优异的催化活性和稳定性源自丰富的氧空位对催化剂电子结构的调控,以及钌与钛基底之间的金属-载体强相互作用。该研究为低成本、高性能的酸性电解水催化剂的开发提供了新路径。

关键词: 电解水, Ru基催化剂, 析氧, 析氢, 酸性介质

The large-scale application of proton exchange membrane water electrolysis technology is constrained by the high cost and insufficient stability of noble metal catalysts. To address this, this study employed a simple spray‑oxidation method to in situ fabricate a bifunctional catalyst, RuOx/Ti, with an ultralow ruthenium loading on an acid‑resistant titanium felt substrate. In this catalyst, Ru‑based nanoparticles are uniformly anchored on the three‑dimensional porous titanium skeleton, and the surface is rich in oxygen vacancies. Electrochemical tests demonstrate that RuOx/Ti exhibits excellent activity for both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) in acidic electrolyte: at a current density of 10 mA cm-2, the overpotential is only 208 mV for OER and as low as 36 mV for HER. Furthermore, the catalyst shows outstanding long‑term stability during continuous OER and HER testing, with Faraday efficiencies exceeding 95% for both reactions. Further investigation reveals that its superior catalytic activity and stability originate from the modulation of the catalyst's electronic structure by abundant oxygen vacancies, as well as the strong metal‑support interaction between ruthenium and the titanium substrate. This study provides a new pathway for developing low‑cost, high‑performance bifunctional catalysts for acidic water electrolysis.

Key words: water electrolysis, Ru-based catalyst, oxygen evolution reaction, hydrogen evolution reaction, acidic electrolyte