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

doi:10.6023/A26010017

化学学报 ›› 2026, Vol. 84 ›› Issue (6): 849-858.DOI: 10.6023/A26010017 上一篇下一篇

研究论文

高效稳定的RuO_x/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^,^*()

^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 发布日期:2026-04-27
基金资助:
国家重点研发计划项目(2022YFE0115900); 国家重点研发计划项目(2023YFA1507101); 国家重点研发计划项目(2021YFA1501500); 国家自然科学基金(22225902); 国家自然科学基金(U22A20436); 中国科学院海西研究院自主部署项目研究计划(CXZX-2022-GH04); 中国科学院海西研究院自主部署项目研究计划(CXZX-2023-JQ08); 福州市科技计划项目(2023-P-009); 福建省STS 项目(2024T3016)

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

Songheng Xie^a^,^b^,^c, Yiran Lin^a^,^b^,^c, Yalong Yuan^b, Yao Chen^b, Zhenhai Wen^b^,^c, Junheng Huang^a^,^b^,^c^,^*()

^a College of Chemistry, Fuzhou University, Fuzhou 350108, China
^b State 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
^c Fujian College, University of Chinese Academy of Sciences, Fuzhou, Fujian 350002, China

Received:2026-01-14 Published:2026-04-27
Contact: *E-mail: huangjunheng@fjirsm.ac.cn
Supported by:
National Key Research & Development Program of China(2022YFE0115900); National Key Research & Development Program of China(2023YFA1507101); National Key Research & Development Program of China(2021YFA1501500); National Natural Science Foundation of China(22225902); National Natural Science Foundation of China(U22A20436); Self-deployment Project Research Program of Haixi Institutes, Chinese Academy of Sciences(CXZX-2022-GH04); Self-deployment Project Research Program of Haixi Institutes, Chinese Academy of Sciences(CXZX-2023-JQ08); Science and Technology Program of Fuzhou(2023-P-009); STS program of Fujian Province(2024T3016)

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1. Supporting Information-A26010017.pdf(5775KB)

摘要/Abstract

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RuO_x/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, RuO_x/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, RuO_x/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 RuO_x/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

引用此文

谢颂恒, 林怡然, 袁亚龙, 陈瑶, 温珍海, 黄钧衡. 高效稳定的RuO_x/Ti双功能电催化剂用于酸性析氢与析氧反应[J]. 化学学报, 2026, 84(6): 849-858.

Songheng Xie, Yiran Lin, Yalong Yuan, Yao Chen, Zhenhai Wen, Junheng Huang. Efficient and Stable RuO_x/Ti Bifunctional Electrocatalyst for Acidic Oxygen Evolution and Hydrogen Evolution Reactions[J]. Acta Chimica Sinica, 2026, 84(6): 849-858.

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图/表 5

图1. (a) RuOx/Ti的合成示意图. (b)不同样品的XRD图谱. (c, d)不同分辨率下RuOx/Ti-450的SEM图像. (e, f) RuOx/Ti-450的TEM和HRTEM图像, (g)为(f)方框区域的逆傅里叶变换图. (h) RuOx/Ti-450的TEM-EDS元素映射图像

Figure 1. (a) Schematic diagram of RuOx/Ti synthesis. (b) XRD patterns of all samples. (c, d) SEM images of RuOx/Ti-450 at different magnifications. (e, f) TEM image and HRTEM image of RuOx/Ti-450, (g) Inverse fast Fourier transform (IFFT) image corresponding to the framed region in (f). (h) TEM-EDS elemental mapping images of RuOx/Ti-450

图2. 不同样品的(a)拉曼图谱, (b) XPS全谱及(c) Ti 2p和(d) O 1s的高分辨XPS光谱

Figure 2. (a) Raman spectra and (b) survey XPS spectrum of all samples. High-resolution XPS spectra of (c) Ti 2p and (d) O 1s for all samples

图3. 不同催化剂(a)在0.5 mol•L-1 H2SO4中的LSV曲线, (b)在10、100 mA•cm-2下的过电位, (c) Tafel曲线, (d)在1.5 V vs. RHE时的EIS图谱, (e)电化学双层电容值, (f)在1.53 V vs. RHE时的质量活性(左)和经过电化学活性面积均一化后的电流密度值(右). (g) RuOx/Ti-450在不同电位下氧气的法拉第效率. (h)在计时电位法测试过程中不同催化剂的稳定性

Figure 3. (a) LSV curves of all catalysts in 0.5 mol•L-1 H2SO4 electrolyte, (b) Overpotential at current densities of 10 and 100 mA•cm-2, (c) Tafel plots, (d) EIS Nyquist plots at 1.5 V vs. RHE, (e) ECSA values and (f) mass activity (left) and JECSA (right) at 1.53 V vs. RHE. (g) Oxygen Faradaic efficiency of RuOx/Ti-450 at different potentials. (h) Stability of different catalysts during chronopotentiometry tests

图4. 不同催化剂(a)在0.5 mol•L-1 H2SO4中的LSV曲线, (b)在10、100 mA•cm-2下的过电位值, (c) Tafel曲线, (d) EIS图谱, 插图为图中灰色区域的放大图. (e)不同催化剂在－0.2 V vs. RHE时的质量活性(左)和经过电化学活性面积均一化后的电流密度值(右). (f) RuOx/Ti-450在不同电位下的氢气法拉第效率. (g)不同催化剂的性能对比图. (h) RuOx/Ti-450和RuOx/Ti-500在0.5 mol•L-1 H2SO4电解液中－10 mA•cm-2下的稳定性

Figure 4. (a) LSV curves of all catalysts in 0.5 mol•L-1 H2SO4 electrolyte, (b) Overpotential at current densities of 10 and 100 mA•cm-2, (c) Tafel plots, (d) EIS spectrum. The inset shows a magnified view of the gray region, (e) mass activity (left) and JECSA (right) at －0.2 V vs. RHE. (f) Hydrogen Faradaic efficiency of RuOx/Ti-450 at different potentials. (g) Performance comparison diagram of all catalysts. (h) Stability of RuOx/Ti-450 and RuOx/Ti-500 at －10 mA•cm-2 in 0.5 mol•L-1 H2SO4

图5. RuOx/Ti-450在OER和HER稳定性测试前后的表征. (a) XRD图谱. (b) XPS总谱. (c) Ti 2p和Ru 3p3/2的高分辨图谱. (d) O 1s的高分辨图谱

Figure 5. Characterization of RuOx/Ti-450 before and after OER and HER stability tests. (a) XRD spectrum. (b) XPS spectrum. (c) High-resolution spectrum of Ti 2p and Ru 3p3/2. (d) High-resolution spectrum of O 1s

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高效稳定的RuO_x/Ti双功能电催化剂用于酸性析氢与析氧反应

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

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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

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

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高效稳定的RuO_x/Ti双功能电催化剂用于酸性析氢与析氧反应

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