| 黄曼君,唐鑫,刘汉真.化学通报,2026,89(6):751-757. |
| 吸附Ru的烧绿石型金属氧化物Co2Sb2O7结构及其酸性OER性能研究 |
| Structure and Acidic OER Performance of Ruthenium-Adsorbed Pyrochlore Metal Oxide Co2Sb2O7 |
| 投稿时间：2026-01-28 修订日期：2026-02-28 |
| DOI： |
| 中文关键词: 电催化剂 析氧反应 烧绿石结构 氢能 |
| 英文关键词:Electrocatalysts Oxygen Evolution Reaction (OER) Pyrochlore Structure Hydrogen Energy |
| 基金项目: |
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| 中文摘要: |
| 本研究采用固相烧结法设计并合成了一种Ru元素吸附改性的烧绿石型金属氧化物Co2Sb2O7(Ru@CSO)催化剂。为系统探究该材料的综合性能，对其组成成分、形貌结构及电化学性能开展了全面表征与测试分析。测试结果表明，Ru@CSO在酸性介质中展现出优异的电催化析氧反应(OER)性能，仅需163 mV的过电位即可达到10 mA cm-2的电流密度。其OER催化活性的显著提升归因于材料具备较高的氧空位含量和拥有更大的电化学活性表面积，可充分暴露催化反应活性位点，有效优化了酸性条件下的OER动力学过程。此外，Ru@CSO具有优异的稳定性，在1 mA cm-2的电流密度下保持稳定的电位长达90 h。本研究通过Ru元素吸附改性这一简易合成策略，为高性能酸性OER催化剂的设计与开发提供了全新思路和参考方向。 |
| 英文摘要: |
| A Ru-adsorbed modified pyrochlore metal oxide Co2Sb2O7 (Ru@CSO) catalyst was designed and synthesized by solid-state sintering. To systematically investigate its comprehensive properties, thorough characterization and analysis were performed on its composition, morphology, structure, and electrochemical performance. Results show that Ru@CSO exhibits excellent electrocatalytic oxygen evolution reaction (OER) performance in acidic media, reaching a current density of 10 mA cm-2 with only 163 mV overpotential. Its enhanced OER activity is attributed to high oxygen vacancy content and larger electrochemically active surface area, which fully expose active sites and optimize acidic OER kinetics effectively. Moreover, Ru@CSO has outstanding stability, maintaining a stable potential for 90 h at 1 mA cm-2. This study provides a new idea and reference for designing high-performance acidic OER catalysts via the simple strategy of Ru adsorption modification. |
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