Dislocation type ruthenium dioxide catalyst as well as synthesis method and application thereof

By introducing dual ligands to coordinate with Ru ions during the preparation of RuO2 catalyst, dislocation-type ruthenium dioxide nanoparticles are formed, solving the problem of balancing activity and stability of RuO2 catalyst in acidic solutions. This achieves high efficiency and stability in acidic water electrolysis, making it suitable for proton exchange membrane water electrolyzers.

CN121137656AActive Publication Date: 2025-12-16HUAZHONG UNIV OF SCI & TECH
View PDF 3 Cites 0 Cited by

Patent Information

Application Number
CN202511217333.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-28
Publication Date
2025-12-16
Estimated Expiration
2045-08-28

AI Technical Summary

Technical Problem

Existing RuO2 catalysts have difficulty balancing activity and stability in acidic solutions, which limits their large-scale application in proton exchange membrane water electrolyzers.

Method used

By using dual ligands to coordinate with Ru ions, non-uniform stress is introduced during the preparation process to induce dislocation formation, thereby preparing dislocation-type ruthenium dioxide nanoparticles and improving the oxygen evolution performance and stability of the catalyst in acidic water electrolysis.

Benefits of technology

The prepared dislocation-type ruthenium dioxide catalyst exhibits excellent oxygen evolution reaction performance in acidic water electrolysis and maintains good stability, making it suitable for practical applications in proton exchange membrane water electrolyzers.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121137656A_ABST
    Figure CN121137656A_ABST
Patent Text Reader

Abstract

The invention belongs to the field of nano materials, and discloses a dislocation type ruthenium dioxide catalyst as well as a synthesis method and application thereof. The synthesis method of the dislocation type ruthenium dioxide catalyst comprises the following steps: S1, dissolving 4, 4 '-dipyridyl and 2, 5-thiophenedicarboxylic acid in an alkaline solution with the pH value of 10-13, and adding a surfactant to obtain a double-ligand solution; under a stirring condition, adding a CoCl2 solution into the double-ligand solution for reaction, and then washing and drying to obtain a Co-MOF precursor; s2, dissolving a ruthenium source and the Co-MOF precursor in deionized water, carrying out ion exchange, washing, and drying to obtain a Ru-MOF precursor of cross-linked double ligands; and then the Ru-MOF precursor of the cross-linked double ligands is placed in the air atmosphere to be annealed, and the dislocation type ruthenium dioxide nano-particles are obtained. The method disclosed by the invention is mild and simple in reaction condition, the anion exchange reaction is carried out at room temperature, the annealing condition is mild, and the prepared RuO2 has excellent acidic electrolyzed water oxygen evolution catalytic performance.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Long-life noble metal oxide oxygen evolution reaction electrocatalyst and preparation method and application thereof

    CN114959772A

  • Preparation method and application of defect-rich ruthenium dioxide aerogel catalyst

    CN117699870A

  • Preparation method and application of defect-rich crystalline RuO2 porous material

    CN119118228A