A Ru@Zr x Hf y O2 / C electrocatalysts and their preparation methods

The Ru@ZrxHfyO2/C electrocatalyst was prepared by a solvothermal-impregnation-pyrolysis method, which solved the problems of high cost of Pt-based catalysts and easy agglomeration of Ru-based catalysts. It achieved a highly efficient and stable electrocatalytic hydrogen evolution reaction, reduced the amount of precious metals used and enhanced corrosion resistance, and is suitable for seawater electrolysis hydrogen production.

CN122303931APending Publication Date: 2026-06-30SHAANXI UNIV OF SCI & TECH
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHAANXI UNIV OF SCI & TECH
Filing Date
2026-04-16
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing Pt-based catalysts are expensive and scarce, while traditional Ru-based catalysts are prone to aggregation and structural damage, and are susceptible to interference from corrosive ions in seawater electrolysis, resulting in poor catalyst stability.

Method used

UiO-66 (ZrxHfy) metal-organic framework precursor was synthesized by a solvothermal method, and RuCl3 was loaded into the three-dimensional ordered porous structure of UiO-66 (ZrxHfy) by impregnation. Subsequently, high-temperature pyrolysis was carried out under an inert atmosphere to form Ru@ZrxHfyO2/C electrocatalyst. The strong electron-metal-support interaction (EMSI) between ZrxHfyO2 and Ru was used to improve catalytic activity and stability.

Benefits of technology

High dispersion of Ru nanoclusters on ZrxHfyO2 support was achieved, which improved the structural stability and active site utilization of the catalyst, significantly enhanced the electrocatalytic hydrogen evolution reaction performance under alkaline environment and simulated seawater conditions, reduced the amount of precious metals used, and enhanced the resistance to chloride ion corrosion.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122303931A_ABST
    Figure CN122303931A_ABST
Patent Text Reader

Abstract

This invention discloses a Ru@Zr x Hf y This invention relates to the field of electrocatalysts and its preparation method. The method includes weighing x mmol zirconium tetrachloride, y mmol hafnium tetrachloride, and 1 mmol terephthalic acid, dissolving them in 40–60 mL of DMF to form solution A; adding 3–5 mL of formic acid to solution A to form solution B and then sonicating the solution; subjecting solution B to a hydrothermal reaction to obtain product C; washing and centrifuging product C with a mixed solvent and then drying it under vacuum to obtain powder; dispersing 200 mg of the powder in 30–40 mL of methanol to form solution D; dispersing 0.1–0.3 mmol ruthenium trichloride powder in solution D and stirring to obtain solution E; washing and centrifuging solution E and then drying it under vacuum to obtain a precursor; heating the precursor to 700 °C and holding it for 2–3 h, then cooling it to 300 °C and allowing it to cool naturally to room temperature to obtain Ru@Zr. x Hf y O2 / C electrocatalyst. It solves the problems of high cost of Pt-based catalysts, easy agglomeration and structural damage of traditional Ru-based catalysts, and poor stability due to interference from corrosive ions in seawater electrolysis.
Need to check novelty before this filing date? Find Prior Art