Magnesium-based composite hydrogen storage material based on UiO-66 regulation and control as well as preparation method and application of magnesium-based composite hydrogen storage material

By preparing MgH2-x wt% UiO-66 composite hydrogen storage material and utilizing the catalytic effect of UiO-66, the problems of slow kinetics and high dehydrogenation temperature of magnesium-based hydrogen storage materials were solved, achieving lower absorption/dehydrogenation temperatures and faster kinetic performance, thus improving the stability of magnesium-based hydrogen storage materials.

CN122355230APending Publication Date: 2026-07-10NORTH CHINA ELECTRIC POWER UNIV
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Patent Information

Application Number
CN202610520818.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-20
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing magnesium-based hydrogen storage materials suffer from problems such as slow hydrogen storage kinetics and high dehydrogenation temperatures, which limit their large-scale application.

Method used

A MgH2-x wt% UiO-66 composite hydrogen storage material was prepared by mechanically ball milling and mixing MgH2 powder and UiO-66 powder. UiO-66, as a high-temperature resistant metal-organic framework material with an ultra-large specific surface area, plays a catalytic role. The synthesis was carried out by hydrothermal method and calcination method.

Benefits of technology

The introduction of UiO-66 significantly improves the overall performance of magnesium-based composite hydrogen storage materials by achieving lower absorption/desorption temperatures, faster kinetic performance, and excellent cycle stability.

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Abstract

The invention relates to a magnesium-based composite hydrogen storage material based on UiO-66 regulation and control and a preparation method and application thereof.The high-performance magnesium-based composite hydrogen storage material comprises MgH2 and UiO-66, MgH2 powder serves as a main phase, UiO-66 is a high-temperature-resistant metal organic framework (MOF) composed of Zr, O and C and having a large specific surface area and ultrahigh structural stability, and the UiO-66 is a high-temperature-resistant magnesium-based composite hydrogen storage material based on UiO-66 regulation and control. The catalyst is synthesized by a hydrothermal method and a calcination method. Compared with the prior art, the magnesium-based composite hydrogen storage material provided by the invention has the advantages that the dehydrogenation temperature range is 180-271 DEG C, the dehydrogenation activation energy is as low as 69.26 kJ / mol <-1 >, and the magnesium-based composite hydrogen storage material has rapid room-temperature hydrogen absorption capacity and excellent circulating hydrogen storage performance, and is of great significance in promoting the application of MgH2 and improving the hydrogen storage performance of the MgH2.
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