Hydrogen storage material as well as preparation method and application thereof

By preparing VxMo1-xN type dual transition metal nitride hydrogen storage materials, the problems of high capacity, rapid absorption/desorption and long cycle stability of existing vehicle-mounted hydrogen storage materials have been solved, achieving efficient and safe hydrogen storage performance.

CN122079069APending Publication Date: 2026-05-26BEIHANG UNIV
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Patent Information

Application Number
CN202610442447.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-03
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing hydrogen storage materials are insufficient to meet the requirements of high capacity, near-ambient temperature operation, long cycle time, rapid absorption/desorption, and low cost for vehicle applications, especially in terms of capacity, cycle stability, rate, and operating temperature.

Method used

Using VxMo1-xN type dual transition metal nitrides as hydrogen storage materials, V2O5, MoO3 and Na2MoO4•2H2O were mixed by ball milling, followed by calcination under NH3 protective atmosphere and stirring in hydrochloric acid to prepare V0.2Mo0.8N materials with a 10-15 layer structure.

Benefits of technology

It achieves high hydrogen storage capacity (e.g., 9.26 wt% at 109.5 bar), rapid hydrogen absorption/release (e.g., 5.6 wt% absorbed within 30 seconds at 150°C), and excellent cycle stability (no capacity loss after 500 cycles), making it suitable for on-board solid-state hydrogen storage.

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Abstract

The invention relates to the field of hydrogen storage materials, in particular to a hydrogen storage material and a preparation method and application thereof. The hydrogen storage material VxMo1-xN provided by the invention is used as a solid hydrogen storage material, is high in hydrogen storage capacity, high in hydrogen storage rate and high in hydrogen storage stability, and has remarkable advantages in the field of vehicle-mounted solid hydrogen storage. Experiments show that by taking V0. 2Mo0. 8N as an example, 9.26 wt% of hydrogen can be reversibly absorbed / released within several minutes at 109.5 bar and 150 DEG C. And under the hydrogen pressure of 73.6 bar, 5.6 wt% of hydrogen can be absorbed within 30 seconds. More importantly, the V0. 2Mo0. 8N material shows excellent cycle stability, and has no capacity loss in 500 times of super-long cycles. At present, the material is not applied to the field of solid hydrogen storage by people, and material innovation and solid hydrogen storage performance are outstanding.
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