一种基于细化球磨高硬度掺杂剂的镁基储氢材料及其制备方法
By refining the ball milling process of V80Ti8Cr12 alloy and MgH2 composite, the problem of difficult crushing in the existing technology was solved, and the preparation of high-performance magnesium-based composite hydrogen storage materials was realized, which improved the hydrogen absorption capacity and reduced the hydrogen release temperature.
CN117604349BActive Publication Date: 2026-07-17GUANGDONG GUOYAN SCI & TECH RES CENT CO LTD
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Patent Information
- Application Number
- CN202311613771.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-29
- Publication Date
- 2026-07-17
- Estimated Expiration
- 2043-11-29
AI Technical Summary
Technical Problem
Existing technologies make it difficult to crush V80Ti8Cr12 alloy and combine it with MgH2, which limits the performance improvement of magnesium-based composite hydrogen storage materials.
Method used
V80Ti8Cr12 alloy was processed by a fine ball milling method. Small flake-shaped V-Ti-Cr powder of 1-5μm was prepared by high-frequency magnetic levitation melting, machining slicing and alternating forward and reverse ball milling. The powder was then ball-milled with MgH2 to form MgH2-V-Ti-Cr composite material.
Benefits of technology
This improved the hydrogen absorption and release capacity of magnesium-based composite hydrogen storage materials, reduced the hydrogen release temperature, and significantly enhanced their kinetic performance.
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Abstract
本发明涉及固态复合储氢材料技术领域，具体公开了一种基于细化球磨高硬度掺杂剂的镁基储氢材料及其制备方法，由高硬度掺杂剂和MgH2复合球磨制得，复合储氢材料的尺寸为1‑5μm，呈小片状分散分布；其中，所述MgH2为基体材料，高硬度掺杂剂的化学式为V80T i8Cr12，简称V‑T i‑Cr合金；V80T i8Cr12相和MgH2相分布均匀；所述V‑T i‑Cr合金的硬度为235‑240HV，必须进行细化球磨；包含MgH2相和V80T i8Cr12相，MgH2相的含量为88‑92％，V80T i8Cr12相的含量为8‑12％。其制备方法包括以下步骤：1，高硬度V‑T i‑Cr合金的熔炼；2，V‑T i‑Cr铸锭的细化球磨；3，镁基储氢材料的制备，本发明克服了同时具有高硬度和高塑性合金的不能破碎问题，实现了高性能储氢材料的制备。
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