基于氢化燃烧合成镁铝储氢合金的氢致Al*调控储氢热力学及动力学性能及其机理的研究

在镁铝储氢合金氢化燃烧合成（Hydriding Combustion Synthesis，HCS）降温吸氢原位生成氢致Al*显著改善镁基储氢合金储氢动力学和热力学性能的预研基础上，本项目提出“基于氢化燃烧合成镁铝储氢合金的氢致Al*调控储氢热力学及动力学性能及其机理的研究”新课题。通过系统研究氢致Al*影响HCS制备镁铝储氢合金结构演变的过程，包括：晶体结构、表面结构和电子结构，揭示氢致Al*改善HCS制备镁铝储氢合金储氢热力学及动力学性能的机制，旨在阐明构效关系，设计合金结构，优化HCS工艺，调控储氢性能，取得开拓性成果，对于开发面向移动氢源技术的高容量高活性镁基储氢材料精准制备新技术，推动我国氢能源开发利用的实用化进程，具有重要的理论意义和实用价值。

Based on our previous research results that the thermodynamics and kinetics of hydrogen storage of Mg-based alloys prepared by the process of hydriding combustion synthesis (HCS) were improved obviously by the hydrogen induced Al formed in situ in the cooling hydriding reaction during HCS, this program proposes a new project “Mechanism and the controlling of hydrogen storage thermodynamics and kinetics of Mg-based alloys by the hydrogen-induced Al formed in situ in hydriding combustion synthesis”. This project will study how the structure transformations, including crystal structure, surface structure and election structure, were affected by the hydrogen induced Al during the HCS of Mg-Al hydrogen storage alloys and will reveal the mechanism of improving hydrogen storage thermodynamics and kinetics of Mg-based alloys by the hydrogen-induced Al. This project aims to explain the relationships between structures and properties, to design the microstructure of alloys, to optimize the HCS process and to develop the new technology of preparing Mg-based hydrogen storage alloys precisely with high capacity and high activity for the application of hydrogen supply on-board. This project will be very significance in views of theoretical and practical to promote the development and utilization process of hydrogen energy in our country.