雍辉,王帅,侯卫宵,马江微,崔燕,王志成

• 1:太原科技大学材料科学与工程学院

摘要(Abstract)：

通过真空感应熔炼和球磨协同技术成功制备了纳米晶/非晶结构的稀土-镁基储氢合金，并通过XRD,TEM,PCT分析方法研究了球磨时间对其微观结构与储氢性能的影响。结果表明，随着球磨时间的增加，合金种纳米晶/非晶相逐渐增加，且等温平台压升高，这导致了合金具有优秀的放氢动力学性能，其中球磨15 h的合金2 min内便可释放5.5 wt%的氢气。然而，延长球磨时间不利吸氢动力学性能的改善，主要是因为非晶阻碍了氢的扩散。

关键词(KeyWords)： 储氢材料;稀土镁基;动力学;纳米晶/非晶;球磨技术

Abstract:

Keywords:

基金项目(Foundation): 太原科技大学博士科研启动基金(20202040)

作者(Author): 雍辉,王帅,侯卫宵,马江微,崔燕,王志成

参考文献(References)：

• [1] JENA P.Materials for hydrogen storage past,present,and future[J].Int J Phys Chem Lett,2011,2:206-211.
• [2] RUSMAN NAA,DAHARI M.A review on the current progress of metal hydrides material for solid-state hydrogen storage applications[J].Int.J.Hydrogen Energy 2016,41:12108-12126.
• [3] SHAO H,HE L,LIN H,et al.Progress and trends in Mg-based materials for energy storage research:A Review[J].Energy Technology,2018,6:445-458.
• [4] YONG H,WEI X,WANG Y H,et al.Phase evolution,thermodynamics and kinetics property of transition metal(TM=Zr,Ti,V)catalyzed Mg-Ce-Y-Ni hydrogen storage alloys[J].Journal of Physics and Chemistry of Solids,2020,144:109506.
• [5] ZHANG Y H,LI Y Q,SHANG H W,et al.Hydrogen storage properties of nanocrystalline and amorphous Pr-Mg-Ni-based alloys synthesized by mechanical milling [J].Int J Hydrogen Energy 2017,35:22379-22387.
• [6] BU WG,ZHANG W,GAO J L,et al.Improved hydrogen storage kinetics of nanocrystalline and amorphous Pr-Mg-Ni-based PrMg12-type alloys synthesized by mechanical milling [J].Int J Hydrogen Energy 2017,42:18452-18464.
• [7] 翟婷婷，韩忠刚，袁泽明，等.球磨时间对TiFe系合金微观结构和电化学性能的影响[J/OL].储能科学与技术，https://kns.cnki.net/kcms/detail/10.1076.tk.20201014.1601.002.html.[2020-10-14].
• [8] 董小平，陈亚芳，苏建文，等.储氢合金中氢致非晶化的研究进展[J].材料导报，2020,34:15110-15115.
• [9] 胡蜂，蔡颖，李永志，等.非晶纳米晶 Mg-Ni 型复合储氢合金微观结构及电化学性能[J].内蒙古科技大学学报，2018,37:113-118.
• [10] YONG H,GUO S H,YUAN Z M,et al.Catalytic effect of in situ formed Mg2Ni and REHx(RE:Ce and Y)on thermodynamics and kinetics of Mg-RE-Ni hydrogen storage alloy [J].Renewable Energy,2020,157:828-839.
• [11] YONG H,GUO S H,YUAN Z M,et al.Phase evolution,hydrogen storage thermodynamics and kinetics of ternary Mg90Ce5Sm5 alloy [J].Journal of Rare Earths,2020,38:633-641.