• 专利标题:   Preparing magnesium-aluminum yttrium/graphene hydrogen storage composite material comprises e.g. adding graphite oxide into yttrium oxalate solution, freeze-drying, reheating, heating and mixing with magnesium powder and aluminum powder.
  • 专利号:   CN110697652-A
  • 发明人:   CAI X, XU Y, LIU M, CAO B, LIU J
  • 专利权人:   UNIV YULIN
  • 国际专利分类:   C01B003/00
  • 专利详细信息:   CN110697652-A 17 Jan 2020 C01B-003/00 202009 Pages: 7 Chinese
  • 申请详细信息:   CN110697652-A CN11144343 20 Nov 2019
  • 优先权号:   CN11144343

▎ 摘  要

NOVELTY - Preparing magnesium-aluminum yttrium/graphene hydrogen storage composite material comprises (i) preparing 2.03 mol/l yttrium oxalate solution, and taking 10-15 g graphite oxide, 75-90 g magnesium powder and 5-10 g aluminum powder per 0.01 l yttrium oxalate solution, (ii) adding graphite oxide into yttrium oxalate solution, and mixing the mixture to obtain mixed solution-A, (iii) freeze-drying the mixed solution-A into a solid state, reheating to sublimate water and oxalic acid to obtain yttrium(3+)/graphite oxide composite, heating the yttrium(3+)/graphite oxide composite to reduce graphite oxide to graphene and reducing yttrium(3+) to yttrium simple substance to obtain yttrium/graphene composite, and (iv) mixing the yttrium/graphene composite with magnesium powder and aluminum powder. USE - The method is useful for preparing magnesium-aluminum yttrium/graphene hydrogen storage composite material. ADVANTAGE - The method: can reduce binding energy of graphene and hydrogen atoms, improves hydrogen storage performance of graphene, reduces activation energy for hydrogen collection, accelerates hydrogen collection and release rate of the composite material and improves hydrogen storage kinetics.