Preparation method of an organic-coated core-shell nanocomposite hydrogen storage material
A technology of nanocomposite and hydrogen storage materials, which is applied in the field of preparation of organic-coated core-shell nanocomposite hydrogen storage materials, to achieve the effects of suppressing poisoning, reducing the difficulty of activation, and improving the thermodynamic properties of hydrogen absorption and desorption
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Embodiment 1
[0025] The Mg-Ni-La based composite hydrogen storage alloy powder of the present invention is made of Mg-Ni-La alloy, CNTs and TiF 3 Catalyst composition, Mg-Ni alloy: CNTs: TiF 3 =8:1:1, the ratio is a weight ratio.
[0026] In the alloy belt, in the Mg-Ni-La alloy, the magnesium content is 90 at.%, the lanthanum content is 0-10 at.%, and the rest is nickel. The chemical formula of the alloy is Mg2Ni 1-x La x , 0≤x≤0.5, x=0 in this embodiment.
[0027] The invention also proposes a PMMA@CNT-TiF with excellent preparation, activation and cycle characteristics 3 @Mg-Ni-La three-layer core-shell nanocomposite hydrogen storage material, the specific process is:
[0028] Step 1, alloy ingredients: select metal magnesium block and nickel powder with purity ≥ 99.8%, press Mg 2 Ni 0.9 La 0.1 Stoichiometric ratio weighing, considering burning loss, magnesium added 3-5wt.% burning loss. In this embodiment, the addition amount of magnesium for burning loss is 3wt.%. The nickel ...
Embodiment 2
[0033] The Mg-Ni-La based composite hydrogen storage alloy powder of the present invention is made of Mg-Ni-La alloy, CNTs and TiF 3 Catalyst composition, Mg-Ni alloy: CNTs: TiF 3 =8:1:1, the ratio is a weight ratio.
[0034] In the alloy strip, in the Mg-Ni-La alloy, the magnesium content is 90 at.%, the lanthanum content is 0-10 at.%, and the rest is nickel. The chemical formula of the alloy is Mg 2 Ni 1-x La x, 0≤x≤0.5, x=0.1 in this embodiment.
[0035] The invention also proposes a PMMA@CNT-TiF with excellent preparation, activation and cycle characteristics 3 @Mg-Ni-La three-layer core-shell nanocomposite hydrogen storage material, the specific process is:
[0036] Step 1, alloy ingredients: select metal magnesium block and nickel powder with purity ≥ 99.8%, press Mg 2 Ni 0.9 La 0.1 Stoichiometric ratio weighing, considering burning loss, magnesium added 3-5wt.% burning loss. In this embodiment, the addition amount of magnesium for burning loss is 4wt.%. The n...
Embodiment 3
[0041] The Mg-Ni-La based composite hydrogen storage alloy powder of the present invention is made of Mg-Ni-La alloy, CNTs and TiF 3 Catalyst composition, Mg-Ni alloy: CNTs: TiF 3 =8:1:1, the ratio is a weight ratio.
[0042] In the alloy strip, in the Mg-Ni-La alloy, the magnesium content is 90 at.%, the lanthanum content is 0-10 at.%, and the rest is nickel. The chemical formula of the alloy is Mg 2 Ni 1-x La x , 0≤x≤0.5, x=0.3 in this embodiment.
[0043] The invention also proposes a PMMA@CNT-TiF with excellent preparation, activation and cycle characteristics 3 @Mg-Ni-La three-layer core-shell nanocomposite hydrogen storage material, the specific process is:
[0044] Step 1, alloy ingredients: select metal magnesium block and nickel powder with purity ≥ 99.8%, press Mg 2 Ni 0.7 La 0.3 Stoichiometric ratio weighing, considering burning loss, magnesium added 3-5wt.% burning loss. In this embodiment, the addition amount of magnesium for burning loss is 5wt.%. The ...
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