CN105274411A - Magnesium, aluminum, boron and nickel-based hydrogen storage material and preparing method thereof - Google Patents
Magnesium, aluminum, boron and nickel-based hydrogen storage material and preparing method thereof Download PDFInfo
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- CN105274411A CN105274411A CN201510687910.6A CN201510687910A CN105274411A CN 105274411 A CN105274411 A CN 105274411A CN 201510687910 A CN201510687910 A CN 201510687910A CN 105274411 A CN105274411 A CN 105274411A
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Abstract
The invention discloses a magnesium, aluminum, boron and nickel-based hydrogen storage material. The chemical component of the magnesium, aluminum, boron and nickel-based hydrogen storage material is xAl-yB-zNi-(1-x-y-z)Mg, wherein the mass fraction, by weight, of x is larger than or equal to 1% and smaller than or equal to 5%, the mass fraction, by weight, of y is larger than or equal to 0.5% and smaller than or equal to 1%, and the mass fraction, by weight, of z is larger than or equal to 5% and smaller than or equal to 20%. A preparing method for the hydrogen storage material comprises the steps that magnesium powder, nickel powder, boron powder and aluminum powder are evenly mixed according to the composition and pressed into a cylinder with the diameter of 10 mm and the height of 8 mm; and then a cubic press is used for heat preservation and pressure maintaining for 30-60 min at 4-6 GPa and 1200-1800 DEG C; and liquid nitrogen is immediately used for cooling an alloy, and the magnesium, aluminum, boron and nickel-based hydrogen storage material is obtained. The preparing method is simple and short in production period, and the prepared hydrogen storage alloy has the good performance of being short in activation period, high in hydrogen absorbing and desorbing rate and the like.
Description
Technical field
The present invention relates to a kind of hydrogen storage material and preparation method thereof.
Background technology
The burning of conventional fossil fuel causes environmental problem to be increasingly sharpened, and the energy developing Novel pollution-free becomes the matter of great urgency.Hydrogen Energy has totally, energy is high, can not produce the lot of advantages such as secondary pollution, and therefore the exploitation of hydrogen energy source causes the great interest of people.Magnesium microalloying is rising hydrogen storage material, and it has the little (1.74g/cm of density
3), capacity high (7.6wt.%), aboundresources, the advantage such as cheap.But the suction of magnesium/put hydrogen condition is often harsher, and need to reach more than 300 degree, kinetics is slow, activation difficulty.
Application number be 201410841643.9 Chinese invention patent application disclose a kind of preparation method of nano level Mg-Y-Ni hydrogen storing alloy powder, mainly Mg, Y and Ni are added in the crucible in high-temperature evaporator, nitrogen is filled with after vacuumizing, open plasma gun generation plasma transferred arc to melt heating raw materials, aluminium alloy starts evaporation and enters in particle controller with nitrogen, and cooling particulate is transported in gas-solid separator and obtains shape is spherical nano level Mg-Y-Ni hydrogen storing alloy powder.Although the hydrogen storage alloy particle that the method is prepared is little, inhale/put hydrogen fast.But preparation method is complicated, the Alloyapplication condition obtained is restricted, and is easily oxidized.
The patent No. be 201010525735.8 Chinese invention patent disclose a kind of preparation method of Mg-RE-Ni alloy hydrogen storage material; be Mg, RE and Ni powder is mixed, grinding is even; under argon shield, compressing tablet is carried out after obtaining mixture; and seal with Graphite Powder 99; carry out in tube furnace or retort furnace powder sinteredly obtaining sintered alloy; alloy powder is carried out intermittent type ball milling under argon shield, obtains the Mg-based composite hydrogen storage material that structure is nanocrystalline/amorphous.Although the alloy compositions of the method preparation is easy to control, preparation cycle is long, is unfavorable for scale operation.
The patent No. be 201210503872.0 Chinese invention patent disclose the preparation method of a kind of magnesium silver hydrogen storage material, first by induction melting magnesium silver alloys, molten alloy wears into 100 object powder after annealing in glove box, adds the TiF of 5wt.% in the powder
3after in ball grinder ball milling within 30 hours, obtain magnesium silver hydrogen storage material.Although the reasonable offer process of the method preparation is simple, easy to control, capacity is high, cost is expensive, and raw material is many.
Summary of the invention:
The object of the present invention is to provide magnalium boron nickel based hydrogen storage material that a kind of method is simple, the behavior of suction/hydrogen desorption kinetics is good and preparation method thereof.
The chemical composition of magnalium boron nickel based hydrogen storage material of the present invention is: xAl-yB-zNi-(1-x-y-z) Mg, and wherein x, y, z are massfraction (wt.%), 1%≤x≤5%, 0.5%≤y≤1%, 5%≤z≤20%.
Preparation method of the present invention is as follows:
First magnesium powder, nickel powder, boron powder, aluminium powder are mixed according to component, being pressed into diameter is the high cylinder for 8mm of 10mm, wrap up with tantalum, then use six-plane piercer at 4 ~ 6GPa, at 1200 ~ 1800 DEG C after heat-insulation pressure keeping 30 ~ 60min, after using liquid nitrogen to cool this alloy fast immediately, obtain magnalium boron nickel based hydrogen storage material.
The present invention compared with prior art tool has the following advantages:
1, method is simple, adopts high-pressure process, makes magnesium and nickel in alloy form Mg
6ni second-phase is deposited on crystal boundary and occurs secondary dendrite, reduces the distance between crystalline substance/phase boundary, shortens the distance of hydrogen trap.
2, add aluminium to contribute to increasing suction hydrogen total amount, boron is conducive to reducing hydrogen discharging temperature as catalyzer.
3, obtained hydrogen storage material has that hydrogen-storage amount is large, good cycle, hydrogen discharging temperature are low, inhales the advantage that hydrogen desorption kinetics performance is good.
4, abundant raw material, cheap, with short production cycle.
Accompanying drawing explanation
Fig. 1 is the optical texture figure of the 74Mg-5Al-1B-20Ni that the embodiment of the present invention 1 obtains.
Fig. 2 is the XRD figure of the 86Mg-3Al-1B-10Ni that the embodiment of the present invention 2 obtains.
Fig. 3 is the suction hydrogen kinetics figure of 93.5Mg-1Al-0.5B-5Ni at 300 DEG C that the embodiment of the present invention 3 obtains.
Fig. 4 is the hydrogen desorption kinetics figure of 93.5Mg-1Al-0.5B-5Ni at 300 DEG C that the embodiment of the present invention 3 obtains.
Embodiment:
Embodiment 1
Get 2.96gMg powder, after 0.2gAl powder, 0.04gB powder, 0.8gNi powder mix, being pressed into diameter is the high cylinder for 8mm of 10mm, wrap up with tantalum, then use six-plane piercer at 4GPa, at 1200 DEG C after heat-insulation pressure keeping 30min, use liquid nitrogen to cool this alloy fast immediately to close, obtain magnalium boron nickel based hydrogen storage material.As shown in Figure 1, can find out that sample exists a large amount of abundant secondary dendrite, the diffusion for hydrogen atom provides more passage.
Embodiment 2
Get 3.44gMg powder, after 0.12gAl powder, 0.04gB powder, 0.4gNi powder mix, being pressed into diameter is the high cylinder for 8mm of 10mm, wrap up with tantalum, then use six-plane piercer at 6GPa, at 1800 DEG C after heat-insulation pressure keeping 60min, use liquid nitrogen to cool this alloy fast immediately to close, obtain magnalium boron nickel based hydrogen storage material.As shown in Figure 2, that can find out sample consists of Mg
6ni+Mg phase.
Embodiment 3
Get 3.74gMg powder, after 0.04gAl powder, 0.02gB powder, 0.2gNi powder mix, being pressed into diameter is the high cylinder for 8mm of 10mm, wrap up with tantalum, then use six-plane piercer at 4GPa, at 1400 DEG C after heat-insulation pressure keeping 45min, use liquid nitrogen to cool this alloy fast immediately to close, obtain magnalium boron nickel based hydrogen storage material.As shown in Figure 3, can find out through sample at 300 DEG C in 3000S hydrogen－sucking amount reach 3.8%, as shown in Figure 4, the hydrogen desorption kinetics of sample at 300 DEG C in 300S can be found out.
Claims (2)
1. a magnalium boron nickel based hydrogen storage material, is characterized in that: its chemical composition is xAl-yB-zNi-(1-x-y-z) Mg, wherein x, y, z massfraction (wt.%), 1%≤x≤5%, 0.5%≤y≤1%, 5%≤z≤20%.
2. the preparation method of magnalium boron nickel based hydrogen storage material according to claim 1, it is characterized in that: first magnesium powder, nickel powder, boron powder, aluminium powder are mixed according to component, being pressed into diameter is the high cylinder for 8mm of 10mm, wrap up with tantalum, then use six-plane piercer at 4 ~ 6GPa, at 1200 ~ 1800 DEG C after heat-insulation pressure keeping 30 ~ 60min, after using liquid nitrogen to cool this alloy fast immediately, obtain magnalium boron nickel based hydrogen storage material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510687910.6A CN105274411A (en) | 2015-10-22 | 2015-10-22 | Magnesium, aluminum, boron and nickel-based hydrogen storage material and preparing method thereof |
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| CN201510687910.6A CN105274411A (en) | 2015-10-22 | 2015-10-22 | Magnesium, aluminum, boron and nickel-based hydrogen storage material and preparing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111875383A (en) * | 2020-08-13 | 2020-11-03 | 华北电力大学（保定） | Non-stoichiometric titanium carbide hydrogen storage material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162197A (en) * | 1996-01-22 | 1997-10-15 | 东芝株式会社 | Hydrogen-storage alloy, alloy surface modifying method, cell and alkaline secondary cell negative electrode |
| CN1271025A (en) * | 2000-05-31 | 2000-10-25 | 南开大学 | Magnesium-base hydrogen storing alloy material |
| JP2008190004A (en) * | 2007-02-06 | 2008-08-21 | National Institute Of Advanced Industrial & Technology | Mg-M-H BASED HYDROGEN STORAGE ALLOY, AND METHOD FOR PRODUCING THE SAME |
-
2015
- 2015-10-22 CN CN201510687910.6A patent/CN105274411A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162197A (en) * | 1996-01-22 | 1997-10-15 | 东芝株式会社 | Hydrogen-storage alloy, alloy surface modifying method, cell and alkaline secondary cell negative electrode |
| CN1271025A (en) * | 2000-05-31 | 2000-10-25 | 南开大学 | Magnesium-base hydrogen storing alloy material |
| JP2008190004A (en) * | 2007-02-06 | 2008-08-21 | National Institute Of Advanced Industrial & Technology | Mg-M-H BASED HYDROGEN STORAGE ALLOY, AND METHOD FOR PRODUCING THE SAME |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111875383A (en) * | 2020-08-13 | 2020-11-03 | 华北电力大学（保定） | Non-stoichiometric titanium carbide hydrogen storage material and preparation method thereof |
| CN111875383B (en) * | 2020-08-13 | 2022-04-15 | 华北电力大学（保定） | Non-stoichiometric titanium carbide hydrogen storage material and preparation method thereof |
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