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Fullerene hydrogen storage material modified by hydrogen storage alloy or metal nano-particle

A technology for hydrogen storage materials and hydrogen storage alloys, which is applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc. The effect of reducing production costs

Inactive Publication Date: 2004-12-29
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Japan's Toyota Motor Corporation (JP10072201) through the C 60 After modifying the surface with a layer of hydrogen storage metal Pd with a thickness of about 20 nm, hydrogen was successfully introduced into the C 60 Internal, but the hydrogen storage temperature is below -196K, and the utilization rate of Pd is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Fullerene samples are purchased from the market, the purity of fullerene is 60%, and 99% of the spherical structure carbon molecules are C 60 , and the remaining 1% is C 70 . Prepare 100ml PdCl 2 solution, and mixed with 2g fullerene sample and stirred for 1h at a stirring speed of 800r / min. Pass H 2 Reaction, the reaction temperature is 100°C. The reaction product was washed, dried, and calcined at 300° C. for 2 h under argon to prepare a Pd-modified fullerene hydrogen storage material. The research results of TEM, XRD, electron diffraction and energy spectrum show that the hydrogen storage metal on the surface of the fullerene is monodispersely distributed, and the particle size is 1-50nm. Under the conditions of hydrogen purity of 99.999%, initial pressure of 7MPa and room temperature, the hydrogen storage capacity of Pd-modified fullerene is 2.5wt%.

Embodiment 2

[0021] The properties of the fullerene sample and the test conditions for hydrogen storage and release are the same as in Example 1. 1g of SnCl 2 2H 2 O was dissolved in 50ml of HCl solution with a concentration of 0.1M to prepare a sensitization solution. 0.25g of PdCl 2Dissolve in 100ml, 0.25M HCl solution to prepare activation solution. The samples were placed in the sensitizing solution and the activation solution in turn to sensitize and activate the fullerene surface respectively. Each process was fully dispersed by a combination of ultrasonic dispersion and high-intensity mechanical stirring and dispersion, and each After the process, rinse and filter thoroughly with deionized water. The reaction product was calcined at 300° C. for 2 h under the condition of argon to prepare a Pd-modified fullerene hydrogen storage material. The average particle size of Pd particles on the surface of fullerene is about 5nm. The hydrogen storage capacity of Pd-modified fullerene is...

Embodiment 3

[0023] The properties of the fullerene sample and the test conditions for hydrogen storage and release are the same as in Example 1. The same concentration of NiCl 2 and LaCl 3 The solution was uniformly mixed at a volume ratio of 5:1, 4 g of fullerene samples were added to the mixed solution, and mechanically stirred at a stirring speed of 500 r / min. Slowly add Na 2 CO 3 solution, after complete reaction, suction filtration, deionized water washing and vacuum drying, to obtain LaNi attached to the surface of fullerene 5 La 2 o 3 · 10NiO. Transfer the reaction product into a tube furnace with H 2 Reaction, the reaction temperature is 1000°C. The reaction product was washed and calcined at 300 °C for 2 h under the protection of argon to obtain LaNi 5 Modified fullerene hydrogen storage materials. The results of TEM, XRD, electron diffraction and energy spectrum studies show that the hydrogen storage alloys on the surface of fullerenes are mostly distributed in a monod...

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Abstract

The hydrogen storing material is fullerene material with hydrogen storing metal or alloy compounded to the surface. Fullerene is spherical carbon molecule or carbon cage comprising several decades or several thousands of even number of carbon atoms and in the chemical expression of Cn, with n is 60 or other even number greater than 60. Fullerene as hydrogen storing material may be also mixture of tow or more spherical carbon molecule or carbon cage in any ratio. The hydrogen storing metals includes IA to IVB heat releasing soluble metals and VB to VIII heat absorbing soluble metals except Pd. The hydrogen storing alloy may be crystalline RE-Ni alloy in AB5 form, Zr-base or Ti-base Laves line AB2 form alloy, FeNi and Ti line AB form alloy, etc. The hydrogen storing material of the present invention has hydrogen storing capacity of 2.0-4.0 wt%.

Description

technical field [0001] The invention relates to a fullerene hydrogen storage material modified by a hydrogen storage metal or a hydrogen storage alloy, in particular to a hydrogen storage material prepared by compounding a hydrogen storage metal or a hydrogen storage alloy with nanometer particle size on the surface of the fullerene. Background technique [0002] With the gradual increase of fossil fuel consumption and depletion of reserves, and people's increasing emphasis on environmental protection, people are increasingly eager to use environmentally friendly and renewable energy. At present, people place the most hope on hydrogen energy. This is because hydrogen energy resources are very rich, which can be said to be "inexhaustible and inexhaustible"; the combustion product is only water, and water can be recycled; the fuel value is high, three times that of gasoline; Some internal combustion engines can use hydrogen as fuel with only a slight modification, or convert ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
CPCB82Y30/00
Inventor 木士春潘牧袁润章
Owner WUHAN UNIV OF TECH
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