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Preparation method of composite hydrogen storage material

A technology of hydrogen storage materials and mixed metals, which is applied in the field of preparation of composite hydrogen storage materials, can solve the problems of high hydrogen absorption and desorption temperature, poor cycle stability, etc., achieve high cost performance, avoid long-term high-temperature melting and homogenization treatment effects

Inactive Publication Date: 2018-11-02
TAICANG BIQI NEW MATERIAL RES & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, as new hydrogen storage materials, several materials have their own characteristics in hydrogen storage performance. Metal complex hydrides have high hydrogen storage capacity, but have high hydrogen absorption and desorption temperatures and poor cycle stability. Highly active hydrogen storage agents have been developed. is its development direction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Dissolve 5g of lanthanum nitrate, 2g of nickel chloride, 3g of magnesium nitrate, and 1g of lead nitrate in 200ml of deionized water, add deionized water to make the solution volume 1l, and obtain a mixed metal salt aqueous solution.

[0027] Dissolve 3g of ammonium oxalate, 6g of trisodium nitrilotriacetic acid, 3g of sodium laurylaminopropionate, and 1g of polyvinyl alcohol in 100ml of deionized water. Add 100ml of mixed metal salt aqueous solution dropwise. After dripping, stir for 12 hours and filter with suction. , The solid was dried at 100°C for 4 hours to obtain the hydrogen storage material precursor; 20g hydrogen storage material precursor was crushed into 50nm particles in a ball mill, and then mixed with 10g CaH 2 Mix well, put it in a tube furnace, heat to 500℃ under hydrogen atmosphere, reduce for 3 hours; cool, wash the solid with 100ml deionized water 3 times, 100ml 1M acetic acid aqueous solution 3 times, and then dry at 80℃ After 6 hours, a composite hydro...

Embodiment 2

[0030] Dissolve 10g lanthanum nitrate, 5g nickel chloride, 6g magnesium nitrate, and 3g lead nitrate in 200ml deionized water, add deionized water to make the solution volume 1l, and obtain a mixed metal salt aqueous solution.

[0031] Dissolve 5g ammonium oxalate, 8g trisodium nitrilotriacetic acid, 5g sodium laurylaminopropionate, 3g polyvinyl alcohol in 100ml deionized water, add 100ml mixed metal salt aqueous solution dropwise, after dripping, stir for 24 hours, suction filter , The solid was dried at 100°C for 4 hours to obtain hydrogen storage material precursor; 20g hydrogen storage material precursor was crushed into 100nm particles in a ball mill, and then mixed with 20g CaH 2 Mix uniformly, place in a tube furnace, heat to 650℃ under hydrogen atmosphere, reduce for 6 hours; cool, wash the solid with 100ml deionized water 3 times, 100ml 1M acetic acid aqueous solution 3 times, and then dry at 80℃ After 6 hours, a composite hydrogen storage material was obtained.

[0032] T...

Embodiment 3

[0034] Dissolve 8g of lanthanum nitrate, 4g of nickel chloride, 5g of magnesium nitrate, and 2g of lead nitrate in 200ml of deionized water, add deionized water to the volume of the solution to 1l, and obtain a mixed metal salt aqueous solution.

[0035] Dissolve 4g of ammonium oxalate, 7g of trisodium nitrilotriacetic acid, 4g of sodium laurylaminopropionate, and 2g of polyvinyl alcohol in 100ml of deionized water. Add 100ml of mixed metal salt aqueous solution dropwise. After dripping, stir for 16 hours and filter with suction. , The solid was dried at 100°C for 4 hours to obtain hydrogen storage material precursor; 20g hydrogen storage material precursor was crushed into 80nm particles in a ball mill, and then mixed with 16g CaH 2 Mix uniformly, place in a tube furnace, heat to 600℃ under hydrogen atmosphere, reduce for 4 hours; cool, wash the solid with 100ml deionized water 3 times, 100ml 1M acetic acid aqueous solution 3 times, and then dry at 80℃ After 6 hours, a composite ...

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Abstract

The invention belongs to the technical field of energy materials, and particularly discloses a preparation method of a composite hydrogen storage material. The preparation method comprises the steps that ammonium oxalate, nitrilotriacetic acid trisodium salt, sodium lauraminopropionate and polyvinyl alcohol are mixed, a mixed salt solution of lanthanum nitrate, nickel chloride, magnesium nitrate and lead nitrate is dropwise added, stirring is carried out for 12-24 hours, suction filtration is carried out, and hydrogen storage material precursors are obtained. The hydrogen storage material precursors are subjected to vacuum drying at the temperature of 100 DEG C, then are mixed with CaH2 evenly, and are reduced at high temperature under hydrogen atmosphere. After reduction products are washed with water and an acetic acid aqueous solution, drying is carried out, and the composite hydrogen storage material is obtained; and the hydrogen absorption-desorption performance of the composite hydrogen storage material is tested on a pressure-composite-temperature relation tester (PCT), and the hydrogen storage density per unit mass is higher than 12.4%.

Description

Technical field [0001] The invention belongs to the technical field of energy materials, and specifically is a preparation method of a composite hydrogen storage material. Background technique [0002] Hydrogen energy is rich in resources, environmentally friendly, and renewable, and is known as the green and clean new energy in the 21st century. The storage of hydrogen has always been a problem that plagues the development and wide application of hydrogen energy. Traditional hydrogen storage methods mainly include gaseous and liquid hydrogen storage methods. High-pressure gaseous hydrogen storage has low density, high pressure and poor safety. Liquid hydrogen storage has high bulk density, but needs 20 K ultra-low temperature and effective isolation, high technical requirements, low economic value. The use of metal hydrogen storage materials can effectively overcome the shortcomings of the two hydrogen storage methods, gaseous and liquid, and achieve the goals of high hydrogen...

Claims

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Application Information

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IPC IPC(8): B22F9/22C01B3/00
CPCB22F9/22C01B3/0078Y02E60/32
Inventor 蓝碧健
Owner TAICANG BIQI NEW MATERIAL RES & DEV
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