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Preparation method of multi-component hydrogen storage composite material

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

Inactive Publication Date: 2018-11-06
TAICANG BIQI NEW MATERIAL RES & DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 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

[0027] Dissolve 3 g of indium chloride, 4 g of stannous chloride, 3 g of calcium nitrate, and 4 g of bismuth nitrate in 200 ml of deionized water, and add deionized water until the volume of the solution is 1 l to obtain an aqueous solution of mixed metal salts.

[0028] Dissolve 1g of urea, 4g of diammonium hydrogen phosphate, 1g of sodium hexadecylsulfonate, and 2g of sodium polyacrylate in 100ml of deionized water, add dropwise 100ml of a mixed metal salt solution, and stir for 12 hours after dropping, and filter with suction. Dry at 120°C for 3 hours to obtain the precursor of the hydrogen storage material; crush 15g of the precursor of the hydrogen storage material into 50nm particles in a ball mill, mix it with 20g of LiAlH4 evenly, place it in a tube furnace, and heat it to 600 ℃, reduced for 2 hours, cooled, and the solid was washed three times with 100ml deionized water and 3 times with 100ml 1M acetic acid aqueous solution, and then dried at 100℃ for 4 hours to obtain...

Embodiment 2

[0031] Dissolve 5 g of indium chloride, 6 g of stannous chloride, 5 g of calcium nitrate, and 6 g of bismuth nitrate in 200 ml of deionized water, and add deionized water until the volume of the solution is 1 l to obtain an aqueous solution of mixed metal salts.

[0032] Dissolve 3g of urea, 6g of diammonium hydrogen phosphate, 3g of sodium hexadecylsulfonate, and 4g of sodium polyacrylate in 100ml of deionized water, add dropwise 100ml of a mixed metal salt solution, and stir for 24 hours after dropping, and filter with suction. Dry at 120°C for 3 hours to obtain the precursor of the hydrogen storage material; crush 15 g of the precursor of the hydrogen storage material into 100 nm particles in a ball mill, and then mix it with 30 g of LiAlH 4 Mix evenly, place in a tube furnace, heat to 750°C under a hydrogen atmosphere, reduce for 3 hours, cool, wash the solid with 100ml deionized water three times, 100ml 1M acetic acid aqueous solution for three times, and then dry at 100°C...

Embodiment 3

[0035] Dissolve 3.5 g of indium chloride, 4.5 g of stannous chloride, 3.5 g of calcium nitrate, and 4.5 g of bismuth nitrate in 200 ml of deionized water, and add deionized water until the volume of the solution is 1 l to obtain a mixed metal salt solution.

[0036] Dissolve 1.5g of urea, 4.5g of diammonium hydrogen phosphate, 1.5g of sodium hexadecylsulfonate, and 2.5g of sodium polyacrylate in 100ml of deionized water, add 100ml of mixed metal salt aqueous solution dropwise, stir for 12 hours, and pump Filter, and dry the solid at 120°C for 3 hours to obtain a hydrogen storage material precursor; crush 15g of the hydrogen storage material precursor into 80nm particles in a ball mill, then mix it with 25gLiAlH4 evenly, place it in a tube furnace, and under a hydrogen atmosphere Heating to 600°C, reducing for 2 hours, cooling, washing the solid with 100ml of deionized water three times, 100ml of 1M acetic acid aqueous solution for three times, and drying at 100°C for 4 hours to...

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Abstract

The invention belongs to the technical field of energy materials, and particularly relates to a preparation method of a multi-component hydrogen storage composite material. The preparation method comprises the following steps that 1, urea, diammonium hydrogen phosphate, hexadecylsulfonic acid sodium salt and sodium polyacrylate are mixed, a mixed salt solution of indium chloride, stannous chloride, calcium nitrate and bismuth nitrate is dropwise added, stirring is carried out for 12-24 hours, suction filtration is carried out, so that a hydrogen storage material precursor is obtained; 2, vacuum drying is carried out on the hydrogen storage material precursor at the temperature of 120 DEG C, the hydrogen storage material precursor is uniformly mixed with LiAlH4, and high-temperature reduction is carried out under a hydrogen atmosphere; and 3, the reduced product is washed with water, washed with an acetic acid aqueous solution and then dried, so that the multi-component hydrogen storagecomposite material is obtained. A PCT relation tester is sued for testing the hydrogen absorption performance and the hydrogen desorption performance of the multi-component hydrogen storage compositematerial, and the hydrogen storage density per unit mass is measured to be higher than 13.6%.

Description

technical field [0001] The invention belongs to the technical field of energy materials, in particular to a preparation method of a multi-element hydrogen storage composite material. Background technique [0002] Hydrogen energy has the characteristics of rich resources, environmental friendliness, and renewable, and is known as a green and clean new energy in the 21st century. The composite materialization of hydrogen storage materials has made a breakthrough in the development direction of hydrogen storage materials, and the preparation of composite hydrogen storage materials is the basis for improving the performance of hydrogen storage materials. . [0003] Xu Hai et al. In order to study the effect of titanium on Mg 2 Effect of Ni hydrogen storage material properties on Mg 2 Different content of alloying element titanium was added to Ni alloy, and the microstructure, hydrogen absorption and desorption performance and cycle stability were tested and analyzed. The r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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