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Preparation method of hydrogen storage material with high reversible hydrogen storage capacity

A hydrogen storage material and hydrogen storage technology, applied in the field of hydrogen storage materials, can solve problems such as the gap in hydrogen storage performance, and achieve the effect of simple preparation process and high reversible hydrogen release capacity

Inactive Publication Date: 2014-07-16
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Although there are various types of hydrogen storage materials currently being studied, each with their own advantages, they are not compatible with the requirements of practical applications and the goals proposed by the U.S. Department of Energy (DOE) for a hydrogen storage capacity of ≥6.5wt% and a decomposition temperature of 60-120°C. Compared with the hydrogen storage performance of the above materials, there is still a big gap. Therefore, exploring and developing new high-performance hydrogen storage materials is still one of the main tasks at present.

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  • Preparation method of hydrogen storage material with high reversible hydrogen storage capacity

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Embodiment 1

[0023] A method for increasing the reversible hydrogen storage capacity of hydrogen storage material HPSB, the steps are as follows: 1) adding 1.07g NaBH 4 with 0.101g CoCl 2 Add 4g of water, then carry out the hydrolysis reaction at 30°C for 2 minutes, filter the filter residue after the hydrolysis reaction, dry the filter residue in the air (drying temperature is 20°C) for 16 hours to obtain the Co-B catalyst; 2) add 0.004g Co -B catalyst with 0.01gY 2 o 3 Stir the mixture evenly with a glass rod in a mortar; 3) Make NaOH and water into a strong alkali solution with a pH of 12-13, and then add 0.0178g of sodium borohydride weighed in a glove box filled with argon to Mix evenly in a strong alkali solution to obtain a sodium borohydride alkaline aqueous solution, the mass fraction of sodium borohydride in the sodium borohydride alkaline aqueous solution is 9%, and finally add the mixture to the sodium borohydride alkaline aqueous solution at 25°C for hydrolysis Hydrogen rea...

Embodiment 2

[0025] A method for increasing the reversible hydrogen storage capacity of hydrogen storage material HPSB, the steps are as follows: 1) adding 1.07g NaBH 4 with 0.101g CoCl 2 Add 4g of water, then carry out the hydrolysis reaction at 25°C for 3 minutes, filter the filter residue after the hydrolysis reaction, dry the filter residue in the air (drying temperature is 30°C) for 12 hours to obtain the Co-B catalyst; 2) add 0.007g Co -B catalyst with 0.007gY 2 o 3 Stir the mixture evenly with a glass rod in a mortar; 3) Make NaOH and water into a strong alkali solution with a pH of 12-13, and then add 0.0178g of sodium borohydride weighed in a glove box filled with argon to Mix evenly in a strong alkali solution to obtain a sodium borohydride alkaline aqueous solution, the mass fraction of sodium borohydride in the sodium borohydride alkaline aqueous solution is 9%, and finally add the mixture to the sodium borohydride alkaline aqueous solution at 25°C for hydrolysis Hydrogen re...

Embodiment 3

[0027] A method for increasing the reversible hydrogen storage capacity of hydrogen storage material HPSB, the steps are as follows: 1) adding 1.07g NaBH 4 with 0.101g CoCl 2 Add 4g of water, then carry out the hydrolysis reaction at 20°C for 4 minutes, filter the filter residue after the hydrolysis reaction, dry the filter residue in the air (drying temperature is 20°C) for 20 hours to obtain the Co-B catalyst; 2) add 0.01g Co -B catalyst with 0.004gY 2 o 3 Stir the mixture evenly with a glass rod in a mortar; 3) Make NaOH and water into a strong alkali solution with a pH of 12-13, and then add 0.0178g of sodium borohydride weighed in a glove box filled with argon to Mix evenly in a strong alkali solution to obtain a sodium borohydride alkaline aqueous solution, the mass fraction of sodium borohydride in the sodium borohydride alkaline aqueous solution is 9%, and finally add the mixture to the sodium borohydride alkaline aqueous solution at 20°C for hydrolysis Hydrogen rea...

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Abstract

The invention provides a preparation method of a hydrogen storage material with high reversible hydrogen storage capacity. The preparation method comprises the following steps: uniformly stirring a Co-B catalyst and rare earth oxide in a mortar to obtain a mixture; adding the mixture into a sodium borohydride alkaline aqueous solution, then carrying out hydrolytic hydrogen release reaction at 10-30 DEG C, filtering after the reaction is ended, drying filter residues obtained by filtering for 5-20 days to obtain a component A at 10-30 DEG C, and mixing the component A and TiO2 accounting for 3-12 percent by mass of the component A to obtain the hydrogen storage material. The preparation method is simple in preparation process; in addition, the prepared hydrogen storage material is high in reversible hydrogen release capacity, and is a hydrogen storage material with high reversible hydrogen storage capacity.

Description

technical field [0001] The invention belongs to the field of hydrogen storage material HPSB (Hydrolysis Production of Sodium Borohydride), and in particular relates to a preparation method of a hydrogen storage material with a high reversible hydrogen storage capacity. Background technique [0002] With the depletion of petrochemical resources and the resulting environmental pollution, the development of non-polluting renewable energy has become an urgent task facing mankind. Hydrogen energy is regarded as the clean energy with the most development potential in the 21st century. However, due to the lack of convenient and effective hydrogen storage materials and hydrogen storage technologies, the application of hydrogen energy has been greatly hindered for a long time. The hydrogen storage materials currently studied mainly include hydrogen storage alloys, coordination hydrides, amino compounds, organic liquids, carbon-based materials, and metal-organic frameworks (MOFs). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/06B01J23/75B01J23/83
CPCY02E60/36
Inventor 郑雪萍刘胜林温久然罗伟华鲁卓睿刘敏
Owner CHANGAN UNIV