Nano magnesium-based hydrogen storage material and preparation method thereof

A hydrogen storage material, nano-magnesium technology, applied in the field of hydrogen storage materials, can solve the problems of high hydrogen desorption temperature, unsatisfactory hydrogen absorption and desorption kinetics, etc., and achieve high activity effect

Active Publication Date: 2020-11-17
JIANGSU JICUI ANTAI CHUANGMING ADVANCED ENERGY MATERIALS RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although through unremitting efforts, the hydrogen absorption temperature of magnesium-based hydrogen storage materials can be reduced to 373K, but its hydrogen absorption and desorption kinetics are still not ideal; in addition, magnesium-based hydrogen storage materials need to be around 573K to fully desorb hydrogen. Hydrogen release temperature is still high

Method used

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  • Nano magnesium-based hydrogen storage material and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 A kind of MgH 2 @5wt%(Sc 2 o 3 +TiO 2 ) Nano-magnesium-based hydrogen storage materials

[0047] (1) Preparation of graphene-supported titanium dioxide and scandium trioxide catalyst (wherein the mass ratio of titanium dioxide, scandium trioxide and graphene is 1:1:8):

[0048] 1) Put graphene nanosheets into concentrated HNO 3 In the solution, reflux at 140°C for 8h, cool to room temperature, wash with deionized water until neutral and dry, wherein the drying temperature is 80°C to obtain functionalized graphene powder;

[0049] 2) Add 0.8g of functionalized graphene powder and 0.4256g of tetrabutyl titanate to 10mL of isopropanol reagent, stir and mix for 1 hour to obtain A blend; add 0.361g of scandium nitrate monohydrate to 10ml of isopropanol , then add 8ml of water, adjust PH=2-3 by adding concentrated nitric acid, and stir for a period of time to obtain B solution;

[0050] 3) Place solution B in a constant temperature tank at 10°C, stir soluti...

Embodiment 2

[0056] Embodiment 2 A kind of nano-magnesium-based hydrogen storage material

[0057] (1) Preparation of graphene-supported titanium dioxide and scandium trioxide catalyst (wherein the mass ratio of titanium dioxide, scandium trioxide and graphene is 1:1:3):

[0058] 1) Put graphene nanosheets into concentrated HNO 3 In the solution, reflux at 140°C for 8h, cool to room temperature, wash with deionized water until neutral and dry, wherein the drying temperature is 80°C to obtain functionalized graphene powder;

[0059] 2) Add 0.6g of functionalized graphene powder and 0.8512g of tetrabutyl titanate to 10mL of isopropanol reagent, stir and mix for 1 hour to obtain A blend; add 0.72g of scandium nitrate monohydrate to 10ml of isopropanol , then add 8ml of water, adjust PH=2-3 by adding concentrated nitric acid, and stir for a period of time to obtain B solution;

[0060] 3) Place solution B in a constant temperature tank at 10°C, stir solution B vigorously with magnetic force,...

Embodiment 3

[0067] Embodiment 3 A kind of nano-magnesium-based hydrogen storage material

[0068] (1) Preparation of graphene-supported titanium dioxide and scandium trioxide catalyst (wherein the mass ratio of titanium dioxide, scandium trioxide and graphene is 3:3:4):

[0069] 1) Put graphene nanosheets into concentrated HNO 3 In the solution, reflux at 140°C for 8h, cool to room temperature, wash with deionized water until neutral and dry, wherein the drying temperature is 80°C to obtain functionalized graphene powder;

[0070] 2) Add 0.4g of functionalized graphene powder and 1.2768g of tetrabutyl titanate to 10mL of isopropanol reagent, stir and mix for 1 hour to obtain A blend; add 1.08g of scandium nitrate monohydrate to 10ml of isopropanol , then add 8ml of water, adjust PH=2-3 by adding concentrated nitric acid, and stir for a period of time to obtain B solution;

[0071] 3) Place solution B in a constant temperature tank at 10°C, stir solution B vigorously with magnetic force,...

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Abstract

The invention provides a nano magnesium-based hydrogen storage material and a preparation method thereof. The nano magnesium-based hydrogen storage material is prepared from magnesium and a graphene loaded titanium dioxide and scandium trioxide catalyst. The preparation method of the nano magnesium-based hydrogen storage material comprises the following steps: a pretreatment step: mixing magnesiumpowder with graphene-loaded titanium dioxide and scandium trioxide catalyst powder according to the ratio in the nano magnesium-based hydrogen storage material to obtain mixed powder; a hydrogenationcombustion synthesis step: performing hydrogenation combustion synthesis on the mixed powder to obtain a magnesium-based hydrogen storage material; and a post-treatment step: carrying out ball milling on the magnesium-based hydrogen storage material to obtain the nano magnesium-based hydrogen storage material. The nano magnesium-based hydrogen storage material prepared by the method has the characteristics of high activity, high capacity and excellent hydrogen absorption and desorption performance.

Description

technical field [0001] The invention belongs to the technical field of hydrogen storage materials, and in particular relates to a nano-magnesium-based hydrogen storage material and a preparation method thereof. Background technique [0002] Energy is one of the three pillars of the world today and the source of human social activities. With the continuous progress and development of human society, the energy crisis caused by the massive consumption of fossil energy such as coal, oil and natural gas and the resulting environmental problems are the most severe test that mankind faces in the 21st century. Seeking and developing clean and renewable new energy sources to replace traditional fossil energy sources and realize the sustainable development of human society is a severe challenge for all human beings, especially for some oil-poor countries. Due to its large reserves, cleanness and high efficiency, hydrogen energy is considered to be the clean energy with the most devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C22C23/00B22F9/04
CPCB22F1/0003C22C23/00B22F9/04C22C2202/04B22F2009/043
Inventor 原建光武英阎有花张宝周少雄
Owner JIANGSU JICUI ANTAI CHUANGMING ADVANCED ENERGY MATERIALS RES INST CO LTD
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