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A preparation method of aluminum anode material for sustainable and stable hydrogen production

An aluminum anode and stable technology, which is applied in the field of preparation of aluminum anode materials for sustainable and stable hydrogen production, can solve the problems such as non-uniform shedding of corrosion products, low current efficiency of sacrificial anodes, segregation and dissolution of alloy components, and easy control of the synthesis process. , The effect of good hydrogen production rate and uniform and dense structure

Active Publication Date: 2019-03-12
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above sacrificial anode materials are highly corrosive in the working environment and the current efficiency of the sacrificial anode is low, so the corrosion products cannot fall off evenly during the reaction.
Patent 201110140455.X designed a sacrificial anode material, but this material is prepared by melting casting method, and there is a problem of uneven dissolution due to serious segregation of alloy components

Method used

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  • A preparation method of aluminum anode material for sustainable and stable hydrogen production
  • A preparation method of aluminum anode material for sustainable and stable hydrogen production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Step 1: Synthesizing master alloy powders such as Al-10%Ga, Al-20%In, Al-10%Sn, Al-10%Mg by pre-synthesis method;

[0019] Step 2; the alloy powder synthesized in step 1 is by mass ratio 15% (Al-10%Ga), 30% (Al-20%In), 30% (Al-10%Sn), 25% (Al -10% Mg) are uniformly mixed, the mixture is put into a steel tank, and put into a planetary ball mill for mechanical alloying. The mass ratio of the material to the ball is set to 1:25, the ball milling speed is set to 400 rpm, and the ball milling time is set to 1 Hour, obtain alloy material;

[0020] Step 3: Send the alloy material after ball milling in step 2 into the preset product mold in the hot press for pressing, and press the mixture into a blank at a pressing pressure of 1.5Gpa and a pressing temperature of 850°C, and the heating rate is controlled 25°C / min. After pressing and forming, wait for the blank to cool to room temperature and then take out the finished product;

[0021] Step 4: Put the sintered blank into the...

Embodiment 2

[0023] Step 1: Synthesizing master alloy powders such as Al-10%Ga, Al-20%In, Al-10%Sn, Al-10%Mg by pre-synthesis method;

[0024] Step 2; the alloy powder synthesized in step 1 is by mass ratio 25% (Al-10%Ga), 25% (Al-20%In), 25% (Al-10%Sn), 25% (Al -10% Mg) are uniformly mixed, the mixture is put into a steel tank, and put into a planetary ball mill for mechanical alloying. The mass ratio of the material to the ball is set to 1:25, the ball milling speed is set to 400 rpm, and the ball milling time is set to 1 Hour, obtain alloy material;

[0025] Step 3: Send the alloy material after ball milling in step 2 into the preset product mold in the hot press for pressing, and press the mixed material into a blank at a pressing pressure of 1.5Gpa and a pressing temperature of 900°C, and the heating rate is controlled 30°C / min. After pressing and forming, wait for the blank to cool to room temperature and then take out the finished product;

[0026] Step 4: Put the sintered blank i...

Embodiment 3

[0028] Step 1: Synthesizing master alloy powders such as Al-10%Ga, Al-20%In, Al-10%Sn, Al-10%Mg by pre-synthesis method;

[0029] Step 2; the alloy powder synthesized in step 1 is 30% (Al-10%Ga), 20% (Al-20%In), 20% (Al-10%Sn), 30% (Al -10% Mg) are uniformly mixed, the mixture is put into a steel tank, and put into a planetary ball mill for mechanical alloying. The mass ratio of the material to the ball is set to 1:25, the ball milling speed is set to 400 rpm, and the ball milling time is set to 1 Hour, obtain alloy material;

[0030] Step 3: Send the alloy material after ball milling in step 2 into the preset product mold in the hot press for pressing, and press the mixed material into a blank at a pressing pressure of 1.5Gpa and a pressing temperature of 900°C, and the heating rate is controlled 25°C / min. After pressing and forming, wait for the blank to cool to room temperature and then take out the finished product;

[0031] Step 4: Put the sintered blank into the shapin...

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Abstract

The invention provides a preparation method of an aluminum anode material for sustainable and stable hydrogen production. The preparation method comprises the following steps that Al-10% Ga, Al-20% In, Al-10% Sn, Al-10% Mg and other intermediate alloy powder are synthesized through a pre-synthesis method; the synthesized alloy powder is evenly mixed by the mass ratio, a mixture is placed in a steel tank, and the steel tank is put into a planetary ball mill for mechanical alloying; the mass ratio of the material and balls is set as 1:25, the ball milling rate is set as 300-400 r / min, the ball milling time is set as 1-2 hours, and then an alloy material is obtained; the alloy material after ball milling is fed into a preset product mold in a hotpress to be pressed, blank pieces are obtained under a pressing temperature of 850-900 DEG C, the heating rate is controlled to 25-30 DEG C / min, and finished products are taken out after the press-molded blank pieces are cooled down to the room temperature; and the finished blank pieces are placed into a sizing die for shaping, and then machined to meet the product size requirements. The preparation method of the aluminum anode material for sustainable and stable hydrogen production realizes the characteristic of controlling the hydrogen releasing stability of the products.

Description

technical field [0001] The invention relates to the technical field of aluminum anode materials for sustainable and stable hydrogen production, in particular to a preparation method of aluminum anode materials for sustainable and stable hydrogen production. Background technique [0002] Aluminum is the most abundant metal element on the earth. It has high energy density, low price, stable storage and non-toxicity. It is a promising energy carrier. The electrochemical equivalent value of aluminum is 2.98Ah / g, second only to lithium's 3.86Ah / g. From the perspective of volume specific capacity, aluminum is 8.04Ah / cm3, which is much higher than 2.06Ah / cm3 / of metal lithium and metal 3.83Ah / cm3 of magnesium. Therefore, aluminum has broad development potential as an anode material for energy storage and conversion, and no harmful substances containing carbon and nitrogen are produced during the hydrogen production process of aluminum-water reaction, and the by-product aluminum hy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/04C23F13/14H01M8/065
CPCC22C1/0416C23F13/14H01M8/065Y02E60/50
Inventor 朱建锋刘毅赵婷张佩秦毅方媛李婧方园武清武文玲
Owner SHAANXI UNIV OF SCI & TECH
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