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Aluminum-air battery cathode catalyst and preparation method thereof

A cathode catalyst, aluminum-air battery technology, which is applied in battery electrodes, fuel cell-type half-cells and primary-cell-type half-cells, circuits, etc. Battery commercialization process and other issues

Active Publication Date: 2020-10-13
郑州佛光发电设备股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, a major problem affecting the industrial production of aluminum-air batteries is the serious polarization of the air electrodes.
The reason for this phenomenon is that the activity of the catalyst is not high
The noble metals platinum and silver have high catalytic performance for oxygen reduction, but their high price greatly limits the commercialization of aluminum-air batteries.

Method used

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  • Aluminum-air battery cathode catalyst and preparation method thereof
  • Aluminum-air battery cathode catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1, take 1g of silver nitrate and 1.5g of nickel nitrate, add them to 20ml of deionized water to dissolve, then add an appropriate amount of urea to adjust the pH of the solution, then slowly add an appropriate amount of hydrogen peroxide as a reducing agent, and an appropriate amount of polyethylene glycol as a surfactant; 50 ℃ water bath for 30 minutes to obtain the reaction solution;

[0033] Step 2, adding 5 g of manganese nitrate and 5 g of activated carbon to the reaction solution obtained in step 1, and ultrasonically stirring for 1 h to obtain a catalyst precursor;

[0034] Step 3: Put the catalyst precursor in an oven and dry it at 80°C for 120 minutes, transfer the dried solid to a ball mill for ball milling for 60 minutes, and sieve to obtain the precursor powder;

[0035] Step 4: Put the precursor powder into a crucible, calcinate in a muffle furnace at 200° C. for 180 min, and cool naturally to obtain an Ag-Ni double-doped carbon-supported manganese cat...

Embodiment 2

[0037] Step 1: Take 1.5g of silver acetate and 1g of nickel acetate and dissolve them in 20ml of deionized water, then add an appropriate amount of ammonium carbonate to adjust the pH of the solution, then slowly add an appropriate amount of hydrazine hydrate as a reducing agent, and an appropriate amount of sodium dodecylbenzenesulfonate As a surfactant; react in a water bath at 90°C for 50 minutes to obtain a reaction solution;

[0038] Step 2, adding 10 g of manganese acetate and 5 g of acetylene black to the reaction solution obtained in step 1, and ultrasonically stirring for 40 min to obtain a catalyst precursor;

[0039] Step 3: put the catalyst precursor in an oven and dry it at 120°C for 300 minutes, transfer the dried solid to a ball mill for ball milling for 50 minutes, and sieve to obtain the precursor powder;

[0040] Step 4: Put the precursor powder into a crucible, calcinate in a muffle furnace at 400° C. for 60 minutes, and cool naturally to obtain an Ag-Ni dou...

Embodiment 3

[0042] Step 1: Take 1.5g of silver acetate and 1g of nickel nitrate and dissolve them in 10ml of absolute ethanol, then add an appropriate amount of ammonia water to adjust the pH of the solution, then slowly add an appropriate amount of hydrogen peroxide as a reducing agent, and an appropriate amount of hexadecyl trimethyl bromide Ammonium is used as a surfactant; react in a water bath at 60°C for 50 minutes to obtain a reaction solution;

[0043] Step 2, adding 10 g of manganese acetate and 5 g of carbon nanotubes to the reaction solution obtained in step 1, and ultrasonically stirring for 30 min to obtain a catalyst precursor;

[0044] Step 3: put the catalyst precursor in an oven and dry it at 60°C for 500 minutes, transfer the dried solid to a ball mill for ball milling for 50 minutes, and sieve to obtain the precursor powder;

[0045] Step 4: Put the precursor powder into a crucible, calcinate in a muffle furnace at 500° C. for 360 minutes, and cool naturally to obtain a...

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Abstract

The invention discloses an aluminum-air battery cathode catalyst and a preparation method thereof. The preparation method comprises the steps: step 1, adding an Ag source compound, a Ni source compound, an acid-base buffer agent, a reducing agent and a surfactant into a solvent, and conducting a solvothermal reaction after mixing to obtain a reaction solution; step 2, adding a Mn source compound and a C source into the reaction solution obtained in the step 1, and carrying out ultrasonic stirring to obtain a catalyst precursor; drying the catalyst precursor, ball-milling the dried catalyst precursor and sieving the milled catalyst precursor to obtain precursor powder; and calcining and cooling the precursor powder to obtain the aluminum-air battery cathode catalyst. The preparation methodis simple, the raw materials are low in price, and the production cost of the battery material is greatly reduced; moreover, the Ag-Ni double-doped carbon-loaded manganese catalyst is prepared, the catalytic activity is further improved on the basis of maintaining the high catalytic activity of the Ag-based catalyst, and the oxygen reduction performance is excellent, so that the discharge performance of the aluminum-air battery is improved.

Description

technical field [0001] The invention relates to the technical field of aluminum-air batteries, in particular to an aluminum-air battery cathode catalyst and a preparation method thereof. Background technique [0002] With the depletion of fossil energy, the development of new energy has become a top priority. Metal-air batteries use active metals as anodes for electron loss reactions, absorb oxygen in the air as cathodes for oxygen reduction reactions, and do not emit any pollution during battery discharge. It is a clean and efficient energy system. Since the theoretical energy density of aluminum-air batteries is only lower than that of lithium-air batteries in metal-air batteries, and aluminum is more abundant and inexpensive than metal lithium, aluminum-air batteries have broad application prospects. [0003] At present, a major problem affecting the industrial production of aluminum-air batteries is the serious polarization of the air electrodes. The reason for this ph...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M4/88H01M12/06
CPCH01M4/9041H01M4/9083H01M4/88H01M12/06Y02E60/50
Inventor 张钧李荣荣张志刚李小丽刘保银
Owner 郑州佛光发电设备股份有限公司
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