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Non-platinum dendritic crystal-shaped ternary PdCuCo alloy nanometer catalyst used for fuel cell

An alloy catalyst, fuel cell technology, applied in nanotechnology for materials and surface science, electrical components, battery electrodes, etc., can solve the problems of rarity, high commercial cost, reduced catalytic activity, etc., to achieve excellent activity and stability The effect of stability, uniform morphology, and excellent alcohol tolerance

Active Publication Date: 2018-08-03
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to its rarity and high commercial cost, it has become one of the biggest obstacles to the commercialization of fuel cells; especially when metal Pt is used as a cathode catalyst for alcohol fuel cells, it will be poisoned by alcohols from the anode. Reduce catalytic activity, so finding cheaper and more resistant commercial alternative catalysts to alcohol poisoning has become an important development direction in the field of fuel cells
The present invention successfully synthesized a non-platinum, dendritic ternary PdCuCo alloy nanocatalyst for fuel cells in a liquid phase system, and there is no case for its synthesis method and shape control technology

Method used

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  • Non-platinum dendritic crystal-shaped ternary PdCuCo alloy nanometer catalyst used for fuel cell
  • Non-platinum dendritic crystal-shaped ternary PdCuCo alloy nanometer catalyst used for fuel cell
  • Non-platinum dendritic crystal-shaped ternary PdCuCo alloy nanometer catalyst used for fuel cell

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Embodiment 1

[0017] A kind of synthetic method of the non-platinum dendritic ternary PdCuCo alloy catalyst for fuel cell, comprises the steps:

[0018] (1) Add PVP with a mass of 10-200 mg to the ethylene glycol solution, and stir at room temperature for about 10 minutes until the solution is evenly mixed;

[0019] (2) Add the metal precursor palladium salt, copper salt and cobalt salt to the solution obtained in step (1), the amount of the metal precursor is 0.015~0.035mmol, stir for about 10 minutes until the solution is evenly mixed; The metal palladium salt precursor is Na 2 PdCl 4 Aqueous solution; metal copper salt precursor is CuCl 2 Aqueous solution, metal cobalt salt precursor is CoCl 2 Aqueous solution; The mol ratio of described palladium salt, copper salt and cobalt salt is 7:3:1;

[0020] (4) Add ammonia water to the solution obtained in (2), the volume of ammonia water is 0.1-1mL, stir for about 10 minutes, until the solution is evenly mixed;

[0021] (5) Transfer the so...

Embodiment 2

[0024] A kind of non-platinum dendritic ternary PdCuCo alloy catalyst synthesis method for fuel cell, comprises the steps:

[0025] (1) Add PVP with a mass of 10-200 mg to the ethylene glycol solution, and stir at room temperature for about 10 minutes until the solution is evenly mixed;

[0026] (2) Add metal precursor palladium salt, copper salt and cobalt salt to the solution obtained in step (1), the amount of metal precursor is 0.02~0.03mmol, stir for about 10 minutes until the solution is evenly mixed, palladium salt, The mol ratio of copper salt and cobalt salt is 2:1:1; Described metal palladium salt precursor is Na 2 PdCl 4 Aqueous solution; metal copper salt precursor is CuCl 2 Aqueous solution, metal cobalt salt precursor is CoCl 2 aqueous solution;

[0027] (3) Add ammonia water to the solution obtained in (2), the volume of ammonia water is 0.1-1mL, stir for about 10 minutes, until the solution is evenly mixed;

[0028] (4) Transfer the solution obtained in st...

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Abstract

The invention discloses a synthesis method of a non-platinum dendritic crystal-shaped ternary PdCuCo alloy nanometer catalyst used for a fuel cell. The synthesis method comprises the following steps of (1) adding PVP with the mass of 10-200mg into an ethylene glycol solution, and performing stirring at the room temperature for about 10min until the solution is uniformly mixed; (2) adding metal precursor palladium salt, copper salt and cobalt salt into the solution obtained in the step (1), wherein the amount of the metal precursor is 0.01-0.04mol; and performing stirring for about 10min untilthe solution is uniformly mixed; (3) adding ammonium hydroxide into the solution obtained in the step (2), wherein the volume of ammonium hydroxide is 0.05-1mL; and performing stirring for about 10minuntil the solution is uniformly mixed; (4) transferring the solution obtained in the step (3) into a high-pressure reaction kettle to be reacted for 4-16h at the temperature of 120-180 DEG C; and (5)performing cooling on the product obtained in the step (4), and then carrying out washing, centrifuging and separating to obtain the non-platinum dendritic crystal-shaped ternary PdCuCo nanometer alloy.

Description

technical field [0001] The invention relates to the synthesis and application of a non-platinum, dendritic ternary PdCuCo alloy nano catalyst for fuel cells. Background technique [0002] At present, metal Pt is the best catalyst for fuel cells and can be used as anode and cathode catalysts for fuel cells. However, due to its rarity and high commercial cost, it has become one of the biggest obstacles to the commercialization of fuel cells; especially when metal Pt is used as a cathode catalyst for alcohol fuel cells, it will be poisoned by alcohols from the anode. Decrease the catalytic activity, so finding a commercial alternative catalyst that is cheaper and more resistant to alcohol poisoning has become an important development direction in the field of fuel cells. The present invention successfully synthesizes a non-platinum, dendritic ternary PdCuCo alloy nanocatalyst for fuel cells in a liquid phase system, and there is no case for its synthesis method and shape contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92B82Y30/00
CPCB82Y30/00H01M4/921Y02E60/50
Inventor 袁强李朝忠
Owner GUIZHOU UNIV
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