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Preparation method and application of porous Pd-PdO nanorod

A technology of nanorods and potassium chloropalladate, which is applied in the direction of electrical components, battery electrodes, circuits, etc., can solve the problem that it is difficult to effectively control the ratio of Pd and O in Pd-PdO nanorods, and achieve enhanced methanol oxidation reaction activity, The preparation method is simple and green, and the effect of high catalytic activity

Pending Publication Date: 2022-01-07
先进能源产业研究院(广州)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, on the basis of oxidation treatment, the existing self-template technology is difficult to effectively control the ratio of Pd and O in Pd-PdO nanorods.

Method used

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  • Preparation method and application of porous Pd-PdO nanorod
  • Preparation method and application of porous Pd-PdO nanorod
  • Preparation method and application of porous Pd-PdO nanorod

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Pour 2mL of 0.05mol / L ethanol solution of 1,10-phenanthroline into 1mL of 0.05mol / L K 2 PdCl 4 Mix the aqueous solution evenly, and let the resulting mixture stand for 1 to 2 minutes to make K 2 PdCl 4 Fully complexed with 1,10-phenanthroline to form a 1,10-phenanthroline-palladium complex, ultrasonicated for 10 minutes to make the size uniform; then centrifuged and washed with a 1:1 hydrated ethanol mixture for 3 Then pour it into a magnetic boat and dry it in a 60°C oven; finally put the magnetic boat into a tube furnace, calcinate at 260°C under air conditions for 2 hours, centrifuge, wash, and vacuum dry to obtain the product.

[0027] Depend on figure 1 It can be seen that the obtained product is a mixture of Pd and PdO.

[0028] Depend on figure 2 It can be seen that the obtained product is a one-dimensional rod-like structure.

[0029] pass image 3 After observation, it can be seen that the surface of Pd-PdO nanorods is rough and has many holes.

[0030...

Embodiment 2

[0034] Pour 6mL 0.05mol / L 1,10-phenanthroline ethanol solution into 3mL 0.05mol / L K 2 PdCl 4 Mix the aqueous solution evenly, and let the resulting mixture stand for 1 to 2 minutes to make K 2 PdCl 4 Fully complexed with 1,10-phenanthroline to form a 1,10-phenanthroline-palladium complex, ultrasonicated for 10 minutes to make the size uniform; then centrifuged and washed with a 1:1 hydrated ethanol mixture for 3 Then pour it into a magnetic boat and dry it in an oven at 60°C; finally put the magnetic boat into a tube furnace, calcinate at 260°C under air conditions for 2 hours, centrifuge, wash, and dry in vacuum to obtain porous Pd-PdO nanorods. See Figure 4 .

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Abstract

The invention belongs to the technical field of fuel cells, and relates to a preparation method and application of a porous Pd-PdO nanorod. The preparation method comprises the following steps of: mixing 1, 10-phenanthroline serving as a complexing agent, potassium chloropalladite serving as a palladium source and ethanol and water serving as solvents at normal temperature to obtain a 1, 10-phenanthroline-palladium complex precursor; and calcining the 1, 10-phenanthroline-palladium complex precursor at high temperature under an air condition to obtain the porous Pd-PdO nanorod. The porous Pd-PdO nanorod obtained by the preparation method shows enhanced methanol oxidation reaction activity.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a preparation method and application of porous Pd-PdO nanorods. Background technique [0002] The activity and stability of electrocatalysts used for methanol oxidation in the field of alkaline direct methanol fuel cells are crucial to the application and development of alkaline direct methanol fuel cells. The current state-of-the-art platinum-based Pt-based anode electrocatalysts suffer from sluggish methanol oxidation reaction kinetics in direct methanol fuel cells. In contrast, in alkaline media, Pd-based nanostructures showed comparable or even higher electrical activity than Pt-based nanostructures, which was attributed to the better resistance of Pd-based nanomaterials to CO poisoning. [0003] The activity of electrocatalysts is highly correlated with their morphology and composition, and proper morphology control of Pd-based nanostructures is an effective ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92
CPCH01M4/923H01M4/921Y02E60/50
Inventor 王新陈忠伟
Owner 先进能源产业研究院(广州)有限公司
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