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Preparation method and application of AgPtCo efficient nano electrocatalyst

An electrocatalyst and nanotechnology, applied in the direction of circuits, electrical components, battery electrodes, etc., can solve the problems of expensive metal catalysts, high preparation costs, and incapability of large-scale production, achieve good synergistic enhancement effects, and reduce preparation costs , the effect of reducing the dosage

Inactive Publication Date: 2020-04-24
王子韩
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Problems solved by technology

[0006] Although the above reports have solved the current problem of expensive noble metal catalysts, their preparation costs are high, and the high-temperature oil-phase synthesis or electrodeposition synthesis methods used cannot be mass-produced and are only suitable for laboratory research.

Method used

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  • Preparation method and application of AgPtCo efficient nano electrocatalyst
  • Preparation method and application of AgPtCo efficient nano electrocatalyst
  • Preparation method and application of AgPtCo efficient nano electrocatalyst

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preparation example Construction

[0026] A preparation method of AgPtCo efficient nano electrocatalyst, comprising the following steps:

[0027] 1) Disperse the washed silver nanowires in ethylene glycol solvent to obtain an ethylene glycol dispersion of silver nanowires; then add cobalt source and platinum source to it in turn, and control the dropping rate;

[0028] 2) Transfer the uniformly mixed reaction solution in step 1) to a temperature-controllable shaker for reaction;

[0029] 3) The gray reaction product after the reaction in step 2) is centrifuged and separated to obtain the final product AgPtCo high-efficiency nano-electrocatalyst.

Embodiment 1

[0031] Take some self-made silver nanowires, after washing with ethanol and deionized water several times, disperse them in ethylene glycol, control the concentration at 0.2 mg / mL, and add 20 drops / mL to them on a magnetic stirrer The cobalt chloride solution was added dropwise at a rate of 1 minute, and then chloroplatinic acid was added dropwise at a rate of 5 drops / minute, wherein a pipette with a volume of 1 mL was used for the dropwise addition reaction of the above solution. After the dropwise addition, continue to stir the reaction on a magnetic stirrer for 6 minutes, then transfer the mixed solution to a shaker that has been heated to 85°C, and set the rotation speed to 35 rpm, and react overnight under this condition. After the reaction, the reaction product was taken out, washed and separated by centrifugation with absolute ethanol, and the speed of the centrifuge was set at 4000 rpm, and finally the AgPtCo high-efficiency nanometer electrocatalyst could be obtained. ...

Embodiment 2

[0034] Take some self-made silver nanowires, after repeated washing with ethanol and deionized water, disperse them in ethylene glycol, control the concentration at 0.3mg / mL, and add 20 drops / mL to them on a magnetic stirrer The cobalt nitrate solution was added dropwise at a rate of 1 minute, and then platinum chloride was added dropwise thereto at a rate of 5 drops / minute, wherein a pipette with a volume of 1 mL was used for the dropwise addition reaction of the above solution. After the dropwise addition, continue to stir the reaction on a magnetic stirrer for 6 minutes, then transfer the mixed solution to a shaker that has been heated to 80°C, and set the rotation speed to 40 rpm, and react overnight under this condition. After the reaction, the reaction product was taken out, washed and separated by centrifugation with absolute ethanol, and the speed of the centrifuge was set at 4000 rpm, and finally the AgPtCo high-efficiency nanometer electrocatalyst could be obtained. ...

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Abstract

A preparation method of an AgPtCo efficient nano electrocatalyst comprises the following steps: (1) dispersing cleaned silver nanowires in an ethylene glycol solvent to obtain an ethylene glycol dispersion liquid of the silver nanowires; then, sequentially adding a cobalt source and a platinum source, and controlling the dropping speed; (2) transferring the uniformly mixed reaction solution in thestep (1) into a temperature-controllable shaking table for reaction; and (3) centrifugally washing and separating the grey reaction product after reaction in the step (2) to obtain the final productAgPtCo high-efficiency nano electrocatalyst.

Description

technical field [0001] The invention relates to the field of catalysts for fuel cells, in particular to the field of preparation of catalysts with low noble metal content, in particular to a preparation method and application of AgPtCo high-efficiency nanometer electrocatalysts. Background technique [0002] As we all know, fossil fuels, coal, oil, natural gas and other substances used by humans on a large scale are all highly polluting to the environment. Phenomena such as acid rain, forest fires, and extreme weather appear in various media reports, and many of the damages are irreversible, which makes the future uncertain. [0003] In order to avoid the continued deterioration of the environment, scientific researchers have conducted a lot of research on this, among which fuel cells are an ideal new energy supply method, which has good efficiency, safety, stability and low-carbon or zero-carbon emissions. Advantages, can be widely used in electric vehicles, mobile electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/92
CPCH01M4/8878H01M4/921Y02E60/50
Inventor 刘风光王子韩章文峰
Owner 王子韩
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