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Preparation method and application of Ni and Co co-doped carbon-based multifunctional electrocatalyst material

An electrocatalyst and multi-functional technology, applied in the field of energy, can solve the problems of high cost of noble metal-based catalysts, scarcity of resources, and inability to prepare and apply large-scale, to improve mass transfer efficiency and electron transfer efficiency, improve catalytic efficiency, shape controllable effect

Inactive Publication Date: 2021-10-08
HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a Ni, Co co-doped carbon-based multifunctional electrocatalyst material preparation method and its application to solve the problems of high cost of noble metal-based catalysts, scarcity of resources, and inability to prepare and apply on a large scale.

Method used

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  • Preparation method and application of Ni and Co co-doped carbon-based multifunctional electrocatalyst material
  • Preparation method and application of Ni and Co co-doped carbon-based multifunctional electrocatalyst material
  • Preparation method and application of Ni and Co co-doped carbon-based multifunctional electrocatalyst material

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Effect test

Embodiment 1

[0035] Step 1: Take styrene: polyvinylpyrrolidone with a mass ratio of 10:1 and dissolve it in 80ml of deionized water, pour it into a three-neck flask and mechanically stir at 300rpm for 30min, during which time high-purity nitrogen gas is continuously introduced to remove air. Then add 0.35g of potassium persulfate dissolved in 20ml of deionized water, and raise the temperature to 70°C, and heat to reflux for 24h. Collect the lotion.

[0036] Step 2: Ultrasonically disperse 0.2 g of the polystyrene microspheres obtained in Step 1 in 30 ml of 0.05 M sulfuric acid solution, add 0.2 ml of aniline and maintain magnetic stirring at 200 rpm for 1 h, then add 20 ml of 0.5 g of ammonium persulfate 0.05M sulfuric acid solution, and keep magnetic stirring at room temperature. After 10 h, it was washed with deionized water and ethanol, and the powder was collected by centrifugation at 9000 rpm and dried.

[0037] Step 3, take 200mg of the powder obtained in step 2 and ultrasonically ...

Embodiment 2

[0040] Step 1: Take styrene: polyvinylpyrrolidone with a mass ratio of 6:1 and dissolve it in 100ml of deionized water, pour it into a three-neck flask and mechanically stir at 380rpm for 30min, during which time high-purity nitrogen gas is continuously introduced to remove air. Then, 0.23 g of potassium persulfate dissolved in 20 ml of deionized water was added, and the temperature was raised to 70° C., and heated to reflux for 12 h. The obtained emulsion was centrifuged at 10000 rpm to collect the emulsion.

[0041] Step 2: Ultrasonically disperse 0.1 g of the polystyrene microspheres obtained in Step 1 in 40 ml of 0.05 M sulfuric acid solution, add 0.1 ml of aniline and maintain magnetic stirring at 200 rpm for 1 h, then add 30 ml of 0.25 g of ammonium persulfate 0.05M sulfuric acid solution, and keep magnetic stirring at room temperature. After 10 h, it was washed with deionized water and ethanol, and the powder was collected by centrifugation at 9000 rpm and dried.

[0...

Embodiment 3

[0045] Step 1: Take styrene: polyvinylpyrrolidone with a mass ratio of 11:1.5 and dissolve it in 80ml of deionized water, pour it into a three-neck flask and mechanically stir at 400rpm for 30min, during which time high-purity nitrogen gas is continuously introduced to remove air. Then, 0.37 g of potassium persulfate dissolved in 20 ml of deionized water was added, and the temperature was raised to 70° C., and heated to reflux for 10 h. The resulting emulsion was centrifuged at 8000 rpm to collect the emulsion.

[0046] Step 2: Ultrasonically disperse 0.2 g of the polystyrene microspheres obtained in Step 1 in 30 ml of 0.05 M sulfuric acid solution, add 0.2 ml of aniline and maintain magnetic stirring at 200 rpm for 1 h, then add 20 ml of 0.5 g of ammonium persulfate 0.05M sulfuric acid solution, and keep magnetic stirring at room temperature. After 12 hours, it was washed with deionized water and ethanol, and the powder was collected by centrifugation at 9000 rpm and dried. ...

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Abstract

The invention discloses a preparation method and application of a Ni and Co co-doped carbon-based multifunctional electrocatalyst material. The preparation method comprises the following steps: (1) preparing a monodisperse polystyrene microsphere template; (2) growing polyaniline on the surface of the polystyrene microsphere template in-situ; (3) adsorbing Ni<2+> and Co<2+> metal ions by the polystyrene-polyaniline microspheres; and (4) performing high-temperature carbonization to prepare the Ni and Co co-doped carbon-based multifunctional electrocatalyst material. The preparation method has the advantages that the preparation method is simple, the cost is low, and the catalyst has the characteristics of efficient performance, good chemical stability, good conductivity and the like; and the method is green and environment-friendly, non-noble metal is used for replacing noble metal to be applied to production, and the method has important application value in the new energy fields of batteries, water electrolysis hydrogen production and the like.

Description

technical field [0001] The invention belongs to the field of energy technology, and in particular relates to a method for preparing a Ni and Co co-doped carbon-based multifunctional electrocatalyst material and its application. Background technique [0002] The energy crisis and environmental pollution caused by the large-scale application of traditional fossil energy are becoming more and more serious, seriously affecting the development of human society. The development of new green and efficient new energy has become a hot spot in the field of energy research at home and abroad. As a new type of energy device, metal-air battery is considered to be an environmentally friendly energy utilization method that can replace traditional energy sources. It has the characteristics of stable performance, high safety, and high energy density; its battery efficiency is mainly affected by oxygen reduction reaction and The rate limiting of the oxygen evolution reaction. In order to inc...

Claims

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Application Information

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IPC IPC(8): B01J23/755C25B1/04C25B11/091H01M4/90
CPCB01J23/755H01M4/9041H01M4/9083C25B1/04C25B11/091B01J35/33Y02E60/36Y02E60/50
Inventor 金天旭陈广凯赵淑芝赵悌军马贵平
Owner HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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