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Boron nitride/ Argentum/ carbon nanotube composite material and preparation method and purpose thereof

A composite material and immobilization technology, applied in the field of electrocatalytic materials, can solve problems such as few reports on electrochemical performance, and achieve the effects of high-efficiency electrocatalytic oxygen reduction performance, good electrochemical stability, and good adsorption performance

Active Publication Date: 2018-07-17
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on the synthesis of boron nitride-metal-carbon nanotube composites and their application in fuel cells, and there are few reports on the testing of related electrochemical properties.

Method used

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  • Boron nitride/ Argentum/ carbon nanotube composite material and preparation method and purpose thereof
  • Boron nitride/ Argentum/ carbon nanotube composite material and preparation method and purpose thereof
  • Boron nitride/ Argentum/ carbon nanotube composite material and preparation method and purpose thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A BN / Ag / CNT composite material, metal Ag is evenly attached between BN sheets and on the surface of the sheets, and CNTs fix Ag and BN to form a cage structure. Among them, the molar ratio of BN, Ag and CNT is 1:2:1.

[0043] Its preparation method comprises the following steps:

[0044] (1) Add 30mL of deionized water into a 100mL small beaker, while stirring with a magnetic stirrer, add 1.6987g (0.01mol) of AgNO 3 , stirred until dissolved, a colorless uniform liquid was obtained, and concentrated ammonia water was slowly added dropwise until a precipitate was formed and then dissolved until the precipitate was dissolved to obtain a silver ammine ion solution;

[0045] (2) Add 2 mL of ethylene glycol, 0.06 g (0.005 mol) of carbon nanotubes, and 0.124 g (0.005 mol) of hexagonal boron nitride to the silver ammonium ion solution, stir for 2 min, and then sonicate for 30 min to make the mixture uniform;

[0046] (3) At room temperature, slowly add 30ml of 0.1mol / L sodiu...

Embodiment 2

[0051] The preparation method of the BN / Ag / CNT composite material in this example is the same as Example 1. The difference from Example 1 is that step (3) was vacuum-dried at 90° C. for 5 h, and after grinding, under an argon atmosphere, the Calcined at 850°C for 1.5h in a tube furnace.

Embodiment 3

[0053] The preparation method of the BN / Ag / CNT composite material in this example is the same as that of Example 1. The difference from Example 1 is that in step (3), vacuum drying was carried out at 80° C. for 6 h, and after grinding, under an argon atmosphere, the Calcined at 800°C for 3h in a tube furnace.

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PUM

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Abstract

The invention discloses a Boron nitride / Argentum / carbon nanotube composite material, and a preparation method and purpose thereof, and belongs to the technical field of electroactive materials. In the Boron nitride / Argentum / carbon nanotube composite material, Ag uniformly adheres the surfaces of Boron nitride lamellas between the Boron nitride lamellas, and CNT fixes the Ag and Boron nitride.The preparation method has the advantages that the overall reaction condition is mild, no organic solvent is adopted, the method is safe and environmental, the post-treatment is simple, the technological process is short, the energy consumption is low, and the cost is low. The prepared Boron nitride / Argentum / carbon nanotube composite material has high electrocatalytic oxygen reduction performance and better electrochemical stability.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic materials, and in particular relates to a BN / Ag / CNT composite material and its preparation method and application. Background technique [0002] With the development of the economy and the continuous improvement of living standards, people's demand for energy is getting higher and higher. Improving energy utilization efficiency is no longer the only criterion, and people are paying more and more attention to the use of clean energy. [0003] A fuel cell is a clean, efficient device capable of continuous high-power discharge. Chemical energy can be directly converted into electrical energy without the combustion process, so it is not limited by the Carnot cycle. In addition, another advantage of the fuel cell is that it hardly emits polluting gases, and the emission of carbon dioxide is about 40% less than that of normal power generation. These unique advantages of fuel cells make it re...

Claims

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Application Information

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IPC IPC(8): H01M4/90B82Y30/00
CPCB82Y30/00H01M4/9083Y02E60/50
Inventor 于洁玫黄太仲姜占坤齐蕾姜润田
Owner UNIV OF JINAN
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