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A kind of bn/cuag/cnt composite material and its preparation method and application

A technology of composite materials and immobilization, applied in the field of electrocatalytic materials, can solve the problems of rare electrochemical performance tests, and achieve the effects of high-efficiency electrocatalytic oxygen reduction performance, improved electrical conductivity, and good electrochemical stability

Active Publication Date: 2020-11-24
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 studies on the synthesis of boron nitride-metal-carbon nanotube composites and their application in fuel cells, and there are very few reports on related electrochemical performance tests.

Method used

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  • A kind of bn/cuag/cnt composite material and its preparation method and application
  • A kind of bn/cuag/cnt composite material and its preparation method and application
  • A kind of bn/cuag/cnt composite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A BN / CuAg / CNT composite material. Metal CuAg particles are uniformly attached between the BN sheets and the surface of the sheets, and CNT fixes Ag, Cu and BN to form a cage structure. Among them, the molar ratio of BN, Cu, Ag and CNT is 1:1:1:1.

[0042] The preparation method includes the following steps:

[0043] (1) Add 30mL deionized water into a 100mL small beaker, and while stirring with a magnetic stirrer, add 1.2080g (0.005mol) Cu(NO 3 ) 2 ·2H 2 O, 0.8494g (0.005mol) AgNO 3 , Stir until it dissolves to obtain a light blue uniform liquid, slowly add concentrated ammonia water until precipitation is generated and then the precipitation is dissolved to obtain a mixed solution;

[0044] (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 above-mentioned mixed solution, stir for 2 minutes and then ultrasound for 30 minutes to make the mixture uniform;

[0045] (3) At room temperature, slowly add ...

Embodiment 2

[0050] The preparation method of the BN / CuAg / CNT composite material in this example is the same as that in Example 1, except that in step (3), vacuum drying is performed at 90°C for 5 hours. After grinding, under argon atmosphere, Calcination in tube furnace at 850℃ for 1.5h.

Embodiment 3

[0052] The preparation method of the BN / CuAg / CNT composite material in this example is the same as that of Example 1, but the difference is that in step (3), vacuum drying is performed at 80°C for 6 hours. After grinding, under argon atmosphere, Calcined in a tube furnace at 800℃ for 3h.

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Abstract

The invention discloses a BN / CuAg / CNT composite material and a preparation method and an application thereof, and belongs to the technical field of an electro-catalysis material. The space between BNsheet layers and the surfaces of the sheet layers are uniformly adsorbed with Cu and Ag particles in the BN / CuAg / CNT composite material; and CNT has a fixing effect on Ag, Cu and BN. The BN / CuAg / CNT composite material has efficient electro-catalysis oxygen reduction performance and relatively high electrochemical stability; and the preparation method is mild in the overall reaction conditions, free of an organic solvent, safe and environment friendly, simple in post processing, short in flow and low in energy consumption, so that the total cost is obviously lowered.

Description

Technical field [0001] The invention belongs to the technical field of electrocatalytic materials, and specifically relates to a BN / CuAg / CNT composite material and a preparation method and application thereof. Background technique [0002] With the increasing shortage of fossil fuels and increasing ecological concerns, sustainable energy technologies have received more and more attention and attention. Among sustainable energy technologies, energy storage and conversion systems based on electrochemical technology have attracted much attention because of their low production costs, high energy conversion efficiency, strong reliability and low environmental pollution. The fuel cell is a device that directly converts the chemical energy in the fuel into electrical energy. The appearance of a fuel cell is similar to that of an ordinary battery, but in fact it cannot "storage" but is a "power plant". As long as it has electrodes, electrolytes and redox reactions, it can generate ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M4/90
CPCH01M4/8647H01M4/9041H01M4/9075Y02E60/50
Inventor 于洁玫黄太仲姜占坤齐蕾姜润田
Owner UNIV OF JINAN
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