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

A composite material and solution technology is applied in the field of electrocatalytic materials to achieve the effects of good electrochemical stability, high-efficiency electrocatalytic oxygen reduction performance, and improved electrical conductivity.

Active Publication Date: 2020-07-03
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 related electrochemical performance tests.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A BN / Cu / CNT composite material, metal Cu is evenly attached between BN sheets and on the surface of the sheets, and CNTs fix Cu and BN to form a cage structure. Among them, the molar ratio of BN, Cu and CNT is 1:2:1.

[0042] Its preparation method comprises the following steps:

[0043] (1) Add 30mL of deionized water to a 100mL small beaker, while stirring with a magnetic stirrer, add 2.497g (0.01mol) of CuSO 4 ·5H 2 O, stirred until dissolved to obtain a light blue homogeneous liquid, slowly add concentrated ammonia water dropwise to produce a precipitate and then dissolve the precipitate to obtain a copper ammonium ion 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 copper ammine ion solution, stir for 2 min and then ultrasonically for 30 min to make the mixture uniform;

[0045] (3) At room temperature, slowly add 30ml of 0.1mol / L sodium borohydride solution dro...

Embodiment 2

[0050] The preparation method of the BN / Cu / CNT composite material in this example is the same as that of Example 1. The difference from Example 1 is that copper chloride is used as a raw material, and vacuum-dried at 90° C. for 5 hours in step (3). After grinding, , Calcined in a tube furnace at 850°C for 1.5h under argon atmosphere.

Embodiment 3

[0052] The preparation method of BN / Cu / CNT composite material in the present embodiment is identical with embodiment 1, differs from embodiment 1, adopts copper nitrate in step (1), in step (3) in vacuum drying at 80 ℃ for 6h, After grinding, it was calcined in a tube furnace at 800°C for 3h under argon atmosphere.

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Abstract

The invention discloses a BN / Cu / CNT composite material as well as a preparation method and use thereof, belonging to the technical field of electrocatalytic materials. In the BN / Cu / CNT composite material, Cu particles are evenly attached between BN flake layers and on the surfaces of the flake layers, and CNT is used for fixing Cu and BN. The BN / Cu / CNT composite provided by the invention has highelectrocatalytic oxygen reduction performance and has very good electrochemical stability. The preparation method is mild in whole reaction conditions, does not use an organic solvent, and is safe andenvironmentally friendly, simple in post-treatment, short in process and low in energy consumption; the raw materials are cheap and easy to obtain, so that the overall cost is obviously reduced.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic materials, and in particular relates to a BN / Cu / CNT composite material and its preparation method and application. Background technique [0002] After the reform and opening up, with the rapid growth of China's economy, the rapid development of social productivity, the advancement of science and technology, and the adjustment of industrial structure, China is also undergoing rapid urbanization, but in this process, energy consumption and environmental degradation have become unavoidable problem. In 2014, in my country's power supply structure, coal power accounted for 73%, hydropower accounted for 14.6%, nuclear power accounted for 2.4%, gas power accounted for 2.3%, wind power accounted for 1.97%, solar power accounted for 1.3%, and wave power accounted for 1.3%. Accounted for 1.1%, oil-fired power stations accounted for 0.8%, geothermal power generation, biomass power generation, etc. a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90
CPCH01M4/9041H01M4/9083Y02E60/50
Inventor 于洁玫黄太仲姜占坤齐蕾姜润田
Owner UNIV OF JINAN