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A cuo-nio/rgo composite with high-efficiency electrocatalytic oxygen reduction performance

A composite material, cuo-nio technology, applied in the direction of circuits, electrical components, battery electrodes, etc., can solve the problems of undiscovered materials, and achieve the effect of simple post-processing process, excellent performance and low energy consumption

Active Publication Date: 2019-02-19
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But at this stage, there is still a lot of room for research on alternative materials for Pt / C catalysts, and many materials with low prices and great potential have not yet been discovered.

Method used

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  • A cuo-nio/rgo composite with high-efficiency electrocatalytic oxygen reduction performance
  • A cuo-nio/rgo composite with high-efficiency electrocatalytic oxygen reduction performance
  • A cuo-nio/rgo composite with high-efficiency electrocatalytic oxygen reduction performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In a small 100 mL beaker, while stirring with a magnetic stirrer, add 40 mL of deionized water, and slowly add 0.86 g (0.005 mol) of CuCl 2 2H 2 O, Ni(NO 3 ) 2 ·6H 2 O 1.46 g (0.005 mol) and NaOH 1.60 g (0.04 mol), stirred for 5 min to form a blue-green homogeneous liquid, added 10 mL of ethanol, 5 mL of ethylene glycol and 4 mL of 6 g / L graphene oxide to fully stir the solution ( about 10 min), transfer the reaction solution into a 100 ml autoclave, heat to 190 ºC, take it out after 24 hours at a constant temperature, wash the product three times with absolute ethanol, then wash three times with double distilled water, put into vacuum distillation Distilled under reduced pressure at 50 ºC for 20 min in the device to obtain a black powdery solid, which is the CuO-NiO / rGO composite material with high-efficiency electrocatalytic oxygen reduction performance. It has been tested that the mass ratio of CuO-NiO to rGO in the CuO-NiO / rGO composite is about 100:3, and the m...

Embodiment 2

[0050] In a small 100 mL beaker, while stirring with a magnetic stirrer, add 40 mL of deionized water, and slowly add 0.86 g (0.005 mol) of CuCl 2 2H 2 O, 1.46g (0.005mol) Ni(NO 3 ) 2 ·6H 2 O and 1.60 g (0.04 mol) NaOH, stirred for 5 min to form a blue-green homogeneous liquid, added 10 mL of ethanol, 5 mL of ethylene glycol, and 6 mL of 6 g / L graphene oxide and stirred the solution fully (about 10 min). The reaction solution was transferred to a 100 ml autoclave, heated to 190 ºC, and taken out after 24 hours at a constant temperature. The product was washed three times with absolute ethanol, and then washed three times with double distilled water, and then placed in a vacuum distillation device at 50 ºC. After pressure distillation for 20 min, a black powdery solid was obtained, which is the CuO-NiO / rGO composite material with high-efficiency electrocatalytic oxygen reduction performance. It has been detected that the mass ratio of CuO-NiO to rGO in the CuO-NiO / rGO compo...

Embodiment 3

[0053] In a small 100 mL beaker, while stirring with a magnetic stirrer, add 40 mL of deionized water, and slowly add 0.86 g (0.005 mol) of CuCl 2 2H 2 O, 1.46g (0.005mol) Ni(NO 3 ) 2 ·6H 2 O and 1.60 g (0.04 mol) NaOH, stirred for 5 min to form a blue-green homogeneous liquid, add 10 mL of ethanol, 5 mL of ethylene glycol and 5 mL of 6 g / L graphene oxide, and fully stir the solution (about 10 min) , transfer the reaction solution into a 100 ml autoclave, heat to 190ºC, take it out after 24 hours at a constant temperature, wash the product three times with absolute ethanol, then wash three times with twice distilled water, put it in a vacuum distillation device at 50ºC Distilled under reduced pressure for 20 min, a black powdery solid was obtained, which is the CuO-NiO / rGO composite material with high-efficiency electrocatalytic oxygen reduction performance. It has been detected that the mass ratio of CuO-NiO to rGO in the CuO-NiO / rGO composite is about 100:4, and the mola...

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Abstract

The invention relates to a CuO-NiO / rGO composite material with efficient electro-catalysis oxygen reduction performance, and belonging to the technical field of electro-catalysis materials. In the CuO-NiO / rGO composite material provided by the invention, CuO-NiO nanoparticles are attached to a reduction-oxidized graphene sheet layer, a mass ratio of the CuO-NiO nanoparticles to the rGO is 100:3-5, the sizes of the CuO-NiO nanoparticles are 6-10nm, and the reduction-oxidized graphene sheet layer is a single sheet layer; and the electro-catalysis oxygen reduction performance is provided. Compared with existing oxygen reduction reaction catalysts, the CuO-NiO / rGO composite material provided by the invention is significantly reduced in cost, and is the oxygen reduction reaction catalyst with low price and excellent electro-catalysis oxygen reduction performance. The CuO-NiO / rGO composite material provided by the invention adopts copper salts, nickel salts, hydroxides and oxidized graphene as materials, deionized water and absolute ethyl alcohol as solvents, and glycol as a dispersing agent and a reducing agent, and is synthesized by using a one-pot hydrothermal method. The CuO-NiO / rGO composite material provided by the invention is low in material price, prone to get materials, simple and easy in preparation operation, simple in aftertreatment process, prone to control reaction parameters, short in flow and low in energy consumption.

Description

technical field [0001] The invention relates to a CuO-NiO / rGO composite material with high-efficiency electrocatalytic oxygen reduction performance, belonging to the technical field of electrocatalytic materials. Background technique [0002] With the depletion of coal, oil and other resources on the earth and the increasingly serious environmental pollution, human beings are urgently looking for an alternative new energy source to solve these problems. Fuel cell power generation is a power generation device that can convert the chemical energy of fuel into electrical energy without burning, and is currently attracting the attention of researchers all over the world. Fuel cells have the advantages of high energy conversion efficiency and low pollution, which is conducive to reducing the excessive use of fossil fuels and protecting the earth's environment. [0003] For alkaline fuel cells, the oxygen reduction performance of cathode materials is a key technology restricting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M4/88
CPCH01M4/88H01M4/9016H01M4/9033Y02E60/50
Inventor 于洁玫刘宗明黄太仲姜润田
Owner UNIV OF JINAN
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