CuO/rGO composite material having efficient electrocatalysis oxygen reducing performance

A composite material and hydroxide technology, applied in the field of electrocatalytic materials, can solve the problem of unexplored materials, and achieve the effects of simple post-processing process, low price, and cost reduction.

Inactive Publication Date: 2017-05-10
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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  • CuO/rGO composite material having efficient electrocatalysis oxygen reducing performance
  • CuO/rGO composite material having efficient electrocatalysis oxygen reducing performance
  • CuO/rGO composite material having efficient electrocatalysis oxygen reducing performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In a small 100 mL beaker, while stirring with a magnetic stirrer, add 40 mL of deionized water, and slowly add CuCl 2 2H 2 O 1.71 g (0.01 mol), NaOH 1.60 g (0.04 mol), stirred for 5 min to form a light blue homogeneous liquid, add 10 mL of absolute 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 180°C, 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 The device was distilled under reduced pressure at 50 °C for 20 min to obtain a black powdery solid, which is the CuO / rGO composite material with high-efficiency electrocatalytic oxygen reduction performance. It was detected that the mass ratio of CuO and rGO in the CuO / rGO composite was about 100:3.

[0045] Characterized by SEM (eg figure 2 As shown), the nano...

Embodiment 2

[0047] In a small 100 mL beaker, while stirring with a magnetic stirrer, add 40 mL of deionized water, and slowly add CuCl 2 2H 2 O 0.01mol, NaOH 0.04mol, stirred for 5 minutes, a light blue homogeneous liquid was formed, added 10mL of absolute ethanol, 5mL of ethylene glycol and 8.3mL of 6g / L graphene oxide, fully stirred the solution (about 10 min), and Transfer the reaction solution into a 100 ml autoclave, heat to 180°C, 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 it into a vacuum distillation device at 50°C to reduce After pressure distillation for 20 min, a black powdery solid was obtained, which is the CuO / rGO composite material with high-efficiency electrocatalytic oxygen reduction performance. It was detected that the mass ratio of CuO and rGO in the CuO / rGO composite was about 100:5.

[0048] Characterized by SEM (eg figure 2 As shown), the nano-Cu...

Embodiment 3

[0050] In a small 100 mL beaker, while stirring with a magnetic stirrer, add 40 mL of deionized water, and slowly add CuCl 2 2H 2 O 0.01mol, NaOH 0.04mol, stirred for 5 minutes, a light blue uniform liquid was formed, added 10mL of absolute ethanol, 5mL of ethylene glycol and 6.7mL of 6g / L graphene oxide, fully stirred the solution (about 10 min), and Transfer the reaction solution into a 100 ml autoclave, heat to 180°C, 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 it into a vacuum distillation device at 50°C to reduce After pressure distillation for 20 min, a black powdery solid was obtained, which is the CuO / rGO composite material with high-efficiency electrocatalytic oxygen reduction performance. It was detected that the mass ratio of CuO and rGO in the CuO / rGO composite was about 100:4.

[0051] Characterized by SEM (eg figure 2 As shown), the nano-CuO is...

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Abstract

The invention relates to a CuO/rGO composite material having efficient electrocatalysis oxygen reducing performance and belongs to the technical field of electrocatalysis materials. Nano CuO particles are attached onto a reduced-oxidized graphene sheet layer, a mass ratio of nano CuO and rGO is 100:3-5, size of the nano CuO particles is 6-10nm, the reduced-oxidized graphene sheet layer is a single sheet layer, and the CuO/rGO composite material has electrocatalysis oxygen reducing performance. Compared with existing oxygen reducing reaction catalysts, the CuO/rGO composite material has the advantage that cost is lowered obviously; the CuO/rGO composite material is an oxygen reducing reaction catalyst low in cost and excellent in electrocatalysis oxygen reducing performance. The CuO/rGO composite material is synthesized by taking copper salt, hydroxide and graphene oxide as raw materials, deionized water and anhydrous alcohol as solvents and ethylene glycol as a dispersant and reductant and adopting a hydrothermal one-pot process. The raw materials are low in cost and easy to obtain, preparation operation is simple and easy to implement, aftertreatment process is simple, reaction parameters are easy to control, process is short, and energy consumption is low.

Description

technical field [0001] The invention relates to a CuO / rGO composite material with high-efficiency electrocatalytic oxygen reduction performance, belonging to the technical field of electrocatalytic materials. Background technique [0002] Today's society is in a stage of rapid development, and people's living standards are improving day by day, but there are also many problems, such as energy problems and environmental problems. In today's world, mastering energy is the greatest weapon for mastering development. However, my country's limited resources cannot meet people's unlimited needs for resources, especially the dependence on fossil fuels has led to the over-exploitation of petrochemical energy, the depletion of national reserves, and environmental pollution. And so on a series of questions. Batteries are a clean, safe, efficient, and pollution-free energy source that can replace fossil fuels to a certain extent. In 1839, Grove in England invented the fuel cell. After ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90H01M4/88B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/8817H01M4/9016H01M4/9025Y02E60/50
Inventor 于洁玫黄太仲刘宗明姜润田
Owner UNIV OF JINAN
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