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Method for catalyzing ORR reaction based on COFs derived carbon nanotubes

A carbon nanotube and reaction technology, applied in the field of electrocatalytic oxygen reduction in the cathode part of fuel cells, can solve the problems of low Pt reserves and high price, etc.

Active Publication Date: 2020-12-04
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Pt has disadvantages such as low reserves and high price, so the key is to find a catalyst with low price and high ORR performance, so non-noble metal / metal-free carbon materials have attracted extensive attention.

Method used

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  • Method for catalyzing ORR reaction based on COFs derived carbon nanotubes
  • Method for catalyzing ORR reaction based on COFs derived carbon nanotubes
  • Method for catalyzing ORR reaction based on COFs derived carbon nanotubes

Examples

Experimental program
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Effect test

Embodiment 1

[0081] The application of carbon nanotubes derived from covalent organic frameworks (COFs) in the catalytic cathode oxygen reduction reaction includes the following steps: using carbon nanotubes derived from covalent organic frameworks (COFs) as a catalyst in the cathode oxygen reduction reaction; specifically: weighing 0.5 mg of carbon nanotube solid powder derived from covalent organic frameworks COFs was added to 80 microliters of isopropanol aqueous solution (volume ratio of isopropanol to water=3:1) and 5 microliters of perfluorosulfonic acid Nafion solution (mass fraction 5 %) in the mixed solution, ultrasonically uniform; then drop 10 microliters on an area of ​​0.192cm 2 The working electrode is obtained on the glassy carbon electrode; finally, the working electrode is applied to catalyze the oxygen evolution reaction in electrolyzed water.

[0082] The specific catalytic cathode oxygen reduction reaction test is to place the working electrode in a 0.1M potassium hydro...

Embodiment 2

[0088] An application of carbon nanotubes derived from covalent organic frameworks (COFs) in catalyzing cathode oxygen reduction reactions, comprising the following steps: using carbon nanotubes derived from covalent organic frameworks (COFs) as a catalyst in cathode oxygen reduction reactions; specifically: Weigh 0.5 mg of carbon nanotube solid powder derived from covalent organic frameworks COFs, add 80 microliters of isopropanol aqueous solution (volume ratio of isopropanol to water=3:1) and 5 microliters of perfluorosulfonic acid Nafion solution (mass Fraction 5%) in the mixed solution, ultrasonically uniform; then drop 10 microliters on an area of ​​0.192cm 2 The working electrode is obtained on the glassy carbon electrode; finally, the working electrode is applied to catalyze the oxygen evolution reaction in electrolyzed water. The specific catalytic cathode oxygen reduction reaction test is to place the working electrode in a 0.1M potassium hydroxide solution to test it...

Embodiment 3

[0094] An application of carbon nanotubes derived from covalent organic frameworks (COFs) in catalyzing cathode oxygen reduction reactions, comprising the following steps: using carbon nanotubes derived from covalent organic frameworks (COFs) as a catalyst in cathode oxygen reduction reactions; specifically: Weigh 0.5 mg of carbon nanotube solid powder derived from covalent organic frameworks COFs, add 80 microliters of isopropanol aqueous solution (volume ratio of isopropanol to water=3:1) and 5 microliters of perfluorosulfonic acid Nafion solution (mass Fraction 5%) in the mixed solution, ultrasonically uniform; then drop 10 microliters on an area of ​​0.192cm 2 The working electrode is obtained on the glassy carbon electrode; finally, the working electrode is applied to catalyze the oxygen evolution reaction in electrolyzed water. The specific catalytic cathode oxygen reduction reaction test is to place the working electrode in a 0.1M potassium hydroxide solution to test it...

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Abstract

The invention discloses a method for catalyzing ORR reaction based on COFs derived carbon nanotubes, and belongs to the field of electrocatalytic oxygen reduction of cathode parts of fuel cells. Application of the carbon nanotubes derived from the covalent organic frameworks COFs in the catalytic cathode oxygen reduction reaction comprises the following steps that the carbon nanotubes derived fromthe covalent organic frameworks COFs are used as catalysts to be applied to the cathode oxygen reduction reaction, and the adopted carbon nanotubes are derived from the COFs. Regulation and control of ORR activity are facilitated through regular and controllable metal / heteroatom doped or carbon tube diameter and wall thickness, good application prospects are achieved, and the solvothermal preparation method is simple and safe.

Description

technical field [0001] The invention relates to a method for catalyzing an ORR reaction based on COFs-derived carbon nanotubes, and belongs to the field of electrocatalytic oxygen reduction at the cathode part of a fuel cell. Background technique [0002] Traditional fossil fuels can no longer meet the needs of world economic development due to their limited reserves and a series of environmental problems caused by their utilization. There is an urgent need to change the way and structure of energy use, and to develop efficient, economical and environmentally friendly new energy utilization technologies. A fuel cell is a chemical device that can directly convert the chemical energy of a fuel (such as hydrogen, methanol, etc.) and an oxidant (oxygen, etc.) into electrical energy through an electrochemical reaction. It is highly efficient and pollution-free and has broad prospects. However, the electrochemical kinetics of the cathode oxygen reduction reaction (ORR) is sluggis...

Claims

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Application Information

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IPC IPC(8): H01M4/90B82Y40/00
CPCB82Y40/00H01M4/9008H01M4/9083Y02E60/50
Inventor 陆双龙甘志健杜明亮朱罕段芳
Owner JIANGNAN UNIV
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