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Cotton carbon cloth/nitrogen-doped nanocarbon/carbon nanotube flexible integrated electrode and preparation method and application thereof

A nitrogen-doped nanocarbon and carbon nanotube technology, applied in the field of electrocatalytic materials, can solve the problems of limited application of flexible zinc-air battery development, inapplicability, etc., and achieve excellent zinc-air battery performance, firm load structure, good The effect of interface conducting interface

Pending Publication Date: 2022-07-05
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for this type of method, it belongs to in-situ synthesis and is not suitable for various existing commercial powder catalysts. At present, these two types of methods limit the application of commercial powder catalysts in flexible integrated electrodes and flexible zinc - Development of air batteries

Method used

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  • Cotton carbon cloth/nitrogen-doped nanocarbon/carbon nanotube flexible integrated electrode and preparation method and application thereof
  • Cotton carbon cloth/nitrogen-doped nanocarbon/carbon nanotube flexible integrated electrode and preparation method and application thereof
  • Cotton carbon cloth/nitrogen-doped nanocarbon/carbon nanotube flexible integrated electrode and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The preparation method of CCC-NC-CNT-1.5 integrated electrode includes the following steps:

[0039] (1) Solution self-assembly process of powdered carbon nanotubes on a cotton flexible substrate: Add 0.01 g of carbon nanotube (CNT) powder and 5 mL of water into a beaker, and ultrasonically disperse it at room temperature for 5 min to make the carbon nanotube powder in Disperse evenly in the aqueous solution; then, add 1.5g of urea to the solution, and stir at room temperature until the urea (Urea) is completely dissolved to form a uniform mixed solution; finally, a piece of about 2.5*5cm in size 2 The cotton cloth was soaked in the mixed solution for 1 h to fully absorb the solution slurry, and the effective self-assembly and combination of powder carbon nanotubes on the cotton cloth was realized, and the uncarbonized cotton cloth+urea+carbon nanotube precursor sheet was obtained, Labeled as CC+Urea+CNT.

[0040] (2) Calcination and carbonization to obtain a solidly l...

Embodiment 2

[0045] Preparation method of CCC-NC-CNT-0.75 integrated electrode:

[0046] The difference with Example 1 is that in step (1), then, add urea to the solution, fully stir 10min at room temperature, until the urea is completely dissolved to form a homogeneous mixed solution; the amount of the added urea is changed to 0.75 g, the last obtained sample was labeled CCC-NC-CNT-0.75.

Embodiment 3

[0048] Preparation method of CCC-NC-CNT-3 integrated electrode:

[0049] The difference with Example 1 is that in step (1), then, add urea to the solution, fully stir 10min at room temperature, until the urea is completely dissolved to form a homogeneous mixed solution; the amount of the added urea is changed to 3 g, and the finally obtained sample was labeled as CCC-NC-CNT-3.

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Abstract

The invention discloses a cotton carbon cloth / nitrogen-doped nanocarbon / carbon nanotube flexible integrated electrode and a preparation method and application thereof. The electrode is composed of a cotton carbon cloth substrate, in-situ synthesized nitrogen-doped nanocarbon and a carbon nanotube, and is obtained by calcining cotton cloth containing urea and the carbon nanotube in an inert atmosphere; the cotton carbon cloth substrate is of an interwoven flexible three-dimensional structure, and the fiber diameter is 5-20 microns; the nitrogen-doped nanocarbon is strip-shaped graphite carbon and is of a net-shaped cross-linked structure; the tube diameter of the carbon nano tube is 5-10nm, and finally, the carbon nano tube is uniformly and firmly adhered to the cotton carbon cloth substrate fiber by the net-shaped nitrogen-doped nano carbon. The electrode provided by the invention has a good conductive transmission interface and abundant active sites, is used as a positive electrode catalyst of a liquid and flexible rechargeable zinc-air battery, and has charge-discharge potential difference and cycle life exceeding those of a CCC-CNT contrast, commercial platinum carbon and iridium dioxide.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic materials, and in particular relates to a cotton carbon cloth / nitrogen-doped nano-carbon / carbon nanotube flexible integrated electrode material and a preparation method and application thereof. Background technique [0002] Zinc-air batteries are considered to be a promising next-generation energy storage power source due to their high theoretical energy density, environmental friendliness, high safety, and low cost. In practical use cases, high-energy-density Zn-air batteries can adapt to some mechanical deformations with a lower sacrifice of electrochemical performance due to their safe water system and small size flexibility. It has broader application prospects in energy devices. Studies have shown that both the catalytic activity and structural issues of the air cathode are the main factors affecting the energy efficiency and cycle life of flexible zinc-air batteries. Therefore, des...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/90H01M4/96B82Y30/00
CPCH01M4/96H01M4/90H01M4/8825B82Y30/00H01M2004/8689
Inventor 郑祥俊钱宇航张俊豪史文花毛晨
Owner JIANGSU UNIV OF SCI & TECH
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