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Three-dimensional-structured sulfur-copper compound/carbon fiber composite material and preparation method and application thereof

A composite material and three-dimensional structure technology, applied in the manufacture of hybrid/electric double layer capacitors, nanotechnology for materials and surface science, hybrid capacitor electrodes, etc., can solve the problem that the electrochemical activity has not been substantially improved, the copper sulfide ratio Small surface area, low loading of active substances, etc., to achieve the effects of easy large-scale implementation, high production efficiency, and improved electrical conductivity

Active Publication Date: 2018-03-13
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing three-dimensional composite materials generally have defects such as complicated preparation process and high energy consumption equipment.
For example, some researchers combined copper sulfide and polypyridine PPy conductive materials to obtain a PPy / copper sulfide composite material. The conductivity and electrochemical performance of the composite material were improved compared with polypyridine and copper sulfide, but due to The specific surface area is small, and the mechanical mixing makes the capacity not high
In addition, some researchers have proposed composite materials formed by combining copper sulfide and carbon fibers, but most of these composite materials require high-energy-consuming hydrothermal reactions to prepare, and most of them are one-dimensional nanowires, nanorods or mechanical composites. structure, its specific surface area is relatively low, resulting in low active material loading, and the electrochemical activity has not been substantially improved

Method used

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  • Three-dimensional-structured sulfur-copper compound/carbon fiber composite material and preparation method and application thereof
  • Three-dimensional-structured sulfur-copper compound/carbon fiber composite material and preparation method and application thereof
  • Three-dimensional-structured sulfur-copper compound/carbon fiber composite material and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] First, about 2 mmol of CuCl 2 2H 2 O was stirred in 5 ml of dimethyl diamide (DMF) until dissolved, then about 1 g of polyacrylonitrile (PAN) was added and stirred for 12 hours to obtain a uniform spinning solution.

[0063] Build the electrospinning equipment, use DC high-voltage power supply, use aluminum foil as the collector and 5ml needle tube as the spinning generator, put the aforementioned spinning solution into the needle tube, introduce one pole of the DC power supply; connect the other pole to the collection device Aluminum foil, start electrospinning, select voltage 8-16Kv, flow rate 1-3ml / h, collector distance from spinning generator 8-16cm, temperature and humidity controlled at 25-40°C and 30-45%, to obtain spinning material .

[0064] The obtained spinning material is wrapped in aluminum foil in a muffle furnace and calcined in air at 250-260°C for 1-3 hours, and then calcined in a tube furnace at 600-650°C under argon for 1-3 hours to obtain a precurs...

Embodiment 2

[0066] First add 1.5mmol of CuSO 4 ·5H 2 O was stirred in 6 ml of dimethyl diamide (DMF) until dissolved, then 1 g of polyacrylonitrile (PAN) was added and stirred for 12 hours to obtain a uniform spinning solution.

[0067] Build the electrospinning equipment, use a DC high-voltage power supply, use an aluminum foil collector and a 5ml needle tube as the spinning generation device, put the aforementioned spinning solution into the needle tube, introduce one pole of the DC power supply; connect the other pole to the collection device Aluminum foil, start electrospinning, select voltage 6-16Kv, flow rate 1-3ml / h, collector 8-16cm away from spinning generator, temperature and humidity controlled at 20-40°C and 30-45%, to obtain spinning material .

[0068] Wrap the above-mentioned spinning material with aluminum foil in a muffle furnace and calcinate it in the air at 270-280°C for 1-3 hours, and then calcinate it in a tube furnace at 700-750°C under argon for 1-3 hours to obta...

Embodiment 3

[0070] First, 2.5mmol of Cu(CH 3 COO) 2 Stir in 5 ml of dimethyl diamide (DMF) until dissolved, then add 1 g of polyacrylonitrile (PAN) and stir for 12 hours to obtain a uniform spinning solution.

[0071] Build the electrospinning equipment, use a DC high-voltage power supply, use an aluminum foil collector and a 5ml needle tube as the spinning generation device, put the aforementioned spinning solution into the needle tube, introduce one pole of the DC power supply; connect the other pole to the collection device Aluminum foil, start electrospinning, choose a voltage of 6-16Kv, a flow rate of 1-3ml / h, the collector is 8-16cm away from the spinning generator, and the temperature and humidity are controlled at 25-40°C and 30-45%. The obtained material is wrapped in aluminum foil in a muffle furnace and calcined in the air at 260-270°C for 1-3 hours, and then calcined in a tube furnace at 750-800°C under argon for 1-3 hours to obtain a precursor material, which is cut into a s...

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Abstract

The invention discloses a three-dimensional-structured sulfur-copper compound / carbon fiber composite material and a preparation method and an application thereof. The composite material comprises a conductive substrate network mainly formed by carbon fibers, and sulfur-copper compound nanosheets for coating the surfaces of the carbon fibers. The preparation method comprises the steps of dissolvinga copper source and a carbon source into an organic solvent to form a uniform spinning solution; performing processing on the spinning solution by an electrostatic spinning method to obtain a spinning material; performing pre-oxidization and carbonization treatment on the spinning material in sequence to obtain a three-dimensional composite material precursor; and performing a mixed reaction on the precursor and a sulfur source solution to obtain the composite material. The three-dimensional-structured sulfur-copper compound / carbon fiber composite material disclosed in the invention has the advantages of large specific surface area, high active material loading amount, excellent conductivity and the like, and can be used for establishing a supercapacitor with high capacity; and in addition, the preparation process is simple and easy to control, the production efficiency is high, the cost is low, and large-scale implementation can be facilitated.

Description

technical field [0001] The present application specifically relates to a three-dimensional structural sulfur-copper compound / carbon fiber composite material, its preparation method and application, such as an electrode obtained by using it as a raw material and a supercapacitor including the electrode. Background technique [0002] Composite materials based on three-dimensional structures such as sulfur-copper compounds are considered to be a class of materials with great development potential because of their high specific surface area. However, the existing three-dimensional composite materials generally have defects such as complex preparation process and high energy consumption equipment. For example, some researchers combined copper sulfide and polypyridine PPy conductive materials to obtain PPy / copper sulfide composite materials. The specific surface area is small, and the mechanical mixing makes the capacity not high. In addition, some researchers have proposed comp...

Claims

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Application Information

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IPC IPC(8): H01G11/36H01G11/30H01G11/86B82Y30/00
CPCB82Y30/00H01G11/30H01G11/36H01G11/86Y02E60/13
Inventor 张跃钢李继元刘美男潘争辉侯远杨洁
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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