Three-dimensional ordered macroporous molybdenum disulfide/carbon composite flexible electrode material and preparation method and application thereof

A carbon composite material, molybdenum disulfide technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as dissolution and re-stacking, and achieve excellent electrochemical performance, high rate performance and stability, and good cycle. Effects of performance and mechanical properties

Active Publication Date: 2017-05-17
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But dissolution and redeposition are still unresolved
In addition, the construction of molybdenum

Method used

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  • Three-dimensional ordered macroporous molybdenum disulfide/carbon composite flexible electrode material and preparation method and application thereof
  • Three-dimensional ordered macroporous molybdenum disulfide/carbon composite flexible electrode material and preparation method and application thereof
  • Three-dimensional ordered macroporous molybdenum disulfide/carbon composite flexible electrode material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Dissolve 5ml of styrene, 0.5ml of acrylic acid, and 120mg of sodium bicarbonate in 100ml of water, heat up to 70°C, add 0.1g of ammonium persulfate, stir for 7 hours under an inert atmosphere, and dialyze for 3 days to obtain carboxylated styrene nanospheres.

[0025] 20 mg of sucrose, 40 mg of sodium molybdate, and 0.2 g of carboxylated polystyrene nanospheres were dissolved in 5 ml of deionized water, and stirred for 2 hours to obtain a precursor solution.

[0026] The carbon fiber cloth was immersed in the polyaniline / N,N dimethylpyrrolidone solution with a mass fraction of 0.0025wt% for 1 h, and after drying, it was immersed in the precursor solution for 1 h. Take it out and dry it in a vacuum oven. get the product.

[0027] The product obtained after drying was calcined at high temperature in sulfur vapor, and reacted at 600°C for 2 hours to realize the preparation of three-dimensional ordered macroporous molybdenum disulfide / carbon composite flexible electrode. ...

Embodiment 2

[0030] Dissolve 3ml of styrene, 0.1ml of acrylic acid, and 24mg of sodium bicarbonate in 100m of water, raise the temperature to 60°C, add 0.3g of ammonium persulfate, stir for 5h under the protection of an inert atmosphere, and dialyze for 3 days to obtain carboxylated styrene nanospheres.

[0031] 10 mg of glucose, 80 mg of ammonium molybdate, and 0.1 g of carboxylated polystyrene nanospheres were dissolved in 5 ml of deionized water, and stirred for 3 hours to obtain a precursor solution.

[0032] The carbon fiber cloth was immersed in the dopamine / tromethamine solution with a mass fraction of 0.005wt% for 3 hours, and after drying, it was immersed in the precursor solution for 3 hours. Take it out and dry it in a vacuum oven. get the product.

[0033] The product obtained after drying was calcined at high temperature in thiourea vapor, and reacted at 850° C. for 6 hours to realize the preparation of three-dimensional ordered macroporous molybdenum disulfide / carbon composi...

Embodiment 3

[0035] Dissolve 1ml of styrene, 0.3ml of acrylic acid, and 40mg of sodium bicarbonate in 100m of water, raise the temperature to 70°C, add 0.5g of ammonium persulfate, stir for 10 hours under an inert atmosphere, and dialyze for 3 days to obtain carboxylated styrene nanospheres.

[0036] 40 mg of sucrose, 160 mg of ammonium thiomolybdate, and 0.5 g of carboxylated polystyrene nanospheres were dissolved in 5 ml of deionized water, and stirred for 6 hours to obtain a precursor solution.

[0037] The carbon fiber cloth was immersed in the polyaniline / N,N dimethylpyrrolidone solution with a mass fraction of 0.01wt% for 6 hours, and after drying, it was immersed in the precursor solution for 6 hours. Take it out and dry it in a vacuum oven. get the product.

[0038] The product obtained after drying is calcined at high temperature in sulfur vapor, and reacted at 1000°C for 10 hours to realize the preparation of three-dimensional ordered macroporous molybdenum disulfide / carbon comp...

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Abstract

The invention discloses a preparation method and application of a three-dimensional ordered macroporous molybdenum disulfide/carbon composite flexible electrode. Through an amine compound solution for processing carbon cloth, the carbon cloth has positive charges and then is impregnated in an aqueous solution composed of polystyrene spheres with negative charges, a molybdenum source and a carbon source precursor; and during the subsequent calcining process, through matching generating rate of molybdenum disulfide and carbonization rate of the precursor, assembling of a three-dimensional ordered macroporous molybdenum disulfide/carbon embedded structure composite material on the carbon cloth is realized. The prepared electrodes combines high-performance electrode material, flexibility and integrated design without the need of using inactive substances such as a binder, a conductive agent, etc., remarkably enhances utilization rate of active substances, shows excellent electrochemical lithium storage capacity, and is expected to be applied in the field of flexible electronics, etc.

Description

technical field [0001] The invention relates to the field of new energy materials, and relates to a flexible electrode and its preparation method and application, in particular to the preparation of a three-dimensional ordered macroporous molybdenum disulfide / carbon composite flexible electrode material and its application in lithium ion batteries. Background technique [0002] With the improvement of people's living and material standards, people's demand for electronic equipment is increasing day by day. Flexibility and miniaturization have become the development trend of electronic equipment in the future. The development of flexible lithium-ion batteries is of great significance in promoting the development of future electronic devices. At present, the development of flexible lithium-ion batteries has problems such as low specific capacity, short cycle life, and weak combination of active materials and current collectors. Therefore, the development of flexible lithium-...

Claims

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Application Information

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IPC IPC(8): H01M4/62H01M4/136H01M4/1397
CPCH01M4/136H01M4/1397H01M4/62H01M4/621Y02E60/10
Inventor 江浩邓宗南李春忠李宇刚
Owner EAST CHINA UNIV OF SCI & TECH
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