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Method for preparing molybdenum disulfide/carbon composite multi-grade porous material

A technology of molybdenum disulfide and multi-level pores, which is applied in the direction of secondary batteries, electrochemical generators, hybrid capacitor electrodes, etc., can solve the problems of unseen supercapacitor applications and complicated preparation methods, and achieve avoidance of damage and simple preparation methods , the effect of multiple expansion spaces

Inactive Publication Date: 2017-06-13
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method of this patent is relatively complicated, and the structure of the prepared product is a molybdenum disulfide layer and a carbon hollow sphere, which is mainly used in lithium-ion batteries, and its application in supercapacitors has not been seen.

Method used

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  • Method for preparing molybdenum disulfide/carbon composite multi-grade porous material
  • Method for preparing molybdenum disulfide/carbon composite multi-grade porous material
  • Method for preparing molybdenum disulfide/carbon composite multi-grade porous material

Examples

Experimental program
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Effect test

Embodiment 1

[0027] 0.5 g of sodium molybdate, 1.0 g of thioacetamide and 2 g of agarose were added to the flask, and 20 ml of water was added to dissolve. The flask is immersed in a water bath, and the temperature of the water bath is set to 90 degrees Celsius. After reacting for 3 days, all devices were closed, and the liquid in the flask was poured into a beaker while it was hot to cool. The samples in the beaker were transferred to the refrigerator to freeze, and then transferred to a freeze dryer at minus 40 degrees Celsius for 24 hours to dry. The above samples were calcined in a tube furnace, the experimental conditions were 500 degrees Celsius for 6 hours, and the heating rate was 2 degrees Celsius per minute. The samples prepared as figure 1 As shown in A, the transmission electron micrograph is shown as figure 2 shown. Under the scanning electron microscope, the hierarchical porous structure can be clearly observed without phase separation; while under the transmission elect...

Embodiment 2

[0029] 0.5 g of sodium molybdate, 1.0 g of thioacetamide and 2 g of agarose were added to the flask, and 20 ml of water was added to dissolve. The flask is immersed in a water bath, and the temperature of the water bath is set to 90 degrees Celsius. After reacting for 2 days, all devices were closed, and the liquid in the flask was poured into a beaker while it was hot to cool. The samples in the beaker were transferred to the refrigerator to freeze, and then transferred to a freeze dryer at minus 40 degrees Celsius for 24 hours to dry. The above samples were calcined in a tube furnace, the experimental conditions were 500 degrees Celsius for 6 hours, and the heating rate was 2 degrees Celsius per minute. The samples prepared as figure 1 Shown in B.

Embodiment 3

[0031] 0.5 g of sodium molybdate, 1.0 g of thioacetamide and 2 g of agarose were added to the flask, and 20 ml of water was added to dissolve. The flask is immersed in a water bath, and the temperature of the water bath is set to 90 degrees Celsius. After reacting for 1 day, all devices were closed, and the liquid in the flask was poured into a beaker while it was hot to cool. The samples in the beaker were transferred to the refrigerator to freeze, and then transferred to a freeze dryer at minus 40 degrees Celsius for 24 hours to dry. The above samples were calcined in a tube furnace, the experimental conditions were 500 degrees Celsius for 6 hours, and the heating rate was 2 degrees Celsius per minute. The samples prepared as figure 1 C shown.

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Abstract

The invention relates to a method for preparing a molybdenum disulfide / carbon composite multi-grade porous material. The method comprises the following steps: adding water into sodium molybdate, thioacetamide and agarose and dissolving; then heating in a water bath; after reacting, pouring out a solution when the solution is hot, and cooling; transferring a cooled sample into a refrigerator for refrigerating; then transferring the sample into a freeze dryer for drying; finally, putting the sample into a tubular furnace and calcining to prepare the molybdenum disulfide / carbon composite multi-grade porous material. The molybdenum disulfide / carbon composite multi-grade porous material prepared by the method provided by the invention has good electrical conductivity; when being used as an electrode material for a super-capacitor, the molybdenum disulfide / carbon composite multi-grade porous material has the advantages of high specific capacity, good circulating performance, stable structure and the like; when being used in a lithium ion battery, the molybdenum disulfide / carbon composite multi-grade porous material has the advantages of good rate performance, high circulating stability and the like; the disadvantages of two energy storage devices can be made up very well, and the molybdenum disulfide / carbon composite multi-grade porous material can be used as a good energy storage material and widely applied to the super-capacitor and the lithium ion battery.

Description

technical field [0001] The invention relates to a method for preparing an energy storage device material, in particular to a method for preparing a molybdenum disulfide / carbon composite hierarchical porous material. Background technique [0002] A chemical power source is a device that can realize mutual conversion between electrical energy and chemical energy, and is an important medium that can make more rational use of energy. Chemical power sources represented by lithium-ion batteries and supercapacitors have extremely wide applications. Lithium-ion batteries have excellent properties such as high working voltage, high energy density, low self-discharge rate, long cycle life and no memory effect, but also have defects such as low power density and poor cycle stability; supercapacitors have fast charging speed and long cycle life. Long, high energy conversion efficiency, high safety factor and many other excellent performances, but it is still difficult to solve the prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/583H01M4/62H01M10/0525H01G11/30H01G11/32H01G11/86
CPCH01G11/30H01G11/32H01G11/86H01M4/362H01M4/5815H01M4/583H01M4/625H01M10/0525Y02E60/10Y02E60/13
Inventor 杨金虎张棪贺婷刘光磊祖连海
Owner TONGJI UNIV
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