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A kind of supercapacitor carbon/titanium carbide core-shell composite ball electrode material and preparation method thereof

A technology for supercapacitors and electrode materials, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors. It can solve the problems of further improvement in performance, achieve effective active reaction area, improve high-rate performance, and shorten diffusion distance. Effect

Active Publication Date: 2018-03-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prepared carbon-carbon composite electrode material shows good power characteristics and high energy density, and the specific capacity can reach 220F / g, and its performance needs to be further improved

Method used

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  • A kind of supercapacitor carbon/titanium carbide core-shell composite ball electrode material and preparation method thereof
  • A kind of supercapacitor carbon/titanium carbide core-shell composite ball electrode material and preparation method thereof
  • A kind of supercapacitor carbon/titanium carbide core-shell composite ball electrode material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Weigh 18g of glucose and dissolve it in 1000ml of deionized water, stir until completely dissolved to form a 0.1mol / L glucose aqueous solution. Then take 80ml of glucose aqueous solution and put it into a polytetrafluoroethylene high-pressure hydrothermal tank, and put it into a foamed nickel substrate, seal the autoclave, and conduct a hydrothermal reaction at 180° C. for 2 hours. After the reaction, it was cooled to room temperature of 25°C, washed and dried with deionized water, calcined in argon at 500°C for 1 hour, and naturally cooled to room temperature of 25°C to prepare foamed nickel-supported carbon nanospheres. Scanning electron microscope (SEM) and transmission electron microscope (TEM) analysis are carried out to the obtained carbon nanosphere, such as figure 1 with 2 As shown, it can be seen that the average diameter of carbon nanospheres is 100 nm, and they are cross-linked with each other to form a porous structure.

[0026] The above-mentioned carbon ...

Embodiment 2

[0028] Weigh 90g of glucose and dissolve it in 1000ml of deionized water, stir until completely dissolved to prepare 0.5mol / L glucose aqueous solution. Then take 80ml of glucose aqueous solution and put it into a polytetrafluoroethylene high-pressure hydrothermal tank, and put it into a foamed nickel base, seal the autoclave, and conduct a hydrothermal reaction at 225° C. for 4 hours. After the reaction, it was cooled to room temperature of 25°C, washed and dried with deionized water, calcined in argon at 650°C for 2 hours, and naturally cooled to room temperature of 25°C to prepare foamed nickel-supported carbon nanospheres.

[0029] The above-mentioned carbon nanospheres supported by nickel foam were placed in an atomic layer deposition apparatus, using titanium tetrachloride and deionized water as reaction sources, and reacted for 120 deposition cycles under the condition of 150°C. After washing and drying with deionized water, calcining at 1050°C in argon for 2.5 hours, an...

Embodiment 3

[0031] Weigh 180g of glucose and dissolve it in 1000ml of deionized water, stir until completely dissolved to prepare 1mol / L glucose aqueous solution. Then take 80ml of glucose aqueous solution and put it into a polytetrafluoroethylene high-pressure hydrothermal tank, and put it into a foamed nickel base, seal the autoclave, and conduct a hydrothermal reaction at 250° C. for 6 hours. After the reaction, it was cooled to room temperature of 25°C, washed and dried with deionized water, calcined in argon at 800°C for 3 hours, and naturally cooled to room temperature of 25°C to obtain foamed nickel-supported carbon nanospheres.

[0032] The above-mentioned carbon nanospheres supported by nickel foam were placed in an atomic layer deposition apparatus, using titanium tetrachloride and deionized water as reaction sources, and reacted for 160 deposition cycles under the condition of 200°C. After washing and drying with deionized water, it was calcined at 1300°C in argon for 5 hours, ...

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Abstract

The invention discloses a carbon / titanium carbide core-shell composite spherical electrode material for a supercapacitor and a preparation method thereof. Glucose is hydrothermally carbonized, followed by the first step of heat treatment to generate cross-linked carbon nanospheres loaded with nickel foam, and then passed through atomic Layer deposition method, with titanium tetrachloride and deionized water as the reaction source, react to obtain the TiO2 coating layer; then the second step of heat treatment will be carried out, and the carbon nanospheres and the TiO2 coating layer will undergo carbon thermal reaction to form supercapacitor carbon spheres and Titanium carbide core-shell composite sphere electrode material, including a substrate, carbon nanospheres arranged on the substrate, and a titanium carbide nanolayer coated on the surface of the carbon nanosphere. 50nm. The electrode material of the invention has high specific capacitance, high cycle life, high energy and high power density and high cycle life, and has broad application prospects in the fields of mobile communications, electric vehicles, aerospace and the like.

Description

technical field [0001] The invention relates to the field of carbon / titanium carbide composite electrode materials, in particular to a supercapacitor carbon / titanium carbide core-shell composite ball electrode material and a preparation method thereof. Background technique [0002] With the rapid development of social economy and the shortage of resources and energy, vigorously developing renewable clean energy and its energy storage devices has become a major strategic choice for the sustainable development of human society. In recent years, a series of achievements in supercapacitors have complied with people's demand for new energy storage devices. Supercapacitors have the characteristics of short charging time, good temperature characteristics, high specific power, good cycle life, green environmental protection and energy saving, and have played an important role in the fields of mobile communications, aerospace and electric vehicles. Compared with lithium-ion batterie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/36H01G11/42H01G11/86
CPCY02E60/13
Inventor 夏新辉詹继烨涂江平王秀丽
Owner ZHEJIANG UNIV
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