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Supercapacitor carbon/titanium carbide core casing 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, etc. 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: 2016-10-12
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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  • Supercapacitor carbon/titanium carbide core casing composite ball electrode material and preparation method thereof
  • Supercapacitor carbon/titanium carbide core casing composite ball electrode material and preparation method thereof
  • Supercapacitor carbon/titanium carbide core casing 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 and 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 n...

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 supercapacitor carbon / titanium carbide core casing composite ball electrode material and a preparation method thereof. After glucose water heat carbonation, the first step of heat treatment is carried out to produce a crosslinked carbon nanosphere loaded with nickel foam. An atomic layer deposition method is used and titanium tetrachloride and deionized water are used as a reaction source to acquire a TiO2 coating layer. A second step of heat treatment is carried out. The carbon nanosphere and the TiO2 coating layer form a supercapacitor carbon sphere and the titanium carbide composite sphere electrode material through carbon thermal reaction. The electrode material comprises a substrate, the carbon nanosphere arranged on the substrate and a titanium carbide nano-layer coating the carbon nanosphere. The diameter of the carbon nanosphere is from 100 to 500nm. The thickness of the nano titanium carbide layer is from 10 to 50nm. The electrode material provided by the invention has the advantages of high specific capacitance, high cycle service life, high energy and high power density, and has a wide application prospect in mobile communication, electric vehicles, aerospace and other fields.

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