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Photo-thermal enhanced supercapacitor electrode material and preparation method thereof

A supercapacitor and electrode material technology, which is applied in hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, copper sulfide, etc., can solve the problems of poor flexibility and stability of electrodes, capacity decay of supercapacitors, and easy falling off of active materials. Accelerate the kinetic process, improve the electrochemical performance, and increase the specific capacity

Active Publication Date: 2021-08-24
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Through the above analysis, the existing problems and defects of the existing technology are: the existing supercapacitor tends to decay in capacity at lower temperatures, and even fails in cold weather
[0006] Moreover, in the prior art, in the preparation of electrodes, the problem that the active material is easy to fall off caused by the electrode coating process cannot be avoided, which makes the electrodes have poor flexibility and stability.

Method used

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  • Photo-thermal enhanced supercapacitor electrode material and preparation method thereof
  • Photo-thermal enhanced supercapacitor electrode material and preparation method thereof
  • Photo-thermal enhanced supercapacitor electrode material and preparation method thereof

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preparation example Construction

[0034] Such as figure 1 As shown, the preparation method of the photothermally enhanced supercapacitor electrode material provided by the embodiment of the present invention includes the following steps:

[0035] S101, put copper foam into 0.5-1mol / L hydrochloric acid and sonicate for 10 minutes, take it out and wash it several times with deionized water, then put it in acetone and sonicate for 10 minutes;

[0036] S102, ultrasonically ultrasonicate the copper foam treated with acetone for 3 to 4 times with deionized water and alcohol respectively, take it out, and vacuum dry it to complete the pretreatment;

[0037] S103, putting the pretreated foamed copper into the thiourea solution, performing hydrothermal reaction in the reactor, taking it out after cooling, cleaning and drying;

[0038] S104, placing the product obtained in S103 in a ferric chloride solution, soaking it for 20 minutes, taking it out, washing it, and drying it to obtain the photothermally enhanced superc...

Embodiment 2

[0055] The preparation method of the supercapacitor electrode material with photothermal enhancement effect provided by the embodiment of the present invention comprises the following steps:

[0056] Step 1: Cut the foamed copper into 1cm*3cm, put it into 1mol / L hydrochloric acid and sonicate it for 10 minutes, take it out, wash it with deionized water for 3 times, then put it in acetone and sonicate it for 10 minutes; Sonicate 3 times with deionized water and alcohol respectively, take it out and dry it in a vacuum oven at 50°C to complete the pretreatment;

[0057] Step 2: Weigh 90 mg of thiourea and add it to a mixed solution of 15 mL of absolute ethanol and 5 mL of deionized water, stir evenly to obtain a thiourea solution; put the pretreated foamed copper into the thiourea solution, and transfer it to polytetrafluoroethylene In the vinyl fluoride stainless steel reaction kettle, hydrothermal reaction was carried out at 150°C for 6 hours. After the reaction, the reaction l...

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Abstract

The invention belongs to the technical field of supercapacitor electrode material preparation, and discloses a photo-thermal enhanced supercapacitor electrode material and a preparation method thereof. The method comprises: putting foamy copper into hydrochloric acid for ultrasonic treatment, taken out, cleaned with deionized water for multiple times, and then putting into acetone for ultrasonic treatment; the foamy copper subjected to acetone ultrasonic treatment being subjected to ultrasonic treatment with deionized water and ethyl alcohol respectively, taking the foamy copper out and then performing vacuum drying, and completing pretreatment; putting the pretreated foamy copper into a thiourea solution, carrying out hydrothermal reaction in a reaction kettle, cooling, taking out, cleaning and drying; and soaking the obtained product in a ferric chloride solution, taking out, cleaning, and drying to obtain the photo-thermal enhanced supercapacitor electrode material. The photo-thermal enhanced supercapacitor electrode material provided by the invention has a three-dimensional multi-stage nanosheet structure and a relatively large specific surface area, so that more chemical reaction active sites can be exposed, the effect of improving the specific capacity is achieved, and good flexibility and stability are achieved.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor electrode material preparation, and in particular relates to a photothermally enhanced supercapacitor electrode material and a preparation method thereof. Background technique [0002] At present, with the rapid development of science and technology, people's demand for environmentally friendly, efficient and sustainable energy storage devices is becoming more and more urgent. Supercapacitor is a new type of energy storage device between traditional dielectric capacitors and secondary batteries. extensive attention. [0003] At present, research on supercapacitors mainly focuses on electrode materials, and carbon-based materials, metal oxides, metal sulfides, and conductive polymers have always been research hotspots in this field. Compared with secondary batteries, supercapacitors have higher power density and the device itself has higher safety, and it has been widely used in transporta...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/26H01G11/30C01G3/12
CPCH01G11/86H01G11/26H01G11/30C01G3/12C01P2002/72C01P2004/03C01P2006/40C01P2004/20Y02E60/13
Inventor 朱挺何智良潘俊吴波
Owner CENT SOUTH UNIV
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