A photothermally enhanced supercapacitor electrode material and preparation method thereof

A technology for supercapacitors and electrode materials, which is applied in the fields of hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, copper sulfide, etc. It can solve the problems of poor electrode flexibility and stability, supercapacitor capacity decay, and easy shedding of active materials. Achieve the effect of accelerating kinetic process, improving electrochemical performance and increasing specific capacity

Active Publication Date: 2022-06-21
CENT SOUTH UNIV
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  • Abstract
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  • Claims
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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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  • A photothermally enhanced supercapacitor electrode material and preparation method thereof
  • A photothermally enhanced supercapacitor electrode material and preparation method thereof
  • A photothermally enhanced supercapacitor electrode material and preparation method thereof

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preparation example Construction

[0034] like 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 the foamed copper into 0.5-1 mol / L hydrochloric acid for 10 minutes, wash it with deionized water for several times after taking it out, and then put it in acetone for 10 minutes of ultrasound;

[0036] S102, the copper foam that has been ultrasonically treated with acetone is ultrasonicated 3 to 4 times with deionized water and alcohol respectively, taken out and dried in vacuum to complete the pretreatment;

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

[0038] S104, the product obtained in S103 is placed in a ferric chloride solution, soaked for 20 minutes, taken out, cleaned, and dried to obtain the photothermally enhanced supe...

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 foam copper into 1cm*3cm, put it into 1mol / L hydrochloric acid for 10min, wash it with deionized water for 3 times after taking it out, and then put it in acetone for sonication for 10min; Deionized water and alcohol were used for ultrasonic 3 times respectively. After taking them out, they were dried in a vacuum drying 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 foam copper into the thiourea solution, and transfer it to polytetrafluoroethylene. In the vinyl fluoride stainless steel reactor, hydrothermally reacted at 150 °C for 6 hours. After the reaction was completed, the re...

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Abstract

The invention belongs to the technical field of supercapacitor electrode material preparation, and discloses a photothermally enhanced supercapacitor electrode material and a preparation method. The copper foam is put into hydrochloric acid for ultrasonic treatment, and after taking it out, it is cleaned several times with deionized water, and then placed in acetone. Ultrasonic treatment in medium; ultrasonically treat the copper foam treated with acetone ultrasonic treatment with deionized water and alcohol respectively, take it out and dry it in vacuum to complete the pretreatment; put the pretreated copper foam into thiourea solution, carry out hydrothermal reaction, take out after cooling, wash and dry; soak the obtained product in ferric chloride solution, take it out, wash and dry, and then obtain the photothermally enhanced supercapacitor electrode material. The photothermally enhanced supercapacitor electrode material provided by the present invention has a three-dimensional multi-level nanosheet structure and has a large specific surface area, thereby exposing more chemical reaction active sites, achieving the effect of increasing the specific capacity, and has good flexibility and stability.

Description

technical field [0001] The invention belongs to the technical field of preparation of supercapacitor electrode materials, in particular 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, the demand for environmentally friendly, efficient and sustainable energy storage devices is becoming more and more urgent. Supercapacitors are a new type of energy storage device between traditional dielectric capacitors and secondary batteries. Because of their advantages of fast charging and discharging speed, high power density, good cycle stability and low maintenance cost, they are widely accepted. extensive attention. [0003] At present, the research on supercapacitors mainly focuses on electrode materials, and carbon-based materials, metal oxides, metal sulfides and conductive polymers have been the research hotspots in this field. Compared ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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