Gel electrolyte and preparation method thereof, and sunlight-driven self-charging supercapacitor and self-charging method thereof

A gel electrolyte and supercapacitor technology, which is applied in hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, hybrid capacitor electrolytes, etc., can solve the problem of increasing the complexity of the supercapacitor power supply system, manufacturing difficulty and economic cost, Hinder and restrict supercapacitor power supply system and other issues, to achieve the effects of easy industrial scale, easy access to raw materials, and considerable economic value

Active Publication Date: 2022-04-22
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the supercapacitor power supply system, the configuration of the external charging system undoubtedly increases the complexity, manufacturing difficulty and economic cost of the supercapacitor power supply system, which virtually hinders and restricts the supercapacitor power supply system. Further development and promotion of communication equipment, aerospace devices and military equipment

Method used

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  • Gel electrolyte and preparation method thereof, and sunlight-driven self-charging supercapacitor and self-charging method thereof
  • Gel electrolyte and preparation method thereof, and sunlight-driven self-charging supercapacitor and self-charging method thereof
  • Gel electrolyte and preparation method thereof, and sunlight-driven self-charging supercapacitor and self-charging method thereof

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preparation example Construction

[0053] The present invention provides a preparation method of the gel electrolyte described in the above technical solution, comprising the following steps:

[0054] mixing the metal salt with water to obtain an aqueous solution of the metal salt;

[0055] mixing the metal salt solution with montmorillonite to obtain a mixed dispersion;

[0056] Under the condition of heating, the mixed dispersion liquid and the high molecular polymer are mixed, and then the obtained mixed liquid is cooled to room temperature to obtain the gel electrolyte.

[0057] The present invention has no special requirements on the sources of the metal salt, montmorillonite and high molecular polymer, and commercially available products well known to those skilled in the art can be used. In the present invention, the heating temperature is preferably 60-80°C. In the present invention, the high molecular polymer is preferably slowly added to the mixed dispersion liquid for mixing; the high molecular pol...

Embodiment 1

[0075] (1) Construction of solar-driven self-charging supercapacitor

[0076] Preparation of light-to-heat conversion thin film electrodes: Mix graphene oxide and distilled water at a mass ratio of 1:5 to obtain a graphene oxide suspension; dilute the graphene oxide suspension to maintain a concentration of 5g / L, and dilute the graphite oxide Ultrasonic dispersion of olefin diluent for 5min, and then suction filtration of the diluent, the membranes after suction filtration were cleaned with distilled water and absolute ethanol, and dried at 60°C to obtain a circular graphene oxide membrane material. Obtain two circular graphene oxide thin film materials; Then utilize 50% HI solution to reduce two circular graphene oxide thin film materials, obtain two circular graphene thin film materials, such as image 3 shown. Graphene film materials exhibit high solar light absorption (such as Figure 4 Shown), the diameter of single circular graphene film material is 50mm, and thickness...

Embodiment 2

[0083] (1) Construction of solar-driven self-charging supercapacitor

[0084] Preparation of light-to-heat conversion film electrodes: carbon nanosheets, binder (polyvinylidene fluoride) and diluent (the volume ratio of ethanol and distilled water in the diluent is 1:5) according to the mass ratio of 2:0.5: After mixing at a ratio of 20, ball milling was carried out for 2 hours, and the solution after ball milling was ultrasonically dispersed for 5 minutes. Methods Two carbon nanosheet thin film electrodes with a thickness of 2.5 μm were obtained. Figure 11 is the solar reflection spectrum of the prepared carbon nanosheet thin film electrode material. It can be seen that the carbon nanosheet thin film electrode material exhibits good solar light absorption characteristics, and the solar energy absorption value of the carbon nanosheet thin film electrode is 0.90.

[0085] Preparation of gel electrolyte: Dissolve lithium chloride in water, add montmorillonite to lithium chlori...

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Abstract

The invention provides a gel electrolyte, a preparation method of the gel electrolyte, a sunlight-driven self-charging supercapacitor and a self-charging method of the sunlight-driven self-charging supercapacitor, and relates to the technical field of gel electrolytes. The gel electrolyte provided by the invention has relatively high cation migration characteristic, low thermal conductivity and low specific heat capacity. The invention further provides a sunlight-driven self-charging supercapacitor which comprises a first photo-thermal conversion film electrode, a second photo-thermal conversion film electrode and the gel electrolyte loaded between the first photo-thermal conversion film electrode and the second photo-thermal conversion film electrode, wherein the first photo-thermal conversion film electrode and the second photo-thermal conversion film electrode are oppositely arranged in parallel; the exposed part of the gel electrolyte is packaged with a packaging material; the first photo-thermal conversion film electrode and the second photo-thermal conversion film electrode are respectively bonded with a metal lead and are used for being externally connected with a load. The super capacitor provided by the invention can complete self-charging only by means of sunlight without the help of an external auxiliary charging system, so that direct and efficient conversion from solar thermal energy to electric energy and storage and utilization are realized.

Description

technical field [0001] The invention relates to the technical field of supercapacitors, in particular to a gel electrolyte and a preparation method thereof, a solar-driven self-charging supercapacitor and a self-charging method thereof. Background technique [0002] Under the development background of "carbon peaking and carbon neutrality", vigorously promoting the development and utilization of clean energy technologies is an important means to achieve the dual carbon goals. Clean energy technologies include not only low-cost acquisition technologies for green energy such as wind energy and solar energy, but also large-scale energy storage technologies that can realize energy storage across time and space, as well as technologies that convert heat, mechanical vibration, and other energies into electrical energy to improve energy utilization efficiency. Energy conversion and storage technologies, etc. Therefore, energy storage technology plays a pivotal role in the developm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/56H01G11/84H01G11/26H02J7/00
CPCH01G11/56H01G11/84H01G11/26H02J7/00
Inventor 马鹏军郎俊伟张旭杨宝汪妍段文慧吴伟鲁种伟
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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