A kind of supercapacitor and preparation method thereof

A supercapacitor and electrolytic solution technology, applied in the field of capacitors, can solve problems such as failure to meet customer needs, supercapacitor mass specific capacity and energy density limitations, and achieve rapid charge and discharge capabilities, high energy density, and thin electrode thickness.

Active Publication Date: 2019-10-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The mass specific capacity and energy density of existing supercapacitors have certain limitations, which cannot meet the needs of customers

Method used

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  • A kind of supercapacitor and preparation method thereof
  • A kind of supercapacitor and preparation method thereof
  • A kind of supercapacitor and preparation method thereof

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0027] figure 1 Process flow chart of the preparation method of the supercapacitor provided by the present invention. see figure 1 , the preparation method of supercapacitor, comprises the steps:

[0028] (1), using the anodic oxidation method to prepare a titanium dioxide nanotube array on a titanium sheet, the obtained titanium dioxide nanotube array is used as the negative electrode of the supercapacitor, and the titanium dioxide nanotube array is obtained, which can form a capacitor connected in parallel with a large number of independent tubular supercapacitors, so that The subsequent supercapacitors have the advantages of high-quality specific capacity and high energy density.

[0029] The electrolyte is prepared by dissolving ammonium fluoride in a mixed solution of ethylene glycol and deionized water. Wherein, in the electrolyte solution, the volume of ethylene glycol accounts for 10%-30% of the volume of the electrolyte solution.

[0030] First, the titanium sheet...

Embodiment 1

[0047] A method for preparing a supercapacitor, comprising the following steps: (1) preparing a titanium dioxide nanotube array on a titanium sheet by using an anodic oxidation method. (2) Depositing a solid electrolyte on the surface of the titanium dioxide nanotube array. (3) Deposit transition metal oxides on the side of the solid electrolyte away from the titanium dioxide nanotube array.

Embodiment 2

[0049] A method for preparing a supercapacitor, comprising the steps of: (1), dissolving ammonium fluoride in a mixed solution of ethylene glycol and deionized water to make an electrolyte, using a titanium sheet as a positive electrode and platinum as a negative electrode in the electrolyte anodized for 3 hours in the medium, and then annealed at a temperature of 500° C. for 3 hours to obtain titanium dioxide nanotube arrays.

[0050] (2), sodium sulfate is dissolved in deionized water to form an electrolytic solution, sodium sulfide is dissolved in the electrolytic solution to form the first deposition solution, lithium sulfate is dissolved in the electrolytic solution to form the second deposition solution, zinc sulfate is dissolved in The third deposition solution is formed in the electrolytic solution, the titanium dioxide nanotube array is used as the working electrode, the platinum sheet is used as the counter electrode, and the Ag / AgCl is used as the reference electrode...

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Abstract

The invention provides a supercapacitor and a preparation method thereof, belonging to the technical field of capacitors. The preparation method of the supercapacitor comprises the following steps: using an anodic oxidation method to prepare a titanium dioxide nanotube array on a titanium sheet. A solid electrolyte is deposited on the surface of titania nanotube arrays. A transition metal oxide is deposited on the side of the solid electrolyte away from the titania nanotube array. The above-mentioned preparation method is simple, and the obtained supercapacitor has the advantages of high-quality specific capacity and high energy density, and can work in an extremely wide temperature range at the same time.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to a super capacitor and a preparation method thereof. Background technique [0002] In order to solve a series of crises such as the depletion of traditional energy sources and environmental degradation in the 21st century, researchers have been committed to the research and application of new, efficient, clean, and renewable energy materials and devices. Among various forms of energy, electric energy is the easiest to transmit and utilize. In order to effectively utilize electrical energy, it has always been an important research topic to convert and store electrical energy through clean and renewable pathways. [0003] Supercapacitor (Supercapacitor), also known as Electrochemical Capacitor (Electrochemical Capacitor), Electric Double-Layer Capacitor (Electrical Double-Layer Capacitor), Gold Capacitor, Farad Capacitor, is a new type of energy storage device between traditiona...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H01G11/84H01G11/86H01G11/56H01G11/24H01G11/26H01G11/46C23C14/35C23C14/08C25D11/26B82Y30/00B82Y40/00
Inventor徐建华郭亚楠何鑫毛喜玲周榆久杨文耀
OwnerUNIV OF ELECTRONICS SCI & TECH OF CHINA