Electrode material ink, preparation method and method for preparing micro supercapacitor by using electrode material ink

A technology for supercapacitors and electrode materials, which is applied in electrode material ink, preparation of micro-supercapacitors, and preparation fields, can solve the problems of non-electrode material components and uneven dispersion of electrode material ink, so as to increase the effective specific surface area and improve the electrochemical performance. performance, the effect of increasing viscosity

Inactive Publication Date: 2020-03-20
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing electrode material inks that are unevenly dispersed and the prepared micro-superc

Method used

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  • Electrode material ink, preparation method and method for preparing micro supercapacitor by using electrode material ink
  • Electrode material ink, preparation method and method for preparing micro supercapacitor by using electrode material ink
  • Electrode material ink, preparation method and method for preparing micro supercapacitor by using electrode material ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Add 10 g of hydroxyethyl cellulose to 500 mL of ethanol for dissolution, stir and dissolve at room temperature to obtain an ethanol solution, weigh 10 g of reduced graphene oxide and add it to the ethanol solution, and stir at a rotation speed of 500 rpm at room temperature to obtain a primary dispersion. Use an ultrasonic disperser to disperse the primary distribution liquid once. The ultrasonic power is 150W, and the ultrasonic time is 60 minutes. Add 100mL of linalool and perform a second ultrasonic wave. Ultrasonic is performed for 100 minutes at the same ultrasonic power;

[0054] Use a rotary evaporator to remove ethanol from the dispersion to obtain electrode material ink;

[0055] Different films can be obtained by scraping the prepared ink onto different substrates, drying and annealing the scraped film to obtain a graphene-only film;

[0056] The Chinese ink that embodiment 1 prepares is as figure 1 shows that large-scale preparation can be carried out by thi...

Embodiment 2

[0061] Add 150 mg of hydroxymethyl cellulose to 30 mL of methanol for dissolution, stir and dissolve at room temperature to obtain a methanol solution, weigh 7.5 mg of nitrogen atom-doped reduced graphene oxide, add it to the above solution, and stir at room temperature at a speed of 500 rpm The primary dispersion was obtained, and the primary dispersion was ultrasonicated once with an ultrasonic disperser, the ultrasonic power was 150 W, and the ultrasonic time was 20 minutes, 0.1 mL of terpineol was added, and then a second ultrasonic was performed, and the same ultrasonic power was ultrasonicated for 40 minutes.

[0062] Methanol was removed from the dispersion using a rotary evaporator to obtain electrode material ink.

[0063] The electrode material ink is printed on a polyimide substrate by inkjet printing technology to form a micro-supercapacitor, and the printed micro-supercapacitor is dried in a vacuum environment and annealed so that the electrode material only contai...

Embodiment 3

[0067] Add 135 mg of hydroxyethyl cellulose to 30 mL of ethanol for dissolution, stir and dissolve at room temperature to obtain an ethanol solution, weigh 270 mg of reduced graphene oxide and add it to the ethanol solution, and stir at room temperature at a speed of 500 rpm to obtain a primary dispersion. The primary dispersion was ultrasonicated once with an ultrasonic disperser, the ultrasonic power was 150W, and the ultrasonic time was 10 minutes. After adding 5mL of terpineol, ultrasonication was performed a second time, and ultrasonication was performed for 20 minutes at the same ultrasonic power to obtain dispersed solution 1.

[0068] Add 15 mg of hydroxyethyl cellulose to 30 mL of ethanol for dissolution, dissolve and stir at room temperature to obtain an ethanol solution, weigh 15 mg of carbon nanotubes and add them to the ethanol solution, and stir at 500 rpm at room temperature to obtain a primary dispersion. The dispersion liquid was ultrasonicated once with an ult...

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Abstract

The invention discloses electrode material ink, a preparation method and a method for preparing a miniature supercapacitor by using the same, and belongs to the technical field of miniature supercapacitors. The preparation method of the electrode material ink comprises the following steps: 1) adding a dispersing agent and an electrode material into an alcohol solution, and carrying out ultrasonictreatment to prepare a primary ultrasonic dispersion solution; 2) adding a target solvent into the primary ultrasonic dispersion liquid of the electrode material, and performing secondary ultrasonic treatment to obtain secondary ultrasonic dispersion liquid; and 3) removing the alcohol liquid in the secondary ultrasonic dispersion liquid to obtain the electrode material ink. By utilizing the preparation method disclosed by the invention, ink with different viscosities and different fluidity can be prepared by adjusting the amounts of the electrode material and the solvent, capacitors with different shapes and different sizes can be printed, and the preparation method does not contain toxic solvents and is suitable for large-scale production. The electrode material ink provided by the invention is uniform in dispersion of the electrode material, has good film-forming property, and can be printed on different substrates.

Description

technical field [0001] The invention relates to the technical field of micro-supercapacitors, especially an electrode material ink, a preparation method, and a method for preparing micro-supercapacitors using the same. Background technique [0002] With the increasing demand for miniaturized portable electronic products, micro energy storage devices are undergoing rapid development. Due to their many advantages, such as high power density and long cycle life, micro supercapacitors play an important role in the energy storage of small electronic products. irreplaceable role. Micro supercapacitors can be divided into pseudocapacitors and electric double layer capacitors according to their different energy storage mechanisms. The electrode materials of pseudocapacitors mainly include transition metal oxides, hydroxides, sulfides, conductive polymers, etc.; Electrode materials mainly include carbon-based materials, including graphene, carbon nanotubes, carbon nanofibers, and ac...

Claims

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Application Information

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IPC IPC(8): H01G11/38H01G11/36H01G11/40H01G11/84H01G11/86
CPCH01G11/36H01G11/38H01G11/40H01G11/84H01G11/86Y02E60/13
Inventor 李磊张岩王亚玲王国隆史晓薇乔祎德
Owner XI AN JIAOTONG UNIV
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