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Supercapacitor electrode material, preparation method thereof and supercapacitor

A technology of supercapacitors and electrode materials, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, etc., can solve the problems that the electrochemical performance of electrode materials needs to be further improved, cannot be mass-produced, and has few active sites. Improve electrochemical performance, enrich active sites, and improve the effect of active sites

Active Publication Date: 2021-03-26
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the electrode materials of the existing pseudocapacitors generally use the method of magnetron sputtering to synthesize transition metal oxides. The electrochemical performance of electrode materials still needs to be further improved

Method used

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  • Supercapacitor electrode material, preparation method thereof and supercapacitor
  • Supercapacitor electrode material, preparation method thereof and supercapacitor
  • Supercapacitor electrode material, preparation method thereof and supercapacitor

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A kind of supercapacitor electrode material, its preparation method comprises the following steps:

[0043] S1. Sonicate the flexible carbon fiber cloth in ethanol at room temperature for 30min, then soak it in concentrated nitric acid with a mass fraction of about 68% for 1h, then sonicate and rinse in ultrapure water for 30min, and finally wash it with ultrapure water, and then Dry at 60°C;

[0044] S2, using zinc nitrate and ammonium nitrate to prepare an electroplating solution, so that the electroplating solution contains 0.01M zinc ions and 0.04M ammonium ions; then the flexible carbon fiber cloth treated in step S1 is used as a cathode, and connected to the circuit together with the anode carbon rod, Then insert the electrode into the electroplating solution, control the temperature of the electroplating solution to 70°C, and set the current density at 0.8mA / cm 2 Electrodeposition was carried out for 90 minutes; after the electrodeposition was completed, the dep...

Embodiment 2

[0049] A kind of supercapacitor electrode material, its preparation method comprises the following steps:

[0050] S1. Sonicate the flexible carbon fiber cloth in ethanol at room temperature for 30min, then soak it in concentrated nitric acid with a mass fraction of about 68% for 1h, then sonicate and rinse in ultrapure water for 30min, and finally wash it with ultrapure water, and then Dry at 60°C;

[0051] S2, using zinc nitrate and ammonium nitrate to prepare an electroplating solution, so that the electroplating solution contains 0.01M zinc ions and 0.04M ammonium ions; then the flexible carbon fiber cloth treated in step S1 is used as a cathode, and connected to the circuit together with the anode carbon rod, Then insert the electrode into the electroplating solution, control the temperature of the electroplating solution to 70°C, and set the current density at 0.8mA / cm 2 Electrodeposition was carried out for 90 minutes; after the electrodeposition was completed, the dep...

Embodiment 3

[0056] A kind of supercapacitor electrode material, its preparation method comprises the following steps:

[0057] S1. Sonicate the flexible carbon fiber cloth in ethanol at room temperature for 30min, then soak it in concentrated nitric acid with a mass fraction of about 68% for 1h, then sonicate and rinse in ultrapure water for 30min, and finally wash it with ultrapure water, and then Dry at 60°C;

[0058] S2, using zinc nitrate and ammonium nitrate to prepare an electroplating solution, so that the electroplating solution contains 0.01M zinc ions and 0.04M ammonium ions; then the flexible carbon fiber cloth treated in step S1 is used as a cathode, and connected to the circuit together with the anode carbon rod, Then insert the electrode into the electroplating solution, control the temperature of the electroplating solution to 70°C, and set the current density at 0.8mA / cm 2 Electrodeposition was carried out for 90 minutes; after the electrodeposition was completed, the dep...

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Abstract

The invention discloses a supercapacitor electrode material, a preparation method thereof and a supercapacitor, and the preparation method of the supercapacitor electrode material comprises the steps:preparing a zinc oxide nanorod array on a conductive substrate, and then soaking the zinc oxide nanorod array in a first alkaline solution for dissolution and etching, thereby obtaining a zinc oxidenanotube array; cleaning to remove the first alkaline solution on the zinc oxide nanotube array; immersing the treated zinc oxide nanotube array into a transition metal salt solution to enable the zinc oxide nanotube array to adsorb transition metal ions; and transferring the zinc oxide nanotube array into a second alkaline solution, and reacting the transition metal ions adsorbed on the zinc oxide nanotube array with the second alkaline solution to synthesize a transition metal hydroxide, so that the zinc oxide nanotube array is loaded with the transition metal hydroxide. The preparation method is simple to operate, safe, reliable, low in production cost and suitable for large-scale production; the prepared supercapacitor electrode material is large in specific surface area, rich in active sites and excellent in electrochemical performance.

Description

technical field [0001] The invention relates to the technical field of supercapacitors, in particular to a supercapacitor electrode material, a preparation method thereof and a supercapacitor. Background technique [0002] Supercapacitors, also known as ultra-large-capacity capacitors or electrochemical capacitors, are a new type of energy storage device between traditional capacitors and batteries. Supercapacitor has the characteristics of instant release of large current, fast charge and discharge, long cycle life, no memory effect, etc., and its specific capacitance is higher than that of traditional capacitors, and its power density is higher than that of batteries. It is a new energy storage component. , electronics, electric vehicles, aerospace and defense technology and other aspects have extremely important and broad application prospects. [0003] At present, the electrode materials of supercapacitors mainly include activated carbon materials, conductive polymers a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/46H01G11/30H01G11/24H01G11/86
CPCH01G11/46H01G11/30H01G11/24H01G11/86Y02E60/13
Inventor 李高仁赵佳伟古林非谢灵杰李成飞吴金齐
Owner SUN YAT SEN UNIV
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