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FeCo2O4//AC water system asymmetric photo-assisted super capacitor and preparation method thereof

A supercapacitor, asymmetric technology, applied in the direction of hybrid/electric double layer capacitor manufacturing, hybrid capacitor electrodes, etc., can solve the problems of low energy density, unable to play the role of energy storage, etc., achieve multiple active sites, promote Faraday reaction, Effect that contributes to carrier transport

Active Publication Date: 2021-11-23
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lower energy density makes it unable to play a greater role in energy storage

Method used

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  • FeCo2O4//AC water system asymmetric photo-assisted super capacitor and preparation method thereof
  • FeCo2O4//AC water system asymmetric photo-assisted super capacitor and preparation method thereof
  • FeCo2O4//AC water system asymmetric photo-assisted super capacitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 FeCo 2 o 4 / / AC water system asymmetric light-assisted supercapacitor

[0029] (1) The preparation method is as follows

[0030] 1. Preparation of cathode materials

[0031] FeSO 4 ·7H 2 O(0.27g, 1mmol), Co(NO 3 ) 2 ·6H 2 O (0.58g, 2mmol), CO (NH 2 ) 2 (0.3, 5mmol) and NH 4 F (0.074g, 2mmol) was dissolved in 40mL of distilled water and stirred until fully dissolved to obtain a mixed solution.

[0032] Transfer the mixed solution to an autoclave and put in a 1 x 1.5 cm 2 The size of the nickel foam was used as the substrate, and the hydrothermal reaction was carried out at 120 °C for 6 hours to grow FeCo in situ on the foamed nickel 2 o 4 After the reaction is completed, cool to room temperature, rinse with deionized water and absolute ethanol for 3-5 times, and dry at 60°C for 6 hours, and the obtained material is used as the positive electrode material.

[0033] Gained positive electrode material, its corresponding XRD pattern is as follows fig...

Embodiment 2

[0038] Example 2 FeCo 2 o 4 / / Application of AC water system asymmetric light-assisted supercapacitor in energy storage

[0039] (1) Method

[0040] Adopt the FeCo prepared by embodiment 1 2 o 4 / / AC water system asymmetric light-assisted supercapacitor, with 500W xenon lamp equipped with AM1.5 simulated sunlight filter as light source.

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Abstract

The invention relates to a FeCo2O4 / / AC water system asymmetric photo-assisted super capacitor and a preparation method thereof, and belongs to the technical field of energy materials. The capacitor is characterized in that foamed nickel is used as a substrate, FeCo2O4 grows in situ on the foamed nickel, and the obtained material is used as a positive electrode material; foamed nickel is used as the substrate, activated carbon AC is coated on the foamed nickel, and the obtained material is used as a negative electrode material; and a 1M KOH solution is used as an electrolyte, and the FeCo2O4 / / AC water system asymmetric photo-assisted super capacitor is assembled under illumination. A voltage window of the prepared water system asymmetric photo-assisted super capacitor is 1.5 V, and the specific capacitance value after illumination is improved by 26.6%. When two devices are connected in series, four red LED lamps can be lightened.

Description

technical field [0001] The invention belongs to the technical field of energy materials, in particular to a FeCo 2 o 4 / / AC water-based asymmetric light-assisted supercapacitor and its preparation method. Background technique [0002] With the continuous consumption of energy and the deterioration of the environment, carbon neutrality has become a common concern of all countries in the world. Research on the development, utilization and storage of renewable energy is imminent. Supercapacitors have irreplaceable characteristics such as high power density, fast charge-discharge capability, long cycle life, and low maintenance cost, and are considered as potential energy storage devices in the fields of consumer electronics, electric vehicles, and smart grids. Compared with traditional capacitors, supercapacitors have higher capacitance and are able to release energy at higher powers. However, the low energy density makes it unable to play a greater role in energy storage. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/46H01G11/84H01G11/86
CPCH01G11/30H01G11/46H01G11/86H01G11/84Y02E60/13
Inventor 吴阳赵云波张宇刘旭李辉
Owner LIAONING UNIVERSITY
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