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A preparation method of a miniature asymmetric supercapacitor, a miniature asymmetric supercapacitor and its application

A supercapacitor, asymmetric technology, used in hybrid capacitor electrodes, hybrid capacitor electrolytes, hybrid/electric double-layer capacitor manufacturing, etc., can solve the problems of volatile, flammable, limited service life, etc., and achieve good flexibility and mechanical properties , the effect of high energy density, high power density

Active Publication Date: 2021-09-03
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the current self-powered energy units are rigidly connected between the energy conversion system and the energy storage system. The system is bulky and complex, and cannot be used in wearable application scenarios. Because energy storage systems are mainly mainstream batteries, such as lithium-ion batteries, sodium-ion batteries) and safety issues (based on organic electrolyte systems, low flash point, volatile, flammable, toxic to the human body, etc.)

Method used

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  • A preparation method of a miniature asymmetric supercapacitor, a miniature asymmetric supercapacitor and its application
  • A preparation method of a miniature asymmetric supercapacitor, a miniature asymmetric supercapacitor and its application
  • A preparation method of a miniature asymmetric supercapacitor, a miniature asymmetric supercapacitor and its application

Examples

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preparation example Construction

[0032] A kind of preparation method of miniature asymmetric supercapacitor, it comprises the following steps:

[0033] (a) cleaning the substrate, and then depositing gold nanoparticles on the surface of the substrate to form a gold substrate; the substrate is one selected from polyimide, polyester and A4 paper.

[0034] (b) The manganese dioxide carbon composite is nanoflower-like MnO 2 , the preparation process is as follows: GO aqueous suspension was added to deionized water, and then KMnO 4 Stir with urea to obtain the first solution, transfer the first solution to an autoclave at 110-130°C for hydrothermal reaction for 10-14h, then wash and dry to obtain nanoflower-like MnO 2 . Mix the manganese dioxide-carbon composite material, conductive carbon black, and binder uniformly to form a positive electrode slurry, and print the positive electrode slurry on the gold substrate by screen printing to form the positive electrode part, and dry it;

[0035] (c) The preparation p...

Embodiment 1

[0041] Embodiment 1 provides a kind of preparation method of miniature asymmetric supercapacitor, it comprises the following steps:

[0042] (a) The base polyimide (PI) film was washed successively with acetone, deionized water, and ethanol respectively and dried, placed in an oxygen plasma device for 2 min, and then gold nanoparticles were deposited on the surface of the PI film by ion plating, form a gold base;

[0043] (b) The manganese dioxide carbon composite is nanoflower-like MnO 2 , and its preparation process is as follows: 2mL GO aqueous suspension (5mg mL -1 ) into 58mL deionized water, then add 316mg KMnO 4 Stir with 1g of urea for 20min to obtain the first solution, transfer the first solution to a polytetrafluoroethylene-lined autoclave at 120°C for hydrothermal reaction for 12h, then wash and dry to obtain nanoflower-like MnO 2 . Mix the manganese dioxide carbon composite material, conductive carbon black, and binder in a mass ratio of 8:1:1 to form the posi...

Embodiment 2

[0048] Embodiment 2 provides a preparation method of a miniature asymmetric supercapacitor, a miniature asymmetric supercapacitor and its application, which is basically the same as that in Example 1, except that in step (c), it is printed on a gold substrate The mass ratio of the manganese dioxide carbon composite material and the vanadium nitride nanowires printed on the gold substrate is 1:1.7.

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Abstract

The invention discloses a preparation method of a miniature asymmetric supercapacitor, a miniature asymmetric supercapacitor and its application. Firstly, a manganese dioxide carbon composite material is used to make a positive electrode slurry and printed on a gold substrate as a positive electrode based on screen printing technology. The negative electrode paste made of vanadium nanowires is printed on the gold substrate as the negative electrode based on screen printing technology, and the PAM gel electrolyte based on magnesium ions is used as the electrolyte. The prepared miniature asymmetric supercapacitor has good flexibility and mechanical properties; due to The pseudocapacitive deintercalation behavior of magnesium ions between vanadium nitride layers forms high energy density and high power density; in terms of application, flexible micro asymmetric supercapacitors and flexible silicon solar cells are integrated to form a fully flexible self- The power supply energy unit has the characteristics of high flexibility and portability.

Description

technical field [0001] The invention belongs to the field of self-powered wearable energy, and in particular relates to a preparation method of a miniature asymmetric supercapacitor, a miniature asymmetric supercapacitor and applications thereof. Background technique [0002] In recent years, with the rapid development of flexible electronic technology, people's demand for wearable energy storage systems with high flexibility, high safety and high efficiency is increasing; at the same time, in order to meet the immediate energy demand, the combination of energy storage system and energy conversion system Mutual integration has gradually become a hot spot. These integrated systems can simultaneously convert energy (such as solar energy, thermal energy, wind energy, etc.) and store energy (electric energy), forming a self-powered energy unit that does not require an external power supply, and plays an important role in more and more occasions. [0003] However, most of the cu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/84H01G11/86H01G11/30H01G11/46H01G11/56C01G45/02C01B21/06B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B21/0617C01G45/02C01P2004/16C01P2004/30H01G11/30H01G11/46H01G11/56H01G11/84H01G11/86Y02E60/13
Inventor 孙靖宇田政南邵元龙佟晓玲
Owner SUZHOU UNIV