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Preparation method of flexible transparent super capacitor

A supercapacitor, transparent technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of not being able to adapt to the flexible bending of wearable devices, the specific capacity of transparent supercapacitors, and the shortage of rare metal indium resources, etc. Achieve the effects of reducing electron transport resistance, good electrochemical performance and optical performance, and ensuring light transmission properties

Inactive Publication Date: 2019-11-01
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ITO transparent conductive electrode used in this device is brittle and cannot adapt to the flexible bending of wearable devices. In addition, the rare metal indium used in the ITO electrode is in short supply and has a high cost. Therefore, in recent years, based on new transparent conductive electrodes. The prepared transparent flexible supercapacitors have attracted the attention of researchers, such as metal grids, metal nanowires, etc. Singh et al. used electrospinning combined with electrochemical deposition to obtain manganese dioxide / gold nanoparticles with a shell structure. Fiber network electrodes, which are assembled into solid-state supercapacitors, obtain 2.07mF / cm 2 capacity, while maintaining a good light transmittance of 79%, reflecting good electrical and optical properties
However, metal nanowire electrodes have inherent contact resistance and the specific capacity of the prepared transparent supercapacitor is small, so the study of transparent supercapacitors with high specific capacity based on metal network electrodes has become the focus of researchers.

Method used

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  • Preparation method of flexible transparent super capacitor
  • Preparation method of flexible transparent super capacitor
  • Preparation method of flexible transparent super capacitor

Examples

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Embodiment 1

[0047] Such as figure 1 As shown, the present embodiment 1 provides a method for preparing a flexible transparent supercapacitor based on the leaf vein metal network, comprising the following steps:

[0048] (1) Preparation of leaf vein mask

[0049] The method for preparing the leaf vein mask is detailed here.

[0050] (1) The leaves selected in this embodiment are magnolia leaves, choose mature magnolia leaves, clean the surface dust with deionized water, cut off the thick part of the veins, and dry for later use.

[0051] (2) Submerge the treated leaves in 0.1g / mL NaOH solution, heat to 70°C and keep warm for 3 hours, take them out after the leaves turn brown, and gently scrape off the mesophyll tissue between the vein structures with a fine brush, After cleaning, rinse with deionized water and absolute ethanol for 1 min respectively, and dry in a drying oven at 60° C. for 3 h for later use, and the preparation of the leaf vein mask is completed.

[0052] (2) Preparation...

Embodiment 2

[0095] The preparation method of the flexible transparent supercapacitor based on the leaf vein metal network provided in this embodiment comprises the following steps:

[0096] (1) Preparation of leaf vein mask

[0097] The method for preparing the leaf mask is detailed here.

[0098] (1) The leaves selected in this embodiment are magnolia leaves, choose mature magnolia leaves, clean the surface dust with deionized water, cut off the thick part of the veins, and dry for later use.

[0099] (2) Submerge the treated leaves in 0.1g / mL NaOH solution, heat to 70°C and keep warm for 3 hours, take them out after the leaves turn brown, and gently scrape off the mesophyll tissue between the vein structures with a fine brush, After cleaning, rinse with deionized water and absolute ethanol for 1 min respectively, and dry in a drying oven at 60° C. for 3 h for later use, and the preparation of the leaf mask is completed.

[0100] (2) Preparation of leaf vein patterns by photolithograph...

Embodiment 3

[0134] The preparation method of the flexible transparent supercapacitor based on the leaf vein metal network provided in this embodiment comprises the following steps:

[0135] (1) Preparation of leaf vein mask

[0136] The method for preparing the leaf mask is detailed here.

[0137] (1) The leaves selected in this embodiment are magnolia leaves, choose mature magnolia leaves, clean the surface dust with deionized water, cut off the thick part of the veins, and dry for later use.

[0138] (2) Submerge the treated leaves in 0.1g / mL NaOH solution, heat to 70°C and keep warm for 3 hours, take them out after the leaves turn brown, and gently scrape off the mesophyll tissue between the vein structures with a fine brush, After cleaning, rinse with deionized water and absolute ethanol for 1 min respectively, and dry in a drying oven at 60° C. for 3 h for later use, and the preparation of the leaf mask is completed.

[0139] (2) Preparation of leaf vein patterns by photolithograph...

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Abstract

The invention discloses a preparation method of a flexible transparent super capacitor. The preparation method comprises steps of (1), preparing leaf veins; (2), preparing a flexible film having linesof the leaf veins; (3), preparing a leaf vein electrode; (4), preparing a flexible transparent single electrode; (5), preparing transparent gel electrolyte; and (6), assembling a flexible transparentsuper capacitor. The preparation method is advantaged in that the prepared capacitor has large specific capacity, good light transmittance and low cost and further has good mechanical bending performance, electrochemical performance and optical performance.

Description

technical field [0001] The invention belongs to the technical field of energy storage devices, in particular to a method for preparing a flexible transparent supercapacitor, in particular to a method for preparing a flexible transparent supercapacitor based on leaf vein metal network electrodes. Background technique [0002] With the development of mobile electronic devices, consumers have put forward requirements for energy storage systems of mobile electronic products that are flexible, portable, wearable, and even have certain optical transparency. Therefore, it is particularly important to develop flexible and transparent energy storage devices. As the next generation of new energy storage devices, flexible transparent supercapacitors (Flexible Transparent supercapacitors) refer to the energy storage properties of traditional supercapacitors with fast charging, high power discharge, long cycle life and wide operating temperature range, as well as Energy storage devices w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/26H01G11/86
CPCH01G11/26H01G11/30H01G11/86Y02E60/13
Inventor 高进伟陈世铅史碧波何炜东彭海晖何珊
Owner SOUTH CHINA NORMAL UNIVERSITY
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