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A freestyle miniature supercapacitor based on laser graphics and a manufacturing method thereof

A technology for supercapacitors and manufacturing methods, which is applied in the manufacture of hybrid/electric double layer capacitors, electrodes for hybrid capacitors, nanotechnology for materials and surface science, etc. The problem of large capacitor thickness, etc., can reduce the thickness of the device, simplify the preparation process, and improve the effective working voltage and current density.

Active Publication Date: 2017-02-22
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the prior art and to solve the problems of large thickness and complex preparation process of the current sandwich supercapacitor, the purpose of the present invention is to provide a free-form miniature supercapacitor that can be manufactured in a large scale with high integration, using a planar electrode structure, The overall thickness of the device is greatly reduced, and the parameter design optimization of the interdigitated electrodes can be used to improve the energy and power density of the device, and it has good flexibility and portability

Method used

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  • A freestyle miniature supercapacitor based on laser graphics and a manufacturing method thereof
  • A freestyle miniature supercapacitor based on laser graphics and a manufacturing method thereof
  • A freestyle miniature supercapacitor based on laser graphics and a manufacturing method thereof

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Embodiment 1

[0050] Example 1: as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 shown,

[0051] A free-form micro supercapacitor based on laser patterning, the device includes: electrospun nanofibers, flexible electrodes, solid electrolytes, and metal current collectors. The electrospun nanofibers are prepared by electrospinning, such as polyvinylidene fluoride (PVDF), polyurethane (PU), etc.; the flexible electrodes are attached with multi-walled carbon nanofibers. tube (carbon nanotube, CNT) or other electrodes with flexible characteristics; the solid electrolyte is a gel polymer, including polyvinyl alcohol (PVA) and phosphoric acid (H 3 PO 4 ), sulfuric acid (H 2 SO 4 ), lithium chloride (LiCl), etc.; the metal current collector is a metal with good electrical conductivity, such as gold (Au), copper (Cu) and the like.

[0052] A free-form micro-supercapacitor based on laser patterning, through the las...

Embodiment 2

[0075] Example 2: as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, a laser-patterning-based free-form micro supercapacitor and a manufacturing method, comprising the following steps;

[0076] Step 1: Obtain PVDF powder, acetone and DMF organic solvent by weighing, mix the three evenly, and completely dissolve the PVDF powder by magnetic stirring to obtain a uniformly dispersed PVDF solution;

[0077] Step 2: through the process of electrospinning, the PVDF solution is deposited on the metal electrode 1 in a disorderly order by means of high voltage to obtain PVDF nanofibers 2;

[0078] Step 3: Obtain CNT and SDBS powder by weighing, mix the two evenly and add them into deionized water, and ultrasonicate the obtained solution at room temperature by means of water bath ultrasound, so that CNT and SDBS are fully contacted and completely dissolved in deionized water. In water, a uniformly d...

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Abstract

A freestyle miniature supercapacitor based on laser graphics and a manufacturing method thereof belong to the technical field of micro-power energy storage. The structure is composed of a solid electrolyte, a flexible electrode and a metal current collector from the bottom up. Carbon nanotubes are dispensed on electrospun nanofibers to obtain the flexible electrode. The present invention proposes the freestyle miniature supercapacitor which uses a planar interdigitated electrode. Compared with a conventional supercapacitor in a sandwich structure, the freestyle miniature supercapacitor has a much lower device thickness, higher device flexibility, and can be better integrated with flexibly electronic devices. Meanwhile, through use of the advantages of the high specific surface area and high conductivity of the electrospun nanofibers and the carbon nanotubess, the light and stable flexible electrode is manufactured to further improve the energy and power density. Compared with other miniature supercapacitors, the freestyle miniature supercapacitor of the invention has the much lower device thickness in a novel electrolyte transfer mode without any additional substrate, and the damage which may be brought for complex transfer technology can be avoided.

Description

technical field [0001] The invention relates to a free-type micro supercapacitor based on laser patterning and a manufacturing method, and belongs to the technical field of micro-energy energy storage. Background technique [0002] With the rapid development of various portable electronic devices, the demand for micro-energy is increasing day by day. In recent years, supercapacitors have become energy storage devices with good application prospects due to their high power density, good cycle stability, and fast charge-discharge speed [Simon, P. et al. Nature materials, vol. 7, pp. 845, 2008]. Nowadays, researchers have done a lot of work on the flexibility of electrode materials and processing methods, especially flexible solid-state supercapacitors with good stability, which can avoid leakage of electrolyte, improve the safety and stability of devices, and have good stability. The electrochemical performance has received extensive attention. [0003] However, with the de...

Claims

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Application Information

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IPC IPC(8): H01G11/26H01G11/24H01G11/86B82Y40/00B82Y30/00
CPCY02E60/13H01G11/26B82Y30/00B82Y40/00H01G11/24H01G11/86
Inventor 张海霞宋宇陈学先陈号天苏宗明
Owner PEKING UNIV
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