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Flexible all-solid transparent supercapacitor with sandwich structure and preparation method thereof

A supercapacitor and sandwich technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, hybrid capacitor electrolytes, etc., can solve the problems of high cost, small capacitance, and complicated operation, and achieve low instrument requirements and high area ratio Capacitance, the effect of simple operation

Inactive Publication Date: 2018-11-06
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It has been reported before that a single PEDOT:PSS electrode or a silver grid / PEDOT:PSS composite electrode is used to prepare a sandwich-structured flexible all-solid-state supercapacitor, but there are generally problems such as complex operation, high cost, and small capacitance. Silver nanowire / PEDOT:PSS composite electrode to prepare supercapacitor, which solves the above problems

Method used

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  • Flexible all-solid transparent supercapacitor with sandwich structure and preparation method thereof
  • Flexible all-solid transparent supercapacitor with sandwich structure and preparation method thereof
  • Flexible all-solid transparent supercapacitor with sandwich structure and preparation method thereof

Examples

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Embodiment 1

[0037] (1) Polyvinyl alcohol, H 3 PO 4 Add deionized water into a glass bottle and mix, then heat and stir at 95°C until a uniform gel electrolyte is formed; (2) Poly 3,4-ethylenedioxythiophene: polystyrene sulfonate (PEDOT:PSS) stock solution After filtering through a 0.5 μm water-based filter head, 6 vol% ethylene glycol and 2 vol% Triton (Triton-X 100) were added, and ultrasonically dispersed to form a uniform solution. (3) Cut out several PET sheets, and then plasma treat PET (100 w / 5min); (4) ultra-long silver nanowires (75 μm / 120nm) are uniformly dispersed in ethanol solution (0.36wt%), such as figure 1 As shown, then spin-coat twice (3000rpm / 60s) on the PET substrate, and anneal at 120°C for 15min to form a silver nanowire transparent electrode; (5) spin-coat PEDOT:PSS solution on the silver nanowire electrode subsequently ( 500rpm / 5s, 1500rpm / 55s), and then annealed at 120°C for 15min to prepare a composite electrode with a layer of PEDOT:PSS; A transparent and flex...

Embodiment 2

[0039] (1) Polyvinyl alcohol, phosphoric acid (H 3 PO 4 ) and deionized water were added to a glass bottle and mixed, then heated and stirred at 95°C until a uniform gel electrolyte was formed; (2) poly 3,4-ethylenedioxythiophene: polystyrene sulfonate (PEDOT:PSS) The stock solution was filtered through a 0.5 μm water-based filter head, and then 6 vol% ethylene glycol and 2 vol% Triton (Triton-X100) were added, and ultrasonically dispersed to form a uniform solution. (3) Cut out several PET sheets, and then plasma treat PET (100w / 5min); (4) Ultra-long silver nanowires (75μm / 120nm) are uniformly dispersed in ethanol solution (0.36wt%), and then on the PET substrate (500rpm / 5 s, 1500rpm / 55s), then annealed at 120°C for 15min, and repeated the same operation once to prepare a composite electrode with two layers of PEDOT:PSS, such as figure 2 As shown, PEDOT:PSS is annealed to form crystals covering the silver nanowires, forming a dense film; (6) Add electrolyte on two identi...

Embodiment 3

[0041] (1) Polyvinyl alcohol, phosphoric acid (H 3 PO 4 ) and deionized water were added to a glass bottle and mixed, then heated and stirred at 95°C until a uniform gel electrolyte was formed; (2) poly 3,4-ethylenedioxythiophene: polystyrene sulfonate (PEDOT:PSS) The stock solution was filtered through a 0.5 μm water-based filter head, and then 6 vol% ethylene glycol and 2 vol% Triton (Triton-X100) were added, and ultrasonically dispersed to form a uniform solution. (3) Cut out several PET sheets, and then plasma treat PET (100w / 5min); (4) Ultra-long silver nanowires (75μm / 120nm) are uniformly dispersed in ethanol solution (0.36wt%), and then on the PET substrate (500rpm / 5 s, 1500rpm / 55s), then annealed at 120°C for 15min, and repeated the same operation twice to prepare a composite electrode with three layers of PEDOT:PSS; (6) Add electrolyte on two identical composite electrodes, air-dry at room temperature, and then A transparent flexible supercapacitor with a sandwich...

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Abstract

The invention discloses a flexible all-solid transparent supercapacitor with a sandwich structure and a preparation method thereof. The supercapacitor adopts a flexible transparent conductive thin film as an electrode and ionic gel as an electrolyte, wherein the conductive thin film is a flexible substrate / metal nanowires / a conductive polymer; the flexible substrate is PET, the metal nanowires areultra-long AgNWs, and the conductive polymer is PEDOT:PSS. The method includes the following steps: spin coating AgNWs dispersion liquid and the doped PEDOT:PSS on the PET to prepare flexible transparent composite electrodes; and then adding the electrolyte to the two pieces of composite electrodes, and performing relative compression to prepare a transparent flexible supercapacitor with a sandwich structure. The flexible all-solid transparent supercapacitor prepared by the invention has good transparency, flexibility and electrochemical performance, has a huge potential to be used in show windows to power buildings, and can also be used for clothes and handbags to charge electronic equipment.

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, in particular to a sandwich structure flexible all-solid transparent supercapacitor and a preparation method thereof. Background technique [0002] Due to the decline of fossil fuels and climate change, the quest for renewable and sustainable energy sources has been strong. Renewable energy from wind energy and solar energy needs to be converted and stored. As an electrochemical energy storage system, supercapacitors have attracted more and more attention and research. Combining the advantages of high specific capacitance and energy density, simple structure, stable performance, and long service life, it can meet the needs of various energy storage. The energy stored in electrochemical capacitors includes capacitance and pseudocapacitance. Capacitive (non-faradaic) processes are based on the separation of charges at the electrode-electrolyte interface, while pseudo (faradaic) capacitanc...

Claims

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Application Information

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IPC IPC(8): H01G11/26H01G11/28H01G11/48H01G11/56H01G11/84
CPCH01G11/26H01G11/28H01G11/48H01G11/56H01G11/84Y02E60/13
Inventor 赖文勇李东东刘星黄维
Owner NANJING UNIV OF POSTS & TELECOMM
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