Flexible planar micro energy storage device and its preparation method

A micro storage and device technology, applied in the field of energy storage devices, can solve the problems of no dispersion stability, easy to be oxidized, etc., and achieve the effects of excellent integration and scalability, improved electrochemical performance, and simple operation steps.

Active Publication Date: 2021-07-16
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its excellent activity and large surface tension, its surface is easily oxidized, and it does not have good dispersion stability in liquid

Method used

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  • Flexible planar micro energy storage device and its preparation method
  • Flexible planar micro energy storage device and its preparation method
  • Flexible planar micro energy storage device and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0051] A method for preparing a flexible planar micro energy storage device, the specific steps of the method are as follows:

[0052] (1) Preparation of conductive paste for printing and electrode water-based paste

example 1

[0053] Coating and dispersing gallium-indium alloy and polyacrylamide (PAM) with silk fibroin aqueous solution to adjust the viscosity to obtain a conductive paste for conductive substrates with good dispersion stability. The specific preparation method is shown in Supplementary Example 1;

[0054] Graphene was used as the 2D flake active material and dissolved in deionized water, the viscosity was adjusted to 35.03mPa·s with polyacrylamide (PAM), and ultrasonically dispersed for 30min to obtain a water-based electrode paste with good rheological properties, which was used in subsequent procedures Accurately align the positive and negative poles of energy storage devices;

[0055] Electrode water-based paste formula: graphene 0.6%, polyacrylamide (PAM) 0.33%, the balance is deionized water, and the total weight of the electrode water-based paste is 100%.

[0056] (2) Printing and precise alignment

[0057] Using the conductive paste prepared in step (1), with the aid of a 1cm...

Embodiment 2

[0069] A preparation method for constructing a 3D array graphene-based micro-supercapacitor by screen printing technology, the specific steps of the method are as follows:

[0070] (1) Preparation of conductive paste for printing and electrode water-based paste

[0071] Dissolve 1g of silk fibroin in 20g of deionized water to form silk fibroin aqueous solution, then add 2g of gallium-indium alloy for ultrasonic dispersion, so that the silk fibroin aqueous solution is coated and dispersed with gallium-indium alloy to form a stable conductive ink, and then use polyethylene oxide (PEO) to adjust the viscosity to 12.37mPa·s to obtain a conductive paste for conductive substrates with good dispersion stability.

[0072] Graphene is used as the active material, polyethylene oxide (PEO) is used to adjust the viscosity, and deionized water is used as the solvent to prepare the electrode water-based paste (see Supplementary Example 2 for the specific preparation method), which is used f...

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Abstract

The invention relates to an energy storage system device, in particular to a flexible planar micro energy storage device and a preparation method thereof, belonging to the technical field of energy storage devices. A method for preparing a flexible planar micro-energy storage device, the energy storage device includes a conductive substrate, an active material, a gel electrolyte and an encapsulation material, the method comprising the following steps (1) preparation of a conductive paste for printing and an aqueous electrode paste , (2) Printing and precise alignment, (3) Coating gel electrolyte on the interdigitated pattern, encapsulating the obtained energy storage device, and obtaining a sealed planar interdigitated micro energy storage device product. The invention realizes all-round improvement of the mechanical flexibility, physical conductivity and electrochemical performance of the planar micro energy storage device, and is of great significance to the scalable development and production of flexible and wearable electronic devices.

Description

technical field [0001] The invention relates to an energy storage system device, in particular to a flexible planar micro energy storage device and a preparation method thereof, belonging to the technical field of energy storage devices. Background technique [0002] The rapid development of mobile Internet technology has promoted the continuous improvement of portable personal electronic products and the rapid replacement of smart phones, notebook computers, and tablet computers. Due to their large size and heavy weight, energy storage devices are limited in their application fields and cannot meet people's basic needs. In the future, these electronic products will definitely develop in the direction of miniaturization, flexibility, integration and intelligence. Micro energy storage devices have received extensive attention in recent years because of their miniaturization, planarization, multifunctionality, and integration characteristics. The development of a new generati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/36H01M10/38H01G11/04H01G11/84B81B7/00
CPCB81B7/00B81B2201/00H01G11/04H01G11/84H01M10/36H01M10/38Y02E60/10Y02P70/50
Inventor 胡毅张亚茹程钟灵倪长克王子希许仕林
Owner ZHEJIANG SCI-TECH UNIV
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