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Preparation method of self-healing flexible solid-state supercapacitor

A supercapacitor and flexible technology, applied in the field of capacitors, can solve the problems of low electrical conductivity, great environmental hazards, and reduce equipment costs, and achieve the effects of improving mechanical properties, reducing interface resistance, and good self-healing performance.

Active Publication Date: 2019-11-05
INT ACAD OF OPTOELECTRONICS AT ZHAOQING SOUTH CHINA NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Dry solid polymer electrolytes have low conductivity at room temperature (10 8 ~10 7 S / cm), the use is limited, so the gel polymer electrolyte has become the focus of research, but its preparation generally uses organic solvents, which are harmful to the environment. Although the electrochemical stability window of water is only 1.23V, replacing organic electrolytes with water Solvent preparation of gel electrolytes has become a need and also reduces equipment cost

Method used

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  • Preparation method of self-healing flexible solid-state supercapacitor
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  • Preparation method of self-healing flexible solid-state supercapacitor

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Embodiment 1

[0019] The preparation method of described self-healing flexible solid-state supercapacitor comprises the following steps:

[0020] (1) Preparation of polydopamine-polyacrylamide-sulfuric acid hydrogel: first, 0.02 g of dopamine hydrochloride powder was dissolved in 10 mL of NaOH aqueous solution with a pH value of 11, and stirred for 20 min at a stirring speed of 350 r / min to obtain a uniform solution; then Mix 2g of acrylamide, 0.25g of ammonium persulfate, 10μL of tetramethylethylenediamine, 0.98g of H 2 SO 4 and 0.003g of thiosalicylic acid were added to the homogeneous solution in sequence, stirred in an ice bath at 0°C for 10min at a stirring speed of 350r / min, and finally reacted in a water bath at 70°C for 12h to form polydopamine-polyacrylamide - sulfuric acid hydrogel;

[0021] (2) Preparation of polyaniline flexible supercapacitor: soak polydopamine-polyacrylamide-sulfuric acid hydrogel obtained in step (1) in 0.093g aniline, 0.228g ammonium persulfate and 0.98gH ...

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Abstract

The invention belongs to the technical field of capacitors, and particularly relates to a preparation method of a self-healing flexible solid-state supercapacitor. The preparation method of the self-healing flexible solid-state supercapacitor comprises the following steps: (1) preparing polydopamine-polyacrylamide-sulfuric acid hydrogel; (2) preparing a polyaniline flexible supercapacitor. According to the method, the hydrogel capacitor is synthesized in one step, so large interface resistance caused by poor contact between an electrode material and an electrolyte is greatly reduced, and the contact between the electrolyte and a conductive polymer improves the performance of the supercapacitor by providing excellent electrochemical dynamic performance and remarkable structural stability.

Description

technical field [0001] The invention belongs to the technical field of capacitors, and in particular relates to a preparation method of a self-healing flexible solid supercapacitor. Background technique [0002] With the continuous development of the economy, the depletion of oil resources, the pollution of the environment and the deterioration of the global climate are all intensifying. The development and comprehensive utilization of new energy and energy-saving technologies have become a very necessary topic. As the most promising green new energy in this century, supercapacitors are gradually being applied to various fields. Nowadays, flexible energy storage devices (batteries such as supercapacitors) have received extensive attention. Flexible all-solid-state supercapacitors represent a new class of flexible devices that can work under bending, stretching, and even twisting conditions. However, it is still a great challenge to obtain all-solid-state supercapacitors wit...

Claims

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Application Information

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IPC IPC(8): H01G11/56H01G11/84
CPCH01G11/56H01G11/84Y02E60/13
Inventor 董玉成林叶茂
Owner INT ACAD OF OPTOELECTRONICS AT ZHAOQING SOUTH CHINA NORMAL UNIV
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