PEDOT:PSS fiber and preparation method thereof

A fiber and primary fiber technology, applied in the field of materials, can solve the problems of high air pollution, great injury to operators, poor mechanical properties and electrical conductivity of fibers, etc., and achieve improved electrochemical performance, simple equipment, fiber mechanical properties and electrical properties. The effect of excellent performance

Active Publication Date: 2017-02-08
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing wet spinning uses toxic and harmful substances such as acetone, isopropanol, and methanol as coagulation baths. During the preparation process, the air pollution is large and the operators are seriously injured. Moreover, the mechanical properties and electrical conductivity of PEDOT:PSS fibers are generally not good. good

Method used

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  • PEDOT:PSS fiber and preparation method thereof
  • PEDOT:PSS fiber and preparation method thereof
  • PEDOT:PSS fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] First, stir and disperse anhydrous calcium chloride solid particles in distilled water to prepare a calcium chloride aqueous solution with a mass fraction of 10%, then add 3 times the volume of absolute ethanol, and stir evenly to obtain a green and environment-friendly coagulation bath. Then, use a syringe with an inner diameter of 0.9mm to draw a PEDOT:PSS aqueous solution with a concentration of 5mg / ml, then connect a cylindrical needle with an inner diameter of 0.21mm, and inject the spinning stock solution into the In the coagulation bath, after standing and soaking for 30 minutes, the as-spun fibers were obtained. Next, transfer the nascent fiber from the coagulation bath to ethylene glycol for soaking. After soaking, transfer the fiber from ethylene glycol to distilled water for cleaning, and then spread it on a Teflon plate, and let it dry naturally in the air. Dry it in the air, and then put it into an oven at 120°C for heat treatment. Finally, the PTFE flat p...

Embodiment 2

[0048] First, stir and disperse anhydrous calcium chloride solid particles in distilled water to prepare a calcium chloride aqueous solution with a mass fraction of 10%, then add 3 times the volume of absolute ethanol, and stir evenly to obtain a green and environment-friendly coagulation bath. Then, use a syringe with an inner diameter of 0.9mm to draw a PEDOT:PSS aqueous solution with a concentration of 12mg / ml, connect it to a cylindrical needle with an inner diameter of 0.21mm, and inject the spinning stock solution to the solidified state at an injection speed of 0.66ml / min with a micro-injection pump. After soaking in the bath for 30 minutes, the as-spun fibers were obtained. Next, the as-spun fibers are transferred from the coagulation bath to concentrated sulfuric acid for soaking. After soaking, the fibers are transferred from the concentrated sulfuric acid to distilled water for cleaning, and then spread on a Teflon flat plate to dry naturally in the air. , and then ...

Embodiment 3

[0052] First, stir and disperse anhydrous calcium chloride solid particles in distilled water to prepare an 8% calcium chloride aqueous solution, then add 3 times the volume of absolute ethanol, and stir evenly to obtain a green and environment-friendly coagulation bath. Then, use a syringe to extract the PEDOT:PSS aqueous solution with a concentration of 10 mg / ml, then connect it with a cylindrical needle with an inner diameter of 0.51 mm, inject the spinning stock solution into the coagulation bath with a micro-injection pump at an injection speed of 1 ml / min, and let it stand After soaking for 30 minutes, primary fibers were obtained. Next, the as-spun fibers are transferred from the coagulation bath to concentrated sulfuric acid for soaking. After soaking, the fibers are transferred from the concentrated sulfuric acid to distilled water for cleaning, and then spread on a Teflon flat plate to dry naturally in the air. , and then placed in a 100°C oven for heat treatment. F...

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Abstract

The invention discloses a PEDOT:PSS fiber and a preparation method thereof. A wet spinning technology is adopted, low toxicity and low harm, green and environment-friendly mixed solution of inorganic salt, ethanol and water is adopted as coagulation bath, a PEDOT:PSS aqueous solution is taken as the main raw material, through a simple chemical treatment method, the PEDOT:PSS fiber with excellent electrical conductivity and mechanical properties can be prepared. The PEDOT:PSS fiber can be used directly as a lightweight flexible lead, also can be used for the electrode of a linear flexible capacitor, and can exhibit rapid voltage change response and high specific capacity. Compared with the prior art, the method provided by the invention has the prominent advantages of safety, green and environmental protection, and the fiber has large strength and good flexibility. At the same time, the equipment and method are simple, and can achieve large-scale production of PEDOT:PSS fiber with good mechanical properties, high electrical conductivity and good electrochemical properties.

Description

technical field [0001] Embodiments of the present invention relate to the fields of materials and electrochemistry, more specifically, embodiments of the present invention relate to poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS) fibers and its preparation method. Background technique [0002] The gradual rise and development of wearable electronic devices and intelligent robots will bring greater changes to people's lives. Wearable devices must weave power sources (such as batteries, capacitors and other energy storage devices) with textiles to achieve integrity and aesthetics, so they must work in a distorted state; and distributed in the bionic muscles of intelligent robots, The power sources of skin, bones and other parts need to adapt to the mechanical environment of repeated action; for the purpose of application, these power sources must meet the requirements of miniaturization, light weight, flexibility, high energy density, and high power de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/16D01F8/10D01D5/06D01D10/02D01D10/06
CPCD01D5/06D01D10/02D01D10/06D01F8/10D01F8/16
Inventor 王斌程建丽李波袁德茂
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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