High-frequency response porous PEDOT: PSS thin-film material and preparation method and application thereof

A high-frequency response and thin-film material technology, applied in the field of filter capacitors, can solve the problems of hindering the exposure of PEDOT active sites and large internal resistance

Active Publication Date: 2020-10-27
HENAN AGRICULTURAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, the conductive polymer material PEDOT:PSS (poly3,4-ethylenedioxythiophene/polystyrene sulfonate) is used to prepare filter supercapacitors, which is becoming a research hotspot, but the PSS chain in polymer electrode materials On the one hand, the transport of charges is limited, on the other hand, the exposure of the active sites of PEDOT is hindered, and the internal resistance caused by the electrode material itself is very large. Therefore, a n

Method used

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  • High-frequency response porous PEDOT: PSS thin-film material and preparation method and application thereof
  • High-frequency response porous PEDOT: PSS thin-film material and preparation method and application thereof

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[0031] Example 1

[0032] The preparation method of high frequency response porous PEDOT:PSS thin film material is as follows:

[0033] Step 1. Take 50 μL of PEDOT:PSS aqueous solution into a 1.5 mL centrifuge tube, add 13 vol% polar co-solvent DMSO, ultrasonically mix well to obtain a mixed solution;

[0034] Step 2: Take 9 μL of the mixed solution obtained in Step 1 with a pipette and spin-coated on filter paper, and place it in an oven at 80°C for 10 minutes;

[0035] Step 3: Treat the above samples with concentrated sulfuric acid at room temperature for 12-24 h;

[0036] Step 4. Clean with deionized water and place it in an oven at 80 ℃ to dry for 2~3 minutes to obtain a high frequency response porous PEDOT:PSS film material with an area of ​​0.5×0.5 cm 2 .

[0037] Performance Testing

[0038] ① Scanning electron microscope characterization

[0039] The morphology of the high-frequency response porous PEDOT:PSS thin film material prepared in Example 1 was characterized by scanning ele...

Example Embodiment

[0044] Example 2

[0045] Others are the same as Example 1, except that the volume percentage of the co-solvent DMSO added is 0 vol%.

Example Embodiment

[0046] Example 3

[0047] Others are the same as in Example 1, except that the volume percentage of the co-solvent DMSO added is 5 vol%.

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Abstract

The invention discloses a high-frequency response porous PEDOT: 1. PSS thin-film material. The preparation method is based on a high-molecular polymer PEDOT/PSS (poly 3, 4-ethylenedioxythiophene/polystyrene sulfonate). The preparation method comprises the following steps of: adding a polar cosolvent DMSO (dimethyl sulfoxide) into a PEDOT/PSS aqueous solution; uniformly stirring, spin-coating filter paper with the mixed solution, putting the PEDOT: PSS thin film material into a drying oven, drying at 80 DEG C for 10 minutes, treating with concentrated sulfuric acid at room temperature for 12-24hours, washing with deionized water, and finally drying to obtain the high-frequency response porous PEDOT: PSS thin-film material. The supercapacitor prepared from the high-frequency response porousPEDOT: PSS thin-film material has the advantages of high energy density, small internal resistance and good high-frequency responsiveness.

Description

technical field [0001] The invention belongs to the field of filter capacitors, and in particular relates to a high-frequency response porous PEDOT:PSS film material and its preparation method and application. Background technique [0002] In recent years, Internet of Things (IoT) technologies have facilitated the development of renewable microgenerators that harvest environmental energy such as wind energy, friction energy, and vibration energy. However, the low-frequency pulse signal of the micro-generator is inefficient and needs to be rectified and filtered to obtain a stable and continuous DC signal. Electrochemical capacitors (ECs) have the advantages of simple construction, high specific capacitance, good rate capability, and frequency adaptability, providing promising candidates for next-generation filtering devices. [0003] Conductive polymer electrode materials have good rate performance and a specific capacitance much larger than ordinary carbon electrode materi...

Claims

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Application Information

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IPC IPC(8): C08J9/28C08J9/26C08J5/18C08L65/00C08L25/18H01G11/24H01G11/48H01G11/86
CPCC08J5/18C08J9/0061C08J9/26C08J9/286C08J2201/046C08J2201/0502C08J2325/18C08J2365/00H01G11/24H01G11/48H01G11/86Y02E60/13
Inventor 王丽霞李洲李向荣王霄鹏贾树恒李鑫赵士举
Owner HENAN AGRICULTURAL UNIVERSITY
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