Low-impedance solid-liquid mixed electrolyte as well as preparation method and application thereof

A solid-liquid mixing, low-impedance technology, applied in the field of electrolytes to improve performance and increase capacity extraction rate

Active Publication Date: 2021-11-16
ZHUHAI LEAGUER CAPACITOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing solid-liquid mixed electrolyte (electrolyte) still has certain deficiencies in high temperature stability, capacity extraction rate and conductivity.

Method used

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  • Low-impedance solid-liquid mixed electrolyte as well as preparation method and application thereof
  • Low-impedance solid-liquid mixed electrolyte as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a low-impedance solid-liquid mixed electrolyte, comprising the following components in weight percentage: 8% of PEDOT / PSS polymer, 2% of sodium persulfate, 1% of sulfuric acid, 2% of polyethylene glycol, isopropanol 1%, sulfolane 20%, γ-butyrolactone 10%, p-nitrophenol 0.5%, boric acid 0.5%, salicylic acid 2%, ethylene glycol balance.

[0030] The preparation method of the low-impedance solid-liquid mixed electrolyte in this embodiment comprises the following steps:

[0031] (1) Add 3,4-ethylenedioxythiophene and sodium persulfate to water, add one-third of the total amount of sodium polystyrene sulfonate, heat to 50°C, stir mechanically for 10 minutes; cool to room temperature, and then Add one-third of the total amount of sodium polystyrene sulfonate, sulfuric acid, polyethylene glycol and isopropanol, heat to 50°C, and stir ultrasonically for 10 minutes; finally add the remaining sodium polystyrene sulfonate, stir ultrasonically for 20 minute...

Embodiment 2

[0034] The present embodiment provides a low-impedance solid-liquid mixed electrolyte, comprising the following components in weight percent: PEDOT / PSS polymer 8%, sodium persulfate 3%, sulfuric acid 1%, polyethylene glycol 1.5%, isopropanol 1%, sulfolane 15%, γ-butyrolactone 15%, p-nitrophenol 0.5%, boric acid 0.5%, salicylic acid 2%, ethylene glycol balance.

[0035] The preparation method of the low-impedance solid-liquid mixed electrolyte in this embodiment comprises the following steps:

[0036] (1) Add 3,4-ethylenedioxythiophene and sodium persulfate to water, add one-third of the total amount of sodium polystyrene sulfonate, heat to 55°C, and ultrasonically stir for 15 minutes; cool to room temperature, then add One-third of the total amount of sodium polystyrene sulfonate, and sulfuric acid, polyethylene glycol and isopropanol, heated to 50 ° C, ultrasonically stirred for 10 minutes; finally added the remaining sodium polystyrene sulfonate, ultrasonically stirred for 2...

Embodiment 3

[0039] This embodiment provides a low-impedance solid-liquid mixed electrolyte, comprising the following components in weight percentage: 8% of PEDOT / PSS polymer, 2% of sodium persulfate, 1% of sulfuric acid, 2% of polyethylene glycol, isopropanol 1%, p-nitrophenol 0.5%, boric acid 0.5%, salicylic acid 2%, the balance of ethylene glycol.

[0040] The preparation method of the low-impedance solid-liquid mixed electrolyte in this embodiment comprises the following steps:

[0041] (1) Add 3,4-ethylenedioxythiophene and sodium persulfate to water, add one-third of the total sodium polystyrene sulfonate, heat to 50°C, stir mechanically for 10 minutes; cool to room temperature, then add One-third of the total amount of sodium polystyrene sulfonate, and sulfuric acid, polyethylene glycol and isopropanol, heated to 50 ° C, ultrasonically stirred for 10 minutes; finally added the remaining sodium polystyrene sulfonate, ultrasonically stirred for 20 minutes, prepared Obtain PEDOT / PSS d...

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Abstract

The invention belongs to the technical field of electrolyte, and discloses low-impedance solid-liquid mixed electrolyte as well as a preparation method and application thereof. The solid-liquid mixed electrolyte comprises a PEDOT / PSS polymer. The operation of preparing the PEDOT / PSS polymer comprises step-by-step polymerization and ultrasonic stirring. The low-impedance solid-liquid mixed electrolyte is excellent in performance, and a capacitor prepared from the low-impedance solid-liquid mixed electrolyte has better capacity extraction rate, high temperature resistance and conductivity.

Description

technical field [0001] The invention belongs to the technical field of electrolytes, and in particular relates to a low-impedance solid-liquid mixed electrolyte and a preparation method and application thereof. Background technique [0002] At this stage, the technology of using conductive polymer polythiophene as the cathode material has greatly promoted the technical development of aluminum electrolytic capacitors. Compared with traditional liquid aluminum electrolytic capacitors, conductive polymer solid aluminum electrolytic capacitors have great advantages in low temperature performance and high frequency characteristics, and can adapt to high power, high frequency, and large ripple filtering applications, but there are also large leakage, Problems such as poor anti-surge voltage capability. Aluminum electrolytic capacitors made of solid-liquid mixed electrolytes can better combine the advantages of solid and liquid, so they are rapidly applied in industries such as ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/025H01G9/035C08J3/03C08L65/00C08L25/18
CPCH01G9/035H01G9/025C08J3/03C08J2365/00C08J2425/18C08J2325/18C08J2465/00
Inventor 潘登吉泽锋刘平苏秀娟杨阳
Owner ZHUHAI LEAGUER CAPACITOR
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