Flexible super capacitor and preparation method of flexible super capacitor

A supercapacitor, flexible technology, used in the manufacture of hybrid capacitor electrolytes and hybrid/electric double-layer capacitors, etc., can solve the problems of small electrochemical window, flammability, and complex process of electrolyte, and achieve a wide range of voltage and temperature applications. Effect

Inactive Publication Date: 2016-12-14
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Application Information

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Problems solved by technology

[0002] In related technologies, supercapacitors generally need to be injected with electrolyte. On the one hand, the traditional liquid injection method is complicated in process and high in production cost, which is not suitable for large-scale production of

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  • Flexible super capacitor and preparation method of flexible super capacitor
  • Flexible super capacitor and preparation method of flexible super capacitor
  • Flexible super capacitor and preparation method of flexible super capacitor

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preparation example Construction

[0087] see Figure 4 , the preparation method of the flexible supercapacitor 10 of the embodiment of the present invention, comprising:

[0088] Step S10, provide packaging film 11, first electrode 12 and second electrode 13, first electrode 12 includes first pole piece 122, second electrode 13 includes second pole piece 132, first pole piece 122 and second pole piece 132 is made of the same material;

[0089] Step S20, soaking the separator in the gel electrolyte of the ionic liquid and then absorbing the gel electrolyte to prepare the electrolyte film 14; and

[0090] Step S30, disposing the first electrode 12 and the second electrode 13 on opposite sides of the electrolyte membrane 14 and pressing them tightly;

[0091] Step S40 , encapsulating the electrolyte film 14 with the first electrode 12 and the second electrode 13 with the encapsulation film 11 .

[0092] The method for preparing the flexible supercapacitor 10 according to the embodiment of the present invention...

Embodiment 1

[0137] Activated carbon: Ketjen black: PVDF is used to prepare the slurry according to the mass ratio of 80:10:10, and then coat it on the current collector aluminum foil as the first pole piece 122 and the second pole piece 132, dry and cut it into 40mm* 50mm. Mix 1-ethyl-3-methylimidazole bistrifluoromethanesulfonimide salt, polyethylene oxide and benzophenone at a ratio of 10:1:0.05, heat to 100°C and keep it warm for two hours, and irradiate with UV for 4 minutes. The gel electrolyte can be obtained, and the electrolyte film 14 is obtained by soaking the non-woven membrane FPC3018 in the gel electrolyte. A: B of PMDS is mixed at a mass ratio of 10:1 to remove air bubbles and form a film.

[0138] The first electrode 12, the second electrode 13 and the electrolyte film 14 are made into a sandwich structure for supercapacitance under the action of 1 MPa. Finally, after the film-formed PDMS is treated with oxygen plasma, the supercapacitor is sandwiched up and down, and bon...

Embodiment 2

[0140] Adopt carbon nanotubes: Ketjen black: PVDF to prepare slurry by mass ratio 60:30:10, then apply it on the current collector aluminum foil as the first pole piece 122 and the second pole piece 132, dry and cut into 60mm*80mm. Mix 1-butyl-1-methylpyrrolidine bistrifluoromethanesulfonimide salt, polyethylene oxide and benzophenone at a ratio of 15:1:0.05, heat to 120°C and keep it warm for 24 hours, and irradiate with UV light for 10 minutes. The gel electrolyte can be obtained, and the electrolyte film 14 is obtained by coating the gel electrolyte on both sides of the cellulose diaphragm TF48.

[0141] The first electrode 12, the second electrode 13 and the electrolyte film 14 are made into a sandwich structure for supercapacitance under the action of 2 MPa. Finally, sandwich the supercapacitor up and down with the PET film coated with EVA particles, and glue and package it under a hot press at 120°C and 1Mpa to obtain the flexible supercapacitor 10 according to the embo...

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Abstract

The invention discloses a flexible super capacitor. The flexible super capacitor comprises a packaging thin film, a first electrode, a second electrode and an electrolyte thin film located between the first electrode and the second electrode; the first electrode comprises a first pole piece, and the second electrode comprises a second pole piece; the first pole piece and the second pole piece are made of the same material; the electrolyte film is prepared by adsorbing a gel electrolyte after a diaphragm is soaked in the gel electrolyte of ionic liquid or prepared by coating the gel electrolyte of the ionic liquid on the diaphragm. Moreover, the invention further discloses a preparation method of the flexible super capacitor. According to the flexible super capacitor and the preparation method thereof provided by the invention, since the electrolyte thin film is prepared by adopting the gel electrolyte of the ionic liquid with a high conductivity, the flexible super capacitor does not need a traditional liquid injection process, and the scope of application of voltage and temperature is wide, thus the flexible super capacitor is suitable for pipelined large-scale production.

Description

technical field [0001] The invention relates to the technical field of electric energy storage, in particular to a flexible supercapacitor and a method for preparing the flexible supercapacitor. Background technique [0002] In related technologies, supercapacitors generally need to be injected with electrolyte. On the one hand, the traditional liquid injection method is complicated in process and high in production cost, which is not suitable for large-scale production of pipelines and cannot be widely used in commercial applications; on the other hand, due to Electrolyte has the shortcomings of small electrochemical window, volatile and flammable, resulting in a small range of voltage and temperature for supercapacitors. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, the present invention needs to provide a kind of flexible supercapacitor and the preparation method...

Claims

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Application Information

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IPC IPC(8): H01G11/56H01G11/84
CPCY02E60/13H01G11/56H01G11/84
Inventor 徐保民钟熊伟孙政唐俊
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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