Super capacitor capable of changing colors and being stretched and manufacturing method thereof

Abstract

The invention belongs to the technical field of intelligent energy storages, and particularly relates to a super capacitor capable of changing colors and being stretched and a manufacturing method thereof. According to the super capacitor, a carbon nano tube film is evenly laid on an elastic polydimethylsiloxane substrate in a stretched state, polyaniline is electrodeposited on the carbon nano tube film, and the carbon nano tube film serves as one electrode after pull force on polydimethylsiloxane is eliminated; a hole and the surface of a carbon nano tube / polyaniline combination electrode are evenly coated with a layer of polyvinyl alcohol / phosphoric acid gelatinous electrolytes, then the carbon nano tube / polyaniline combination electrode and the other electrode which is made of the same material and has the same structure are assembled, and the intelligent super capacitor capable of being stretched can be obtained. The super capacitor not only has good flexibility and stretchability, but also can display different colors along with different voltages of the two electrodes, different energy storage states can be displayed through color states, and therefore a good application prospect is obtained.

Description

technical field

[0001] The invention belongs to the technical field of micro energy storage devices, and in particular relates to an intelligent stretchable supercapacitor composite material and its preparation method and application. Background technique

[0002] In recent years, supercapacitors as energy storage devices have attracted extensive attention due to their high specific capacity and energy density. In addition to numerous studies devoted to improving their electrochemical performance, there are also numerous studies attempting to combine supercapacitors with other functions to expand their application fields. For example, in order to meet the development needs of portable and weavable electronic devices, researchers have developed flexible and stretchable supercapacitors. The current stretchable supercapacitor can stretch up to 60%, and it needs to be further improved in practical applications. In addition, it is also important to make the device intelligent. ...

Examples

Embodiment Construction

[0047] Prepare polydimethylsiloxane elastic matrix according to the prior art, that is, by mixing polydimethylsiloxane precursor and curing agent (Sylgard 184, both from Dow) with a mass ratio of 10 / 1, and Spin-coating at 930 rpm for 10 s, followed by curing at 60-100 °C for 0.5-2 h to obtain a stretchable film with a thickness of 150 μm. The carbon nanotube film used in the electrode material is first prepared by the so-called chemical vapor deposition method to prepare the carbon nanotube array, and then the corresponding fiber and film are prepared by dry spinning. The conventional practice is to first coat Fe (1.2 nm) / Al in a quartz tube furnace 2 o 3 (3 nm) silicon wafer as catalyst, ethylene gas as carbon source, Ar and H 2 The mixed gas was used as the carrier gas, and the temperature was raised to 740 °C, and the carbon nanotubes began to grow, and the growth time was controlled at 10-20 min. After obtaining the super-aligned carbon nanotube array, a blade is used ...

technical field

[0001] The invention belongs to the technical field of micro energy storage devices, and in particular relates to an intelligent stretchable supercapacitor composite material and its preparation method and application. Background technique

[0002] In recent years, supercapacitors as energy storage devices have attracted extensive attention due to their high specific capacity and energy density. In addition to numerous studies devoted to improving their electrochemical performance, there are also numerous studies attempting to combine supercapacitors with other functions to expand their application fields. For example, in order to meet the development needs of portable and weavable electronic devices, researchers have developed flexible and stretchable supercapacitors. The current stretchable supercapacitor can stretch up to 60%, and it needs to be further improved in practical applications. In addition, it is also important to make the device intelligent. ...

Examples

Embodiment Construction

[0047] Prepare polydimethylsiloxane elastic matrix according to the prior art, that is, by mixing polydimethylsiloxane precursor and curing agent (Sylgard 184, both from Dow) with a mass ratio of 10 / 1, and Spin-coating at 930 rpm for 10 s, followed by curing at 60-100 °C for 0.5-2 h to obtain a stretchable film with a thickness of 150 μm. The carbon nanotube film used in the electrode material is first prepared by the so-called chemical vapor deposition method to prepare the carbon nanotube array, and then the corresponding fiber and film are prepared by dry spinning. The conventional practice is to first coat Fe (1.2 nm) / Al in a quartz tube furnace 2 o 3 (3 nm) silicon wafer as catalyst, ethylene gas as carbon source, Ar and H 2 The mixed gas was used as the carrier gas, and the temperature was raised to 740 °C, and the carbon nanotubes began to grow, and the growth time was controlled at 10-20 min. After obtaining the super-aligned carbon nanotube array, a blade is used ...

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