Functionalized graphene hydrogel/functionalized carbon cloth composite fabric, flexible all-solid-state supercapacitor integrated electrode and preparation method

A composite fabric and hydrogel technology, which is applied in the manufacture of hybrid capacitor electrodes, hybrid capacitor current collectors, and hybrid/electric double layer capacitors, can solve the problems of inability to fill the gaps and large pores of carbon cloth, and achieve high redox Effects of activity and charge storage capacity, improved capacitance, and improved cycling stability
CN109461593AActive Publication Date: 2019-03-12HUNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUNAN UNIV
Publication Date
2019-03-12

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Abstract

The invention discloses a functionalized graphene hydrogel / functionalized carbon cloth composite fabric, a flexible all-solid-state supercapacitor integrated electrode and a preparation method. Functionalized graphene hydrogel is fixed in a functionalized carbon cloth frame through a one-step hydrothermal method, and then lignin / polyaniline composite hydrogel and the functionalized graphene hydrogel / functionalized carbon cloth composite fabric are prepared into the flexible all-solid-state supercapacitor integrated electrode by adopting an in-situ polymerization method. According to the method, the functionalized graphene hydrogel is used for filling gaps and macroscopic macropores in carbon cloth, and serves as a 3D conductive scaffold, so that the load of active substances in the electrode can be obviously increased, the interface resistance of the electrode is reduced, and the conductivity of the electrode is improved; and the prepared integrated electrode is assembled into a symmetric supercapacitor which shows excellent area capacitance, super-high energy density, high mechanical flexibility and cycling stability.
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Description

technical field

[0001] The invention relates to an integrated electrode for a supercapacitor, in particular to a flexible, large-area integrated fabric formed by anchoring a functionalized graphene hydrogel in a functionalized carbon cloth frame, and utilizing the functionalized graphene hydrogel / functional The invention discloses a flexible all-solid-state supercapacitor integrated electrode composed of in-situ loaded lignin / polyaniline hydrogel active material on a carbonized carbon cloth composite fabric, and also relates to a preparation method of the integrated electrode, which belongs to the technical field of energy storage. Background technique

[0002] With the increasing demand for portable and wearable electronic devices, flexible supercapacitors have attracted much attention due to their excellent flexibility and deformability, high power density, fast charge-discharge speed, and long cycle life. Under the limited use area and space, the area capacitance and its ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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