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Preparation methods of bacterial cellulose-carbon nanotube/polyaniline composite microfibers and miniature supercapacitor

A bacterial cellulose and supercapacitor technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of insoluble in organic solvents, poor conductivity, etc., and achieve easy programming, high specific capacity, and high flexibility Effect

Inactive Publication Date: 2019-08-23
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the conjugated delocalized structure of PANI makes it difficult to dissolve in organic solvents, and has poor electrical conductivity in neutral and alkaline environments, so its application is restricted.

Method used

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  • Preparation methods of bacterial cellulose-carbon nanotube/polyaniline composite microfibers and miniature supercapacitor
  • Preparation methods of bacterial cellulose-carbon nanotube/polyaniline composite microfibers and miniature supercapacitor
  • Preparation methods of bacterial cellulose-carbon nanotube/polyaniline composite microfibers and miniature supercapacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0051] Reaction microchannel: a core cavity is built into the tube cavity, and a tube cavity outside the core cavity is a sheath cavity; the entrances of the core cavity and the sheath cavity are respectively connected to the core tube and the sheath tube.

[0052] self made:

[0053]Step 1: Insert a plastic steel needle (core lumen) with an inner diameter of 0.61mm coaxially into another plastic steel needle (lumen) with an inner diameter of 0.84mm; a third plastic steel needle (sheath tube) with an inner diameter of 0.61mm ) into the 0.84mm needle from the side, so that the gap (sheath cavity) between the third needle and the first two needles communicates;

[0054] Step 2: After fixing the joint with α-ethyl cyanoacrylate as an instant adhesive, a Y-shaped microchannel was established. Raw materials enter from two inlets and then go out from the same outlet, forming a core-shell structure.

[0055] Example:

[0056] A bacterial cellulose-carbon nanotube / polyaniline compo...

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Abstract

The invention discloses a preparation method of bacterial cellulose-carbon nanotube / polyaniline composite microfibers, and the method comprises the steps: based on the microfluid spinning technology,taking a SA and BC-CNT dispersoid as a core layer, taking calcium chloride as a sheath layer, and forming the BC-CNT gel fibers through chelation; carrying out coagulating bath, washing, thermal shrinkage and cooling; soaking the prepared BC-CNT fibers into an aniline dispersoid, and adding an ammonium persulfate solution for reaction; and preparing the BC / CNT / PANI fibers. The preparation method of the miniature supercapacitor comprises the following steps: placing two composite microfibers on a PDMS substrate in parallel; respectively fixing the tails with copper wires; and then covering thesubstrate with a gel electrolyte and a PDMS precursor. The specific surface area and the electrochemical performance are increased through a layered core sheath and a porous structure in the compositemicrofibers, so that the supercapacitor has high energy density, high power density, good circulation retention capability and bending capability, and can be widely applied to portable and miniaturized electronic equipment.

Description

technical field [0001] The invention relates to a bacterial cellulose-carbon nanotube / polyaniline composite microfiber, in particular to a preparation method of bacterial cellulose-carbon nanotube / polyaniline composite microfiber and a preparation method of a micro supercapacitor, belonging to macromolecule The technical field of composite conductive materials. Background technique [0002] Carbon nanotubes (CNTs) are one-dimensional nano-quantum materials with a special structure. The diameter is on the order of nanometers (1-100nm), and the length is on the order of micrometers. Both ends of the tube are generally sealed. Carbon nanotubes are mainly composed of six-membered ring structures (carbon atoms sp 2 Hybrid) composed of single or several layers of coaxial tubes, the layer spacing is about 0.34nm. It is a widely used electrode material, and due to the special physical and chemical properties of carbon nanotubes, they can also be assembled into fibers by solid-stat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/32H01G11/36H01G11/48H01G11/86
CPCH01G11/30H01G11/32H01G11/36H01G11/48H01G11/86Y02E60/13
Inventor 韩景泉王瑶李丽圭岳一莹梅长彤徐信武朱赛玲
Owner NANJING FORESTRY UNIV
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