A preparation method of AgNWs @ NiCo (OH) 2 flexible transparent supercapacitor positive electrode

A supercapacitor, transparent technology

Pending Publication Date: 2018-12-21
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the limited storage of In, the fragility of ITO, and the high cost of vapor phase sputtering used to construct ITO thin films greatly limit the application of ITO in flexible optoelectronic devices.
There is a large interlayer resistance between the multilayer graphene sheets, and there is a grain boundary resistance in the sheet, which makes it difficult to apply to conductive films; single-layer graphene can reduce the interlayer resistance to a certain extent, but the preparation of large single-layer graphite The high cost and complicated process of olefin also hinder its large-scale application
The preparation cost of single-walled carbon nanotubes is high and the material processing steps are complicated, while the conductivity of multi-walled carbon nanotubes is poor, making it difficult for carbon nanotube materials to be used in flexible current collectors on a large scale.
Conductive polymers usually only have good conductivity in acidic electrolytes, and their stability is poor, so they are not suitable for supercapacitors in alkaline environments, which limits their use in complex conditions and their service life is short

Method used

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  • A preparation method of AgNWs @ NiCo (OH) 2 flexible transparent supercapacitor positive electrode
  • A preparation method of AgNWs @ NiCo (OH) 2 flexible transparent supercapacitor positive electrode
  • A preparation method of AgNWs @ NiCo (OH) 2 flexible transparent supercapacitor positive electrode

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Embodiment 1

[0042] A kind of AgNWs@NiCo(OH) 2 A method for preparing a flexible transparent supercapacitor positive electrode, comprising the following steps:

[0043] S1), on the polyethylene terephthalate (PET) substrate, use a glass rod spin coating to cover a layer of silver nanowire conductive network film, and then another clean polyethylene terephthalate (PET ) The substrate is covered on the silver nanowire conductive network film, and the pressure of 10-30MPa is maintained for 1-30min by using a tablet press to make the metal nanowires more closely connected;

[0044] S2), the preparation of electroplating solution, the cobalt acetate tetrahydrate of 0.01-1mol / L, the nickel acetate tetrahydrate of 0.01-1mol / L, and the ammonium acetate of 0.01-1mol / L are mixed, and magnetic stirring 10-60min, wherein , the molar mass ratio of nickel source to cobalt source is 1:0-0:1;

[0045] S3), using the CHI760E electrochemical workstation, electroplating in a three-stage system, using the m...

Embodiment 2

[0047] A kind of AgNWs@NiCo(OH) 2 A method for preparing a flexible transparent supercapacitor positive electrode, comprising the following steps:

[0048] S1), on the polyethylene terephthalate (PET) substrate, use a glass rod spin coating to cover a layer of silver nanowire conductive network film, and then another clean polyethylene terephthalate (PET ) The substrate is covered on the silver nanowire conductive network film, and the pressure of 10-30MPa is maintained for 1-30min by using a tablet press to make the metal nanowires more closely connected;

[0049] S2), the preparation of electroplating solution, the cobalt acetate tetrahydrate of 0.05mol / L, the nickel acetate tetrahydrate of 0.06mol / L, and the ammonium acetate of 0.05mol / L are mixed, and magnetic stirring 10-60min, wherein, nickel source The molar mass ratio to the cobalt source is 5:6;

[0050] S3), using the CHI760E electrochemical workstation, electroplating in a three-stage system, using the metal nano-...

Embodiment 3

[0052] A kind of AgNWs@NiCo(OH) 2 A method for preparing a flexible transparent supercapacitor positive electrode, comprising the following steps:

[0053] S1), on the polyethylene terephthalate (PET) substrate, use a glass rod spin coating to cover a layer of silver nanowire conductive network film, and then another clean polyethylene terephthalate (PET ) The substrate is covered on the silver nanowire conductive network film, and the pressure of 10-30MPa is maintained for 1-30min by using a tablet press to make the metal nanowires more closely connected;

[0054] S2), the preparation of electroplating solution, the cobalt acetate tetrahydrate of 0.8mol / L, the nickel acetate tetrahydrate of 0.8mol / L, and the ammonium acetate of 0.5mol / L are mixed, and magnetic stirring 10-60min, wherein, nickel source The molar mass ratio with the cobalt source is 1:1;

[0055] S3), using the CHI760E electrochemical workstation, electroplating in a three-stage system, using the metal nano-f...

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Abstract

The invention relates to the technical field of supercapacitors, in particular to a preparation method of AgNWs @ NiCo (OH) 2 flexible transparent supercapacitor positive electrode, wherein the invention has excellent electron transfer efficiency and ion diffusion efficiency by loading a layer of polycrystalline nickel cobalt hydroxide on the surface of the silver nanowire conductive network through an electrochemical deposition method; Silver nanowires can be used as a fast electron transport channel to improve the charge transfer efficiency between the electrode active material and current collector so that the whole electrode has good conductivity. By means of electrochemical deposition, the active material can uniformly coats the surface of silver nanowires in a certain orientation toform a protective layer on the silver nanowires, thereby improving the electrochemical stability of the silver nanowires, while still maintaining the good mechanical properties of the whole electrodematerial; The silver nanowire/nickel cobalt hydroxide core-shell structure nanocomposite prepared by the invention avoids the problems of conductive agent and binder needed in the traditional supercapacitor.

Description

technical field [0001] The invention relates to the technical field of a supercapacitor, in particular to an AgNWs@NiCo(OH) 2 Preparation method of flexible transparent supercapacitor positive electrode. Background technique [0002] At present, energy storage devices have attracted much attention due to their broad application prospects in the fields of energy efficient utilization and portable electronic products. With the miniaturization of consumer electronics and the concept of wearable and foldable flexible electronics, it is urgent to develop light, thin and flexible energy storage devices that can provide energy for them. Among them, supercapacitors (also called electrochemical capacitors) have received widespread attention. [0003] A supercapacitor is a new type of energy storage element between conventional capacitors and secondary batteries. It has dual functions between capacitor and battery, its power density is much higher than that of ordinary batteries, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/24H01G11/86
CPCH01G11/24H01G11/30H01G11/86Y02E60/13
Inventor 何鑫刘均炎杨为家沈耿哲江嘉怡赵思柔
Owner WUYI UNIV
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