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Argentum (Ag)/cobaltous sulfide (CoS) supercapacitor electrode material and preparation method thereof

A technology for supercapacitors, electrode materials, applied in hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, nanotechnology for materials and surface science, etc.

Active Publication Date: 2016-08-31
合肥九州龙腾科技成果转化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So far, no reports have been found on the preparation of Ag / CoS supercapacitor electrode materials by solvothermal and photoreduction methods. The CoS used has stable chemical and physical properties, cheap and easy-to-obtain raw materials, and is non-toxic, and Ag / CoS composite materials are prepared using it as a carrier. The reaction process is simple, the production process of the resulting product is green and environmentally friendly, and the capacitor has excellent properties

Method used

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  • Argentum (Ag)/cobaltous sulfide (CoS) supercapacitor electrode material and preparation method thereof
  • Argentum (Ag)/cobaltous sulfide (CoS) supercapacitor electrode material and preparation method thereof
  • Argentum (Ag)/cobaltous sulfide (CoS) supercapacitor electrode material and preparation method thereof

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Embodiment 1

[0025] Embodiment 1: Preparation of CoS nanosheets:

[0026] The synthesis of CoS nanosheets adopts the method of solvothermal reaction: weigh 0.8mmol of CoCl 2 ·H 2 0 and 1.6mmol of thiourea in a 100mL beaker, add 37mL of absolute ethanol, and magnetically stir for 30min to completely dissolve it, then add 3.75mL of ethylenediamine, stir for another 10min, then add the resulting solution to a 50mL liner for poly Put it into a reaction kettle of tetrafluoroethylene, put it into an oven, and conduct a solvothermal reaction at 180°C for 12 hours. After the reaction is completed and cool to room temperature, centrifuge out the precipitate and wash it with water and alcohol three times, put it in an oven, dry it, and grind it to obtain CoS nanosheets .

Embodiment 2

[0027] Embodiment 2: Preparation of 2%Ag / CoS composite nanomaterial:

[0028] The synthesis of 2% Ag / CoS composite nanomaterials adopts the photoreduction method: Weigh 0.1g of CoS powder into a 250mL beaker, add 100mL of distilled water, place it in an ultrasonic machine with a power of 100W for 30min, and then add 0.0032g of AgNO 3 And stir for 30min, wait for AgNO 3 After completely dissolving, place the beaker next to the 500W tungsten lamp light source, continuously stir and turn on the tungsten lamp light source, centrifuge the precipitate after 4 hours of light, wash with water and alcohol for 3 times each, put it in an oven, dry it, and grind it to get 2 %Ag / CoS composite.

Embodiment 3

[0029] Embodiment 3: Preparation of 1%Ag / CoS composite nanomaterial:

[0030] The synthesis of 1% Ag / CoS composite nanomaterials adopts the light reduction method: weigh 0.1g CoS powder in a 250mL beaker, add 100mL of distilled water, place it in an ultrasonic machine with a power of 100W for 30min, and then add 0.0016g AgNO 3 And stir for 30min, wait for AgNO 3 After completely dissolving, place the beaker next to the 500W tungsten lamp light source, continuously stir and turn on the tungsten lamp light source, centrifuge out the precipitate after 4 hours of light, wash with water and alcohol for 3 times, put it in an oven, dry it, and grind it to get 1 %Ag / CoS composite.

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Abstract

The invention belongs to the technical field of preparation of a supercapacitor material, and relates to a preparation method of an argentum (Ag) / cobaltous sulfide (CoS) nanometer sheet supercapacitor electrode material. CoS nanometer sheets are weighed and are dissolved in distilled water, ultrasonic dispersing is performed, then AgNO3 is added, after the AgNO3 is completely dissolved through magnetic stirring, a dispersion liquid is exposed under irradiation of a tungsten lamp, in situ load Ag nanometer particles on the surface of the CoS nanometer sheets are prepared by use of a photochemical reduction method, uninterrupted stirring is performed, an obtained product is washed by use of the distilled water and dehydrated alcohol, and an Ag / CoS composite nanometer material is obtained through centrifugation and drying. The Ag / CoS composite nanometer material, acetylene black and a polyvinylidene fluoride solution are stirred and mixed, a mixed liquid is taken and uniformly dropped into foamed nickel, pressing is performed after drying, an experiment capacitor is assembled, and by use of an electrochemical work station, a cyclic volt-ampere and constant-current charge and discharge test is carried out.

Description

Technical field: [0001] The invention belongs to the technical field of preparation of supercapacitor materials, and relates to a preparation method of a silver / cobalt sulfide nanosheet supercapacitor electrode material, in particular, a preparation process is simple, and has good capacitance performance and excellent constant current charge and discharge stability method for the preparation of composite materials. technical background [0002] Today, energy saving and environmental protection are increasingly becoming the mainstay. As a new type of energy storage device, supercapacitors have the characteristics and advantages of fast charging and discharging, no pollution to the environment, and long cycle life. They can replace traditional batteries in some fields and become new energy storage devices. It is a new type of green energy in the century, and its application has attracted more and more attention from all over the world. [0003] Cobalt sulfide (CoS) is a non-t...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/30H01G11/24B82Y30/00
CPCY02E60/13H01G11/86B82Y30/00H01G11/24H01G11/30
Inventor 陈敏徐箐姜德立王天勇邵乐强
Owner 合肥九州龙腾科技成果转化有限公司
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