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Metal selenide loaded on flexible cotton cloth ni x co 9-x -se electrode material and its preparation method and application

A nixco9-x-se, metal-loaded technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problem that the electrochemical activity of electrode materials is not ideal, and achieve easy industrial production, high energy density, shape-controllable effect

Active Publication Date: 2020-05-05
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It has been reported in the literature that electrode materials prepared from bimetallic nickel-cobalt selenide NiCoSe can provide 2.33F cm -2 The capacitance of other double metal selenide supercapacitors is also reported in related literature, such as Cu x Mo y Se z With excellent specific capacitance and stability (CN106783202A), three-dimensional porous Ni 0.85 Se / Co 9 Se 8 Nanocomposite materials also have good electrochemical properties (CN106057480A), and have great development potential in the field of supercapacitors, but the electrochemical activity of these electrode materials is still not ideal, and a new type of electrode material still needs to be developed to further improve the supercapacitor. Electrochemical performance of capacitors

Method used

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  • Metal selenide loaded on flexible cotton cloth ni <sub>x</sub> co <sub>9-x</sub> -se electrode material and its preparation method and application
  • Metal selenide loaded on flexible cotton cloth ni <sub>x</sub> co <sub>9-x</sub> -se electrode material and its preparation method and application
  • Metal selenide loaded on flexible cotton cloth ni <sub>x</sub> co <sub>9-x</sub> -se electrode material and its preparation method and application

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Experimental program
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Embodiment 1

[0036] A kind of flexible cotton cloth loading metal selenide Ni of the present embodiment 0 co 9 -Se supercapacitor electrode material is based on pure cotton cloth, and the substrate is degreased, sensitized, activated, electroless nickel plated, precursor prepared and selenized in sequence, such as figure 1 As shown, the method specifically includes the following steps:

[0037] (1) Degreasing: Under the condition of 35°C, put the base material into the degreasing solution and soak for 10 minutes, then wash with deionized water to obtain the degreasing base material, wherein the degreasing solution is Triton Aqueous solution, the concentration of Triton in the degreasing liquid is 2%.

[0038] (2) Sensitization: Under the condition of 35°C, put the degreased base material in step (1) into the sensitization solution for 10 minutes, and then wash it with deionized water to obtain the sensitized base material, wherein, The sensitizing solution is a mixed solution composed o...

Embodiment 2

[0049] A kind of flexible cotton cloth loading metal selenide Ni of the present embodiment 1.5 co 7.5 -Se supercapacitor electrode material, and the electrode material preparation method of embodiment 1 is basically the same, difference only is: the mixed solution described in step (5) is made of nickel chloride hexahydrate, cobalt chloride hexahydrate, urea, deionized water Composition, wherein: the consumption of nickel chloride hexahydrate is 1.5mmol, the consumption of cobalt chloride hexahydrate is 7.5mmol.

Embodiment 3

[0051] A kind of flexible cotton cloth loading metal selenide Ni of the present embodiment 3 co 6 -Se supercapacitor electrode material, is basically the same as the electrode material preparation method of embodiment 2, difference only is: the consumption of nickel chloride hexahydrate is 3mmol in the step (5), and the consumption of cobalt chloride hexahydrate is 6mmol.

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Abstract

The invention relates to a flexible cotton cloth-load bimetal selenide Ni<x>Co<9-x>Se supercapacitor electrode material and preparation method and application thereof. In the flexible cotton cloth-load bimetal selenide Ni<x>Co<9-x>Se supercapacitor electrode material, x is more than or equal to 0 but smaller than or equal to 9 in Ni<x>Co<9-x>Se and is preferably selected from 4.5, the electrode material is prepared by taking pure cotton cloth as a substrate and sequentially performing oil removal, sensitization, activation, chemical plating, precursor preparation and selenylation on the substrate. When the Ni<x>Co<9-x>Se electrode material prepared by the invention is applied to a supercapacitor, a test result shows that the electrode material shows high-efficiency faradaic pseudocapacitance and specific capacitance, particularly the electrode material prepared under a condition of a proportion of nickel and cobalt being 1:1 is more excellent in electrochemical performance, and the specific capacitance of the electrode material can reach 8.85F cm<-2> under a condition of current density being 2mA cm<-2>.

Description

technical field [0001] The invention relates to the technical field of supercapacitor electrode material preparation, more specifically, the invention relates to a flexible cotton cloth loaded metal selenide Ni x co 9-x -Se supercapacitor electrode material and its preparation method and application. Background technique [0002] With the rapid development of the new generation of flexible electronics industry, such as wearable portable electronic devices, implantable medical products, conformal health sensors, etc., the power supply equipment needs better mechanical flexibility, and at the same time can provide high energy and high power and long life. Carbon cloth is widely used in flexible electronic devices. It has the advantages of high temperature resistance, corrosion resistance, electrical conductivity, heat transfer and small thermal expansion coefficient, but at the same time, carbon cloth has the disadvantages of poor mechanical properties, complex stress calcul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01G11/86
CPCH01G11/30H01G11/86Y02E60/13
Inventor 王浩王聪万厚钊张军
Owner HUBEI UNIV