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Preparation of copper cobalt oxide composite electrode material by solvothermal method and application thereof

A technology of composite electrode and solvothermal method, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of different extraction processes and difficulty in obtaining sodium lignosulfonate, etc., and achieve a simple preparation process route, The operating conditions are easy to control and the effect of high synthesis efficiency

Inactive Publication Date: 2018-12-28
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Molecular weight and functional group are important factors affecting its dispersibility. Since it is extracted from natural products and the extraction process is different, it is difficult to obtain a completely average sodium lignosulfonate

Method used

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  • Preparation of copper cobalt oxide composite electrode material by solvothermal method and application thereof
  • Preparation of copper cobalt oxide composite electrode material by solvothermal method and application thereof
  • Preparation of copper cobalt oxide composite electrode material by solvothermal method and application thereof

Examples

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Effect test

Embodiment 1

[0039] A method for preparing copper cobaltate composite electrode material by solvothermal method includes the following steps:

[0040] Weigh 2 mmol copper nitrate trihydrate, 4 mmol cobalt nitrate hexahydrate, and 6 mmol urea into a beaker, then add 70 mL of deionized water, magnetically stir to make it uniformly dissolved, and then transfer the mixed solution into the PTFE In the reactor lining, put the reactor in an oven and react for 5h at 130℃, then wash it, bake it in a constant temperature oven at 60℃ for 12h, and then in a muffle furnace at a temperature of 400℃ at a rate of 5℃ / min Calcination for 2h to obtain the precursor copper cobaltate (CuCo 2 O 4 ). Its FTIR such as figure 1 As shown in a, the XRD pattern is as figure 2 As shown in a, the XRD curve conforms to the XRD standard card of copper cobaltate (JCPDS NO.78-2177), indicating that copper cobaltate was successfully prepared; the SEM image is as follows image 3 As shown in middle a, the appearance is spheri...

Embodiment 2

[0042] A method for preparing copper cobaltate composite electrode material by solvothermal method includes the following steps:

[0043] Weigh 2 mmol copper nitrate trihydrate, 4 mmol cobalt nitrate hexahydrate, 6 mmol urea, and 0.2 g sodium lignosulfonate into a beaker, then add 70 mL deionized water, magnetically stir to make it uniformly dissolved, and then mix The solution was transferred to a reaction kettle lined with polytetrafluoroethylene. The reaction kettle was put into an oven and reacted at 130°C for 5 hours, then washed, dried in a 60°C constant temperature oven for 12 hours, and then in a muffle furnace at 5°C / The heating rate of min is calcined at 400℃ for 2h to obtain copper cobaltate composite material. Its FTIR such as figure 1 As shown in b, the XRD pattern is as figure 2 As shown in b, it can be seen from the figure that the copper cobaltate modified with sodium lignosulfonate has more functional groups; the XRD curve conforms to the XRD standard card of c...

Embodiment 3

[0045] A method for preparing copper cobaltate composite electrode material by solvothermal method includes the following steps:

[0046] Weigh 1 mmol of copper chloride dihydrate, 2 mmol of cobalt chloride hexahydrate, and 3 mmol of urea into a beaker, then add 50 mL of deionized water, magnetically stir to make it uniformly dissolved, and then transfer the mixed solution to PTFE In a reaction kettle lined with ethylene, put the reaction kettle in an oven at 150°C for 4 hours, then wash it, bake it in a 50°C constant temperature oven for 16 hours, and then in a muffle furnace at a temperature rise of 5°C / min at 450 Calcined at ℃ for 2h to obtain the precursor copper cobaltate (CuCo 2 O 4 ). Its FTIR such as figure 1 As shown in a, the XRD pattern is as figure 2 As shown in a, the XRD curve conforms to the XRD standard card of copper cobaltate (JCPDS NO.78-2177), indicating that copper cobaltate was successfully prepared; the SEM image is as follows image 3 As shown in c, the ...

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Abstract

The invention belongs to the technical field of nanometer material preparation, and relates to a preparation of copper cobalt oxide composite electrode material by a solvothermal method and application thereof. The method comprises the steps of: using urea as precipitant, and copper salt, cobalt salt, sodium lignosulfonate as raw material, wherein the above copper salt, cobalt salt, sodium lignosulfonate and deionized water or absolute ethanol have a volume ratio of 1-4 mmol: 2-9 mmol: 2-12 mmol: 0-0.4 g: 50-85 mL; performing thermoprecipitation via a solvent; adjusting the content of a precipitator and the copper salt, cobalt salt, sodium lignosulfonate and other variable; performing calcinating, drying and calcinating to obtiain the copper cobalt oxide composite electrode material. The method of the invention has the advantages of low cost, simple operation, uniform particle distribution of the prepared product, high particle performance, relatively stable dispersion system, good particle size dispersion and good morphology. The prepared copper cobalt oxide nanocomposite electrode material is fixed on the nickel foam substrate by binder and applied to the supercapacitor, which has excellent electrochemical performance and is suitable for industrial production.

Description

Technical field [0001] The invention belongs to the technical field of nano material preparation, and relates to the synthesis of composite electrode materials, in particular to a method for preparing copper cobaltate composite electrode materials by solvothermal method and its application. Background technique [0002] Energy is indispensable for mankind, and it is the foundation of all human activities. Without energy, all activities on the earth will stagnate. In other words, the development of new energy and energy technology is one of the driving forces that promote the progress of human society. However, as human society enters the industrial age, the economic take-off has brought a series of problems, such as lack of energy, environmental pollution, ecological deterioration, etc. The most important of which is the energy problem. According to expert predictions, according to the current consumption situation, fossil energy can only be used by humans for about 100 years at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/46H01G11/86
CPCH01G11/30H01G11/46H01G11/86Y02E60/13
Inventor 高海文王晓红郝臣周赛赛黄成相江成龙
Owner JIANGSU UNIV
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