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Chain bead-shaped Cu2O-Mn3O4/NiO composite material and preparation method thereof

A cu2o-mn3o4, composite material technology, applied in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, etc., to achieve the effect of improving stability, large capacitance, and simplifying the synthesis process

Active Publication Date: 2020-02-18
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no metal oxide CuO x , Mn x o y Composites combined with NiO as electrode materials for supercapacitors reported

Method used

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  • Chain bead-shaped Cu2O-Mn3O4/NiO composite material and preparation method thereof
  • Chain bead-shaped Cu2O-Mn3O4/NiO composite material and preparation method thereof
  • Chain bead-shaped Cu2O-Mn3O4/NiO composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] a Cu 2 O-Mn 3 o 4 The preparation method of / NiO composite material, comprises the following steps:

[0028] (1) Weigh 2.007g of polyvinylpyrrolidone and dissolve it in a solvent of 12.003g of N,N-dimethylformamide, and stir to obtain solution A;

[0029] (2) Weigh 1.013g nickel nitrate hexahydrate and pour it into solution A, stir at room temperature for 1h to obtain mixed solution B;

[0030] (3) Weigh 0.502g manganese acetate and pour it into solution B, and stir at room temperature for 0.5h to obtain mixed solution C;

[0031] (4) Weigh 0.504g of copper acetate and pour it into solution C, and stir at room temperature for 0.5h to obtain mixed solution D;

[0032] (5) Place the mixed solution D in the syringe, and perform electrospinning at a voltage of 17kV, a flow rate of 0.2mL / h and a height of 15cm to prepare Cu-Mn / PVP nanofibers;

[0033] (6) Place the nanofibers obtained in step (5) in a porcelain boat, gradually heat from room temperature to 500°C under ai...

Embodiment 2

[0064] a Cu 2 O-Mn 3 o 4 The preparation method of / NiO composite material, comprises the following steps:

[0065] (1) Weigh 2.002g of polyvinylpyrrolidone and dissolve it in a solvent of 12.003g of N,N-dimethylformamide, and stir to obtain solution A;

[0066] (2) Weigh 2.003g nickel nitrate hexahydrate and pour it into solution A, stir at room temperature for 1h to obtain mixed solution B;

[0067] (3) Weigh 1.002g manganese acetate and pour it into solution B, and stir at room temperature for 0.5h to obtain mixed solution C;

[0068] (4) Weigh 1.005g of copper acetate and pour it into solution C, and stir at room temperature for 0.5h to obtain mixed solution D;

[0069] (5) Place the mixed solution D in the syringe, and perform electrospinning at a voltage of 15kV, a flow rate of 0.3mL / h and a height of 15cm to prepare Cu-Mn / PVP nanofibers;

[0070] (6) Place the nanofibers obtained in step (5) in a porcelain boat, gradually heat from room temperature to 500°C under ai...

Embodiment 3

[0072] a Cu 2 O-Mn 3 o 4 The preparation method of / NiO composite material, comprises the following steps:

[0073] (1) Weigh 2.002g of polyvinylpyrrolidone and dissolve it in a solvent of 12.003g of N,N-dimethylformamide, and stir to obtain solution A;

[0074] (2) Weigh 1.503g of nickel nitrate hexahydrate and pour it into solution A, stir at room temperature for 1h to obtain mixed solution B;

[0075] (3) Weigh 0.752g manganese acetate and pour it into solution B, and stir at room temperature for 0.5h to obtain mixed solution C;

[0076] (4) Weigh 0.751g of copper acetate and pour it into solution C, and stir at room temperature for 0.5h to obtain mixed solution D;

[0077] (5) Place the mixed solution D in the syringe, and perform electrospinning at a voltage of 17kV, a flow rate of 0.2mL / h and a height of 18cm to prepare Cu-Mn / PVP nanofibers;

[0078] (6) Place the nanofibers obtained in step (5) in a porcelain boat, gradually heat from room temperature to 500°C under...

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Abstract

The invention discloses a chain bead-shaped Cu2O-Mn3O4 / NiO composite material. The composite material is mainly prepared by using an electrospinning method and synthesized by a carbonization process.In the material, Cu ions and Mn ions have a mass fraction of 5wt% to 15wt%. The method comprises: firstly dissolving polyacrylonitrile in DMF and uniformly stirring the mixture to form a solution; then, adding nickel salt, manganese salt and copper salt to the solution prepared in the previous step successively, uniformly stirring the mixed solution, transferring the mixed solution into a syringeand performing electrostatic spinning under certain conditions; finally, calcining a composite nanofiber mat obtained by electrostatic spinning in a muffle furnace. The composite material has a good fiber structure, is an electrode material with large capacitance, a long life, and low pollution, is likely to transfer electrons / ions and can improve the stability of a supercapacitor. The method optimizes the process reaction conditions, greatly simplifies the synthetic process, and reduces costs.

Description

technical field [0001] The invention relates to the technical field of material synthesis, in particular to a chain bead-shaped Cu 2 O-Mn 3 o 4 / NiO composite material and its preparation method. Background technique [0002] With the development of new energy storage devices, electrochemical energy storage devices (EESDs) combining high energy and high power density have become a research hotspot. Among them, supercapacitors (SCs) have partially replaced the existing rechargeable batteries due to their fast charging and discharging, high specific capacitance, safety and environmental protection, and have been used in mobile electronics and electric vehicles. Supercapacitors are considered to be the most suitable energy systems for bridging the gap between low-energy-density capacitors and low-power-density lithium-ion batteries. In 1975, Conway found that transition metal oxides are very promising pseudocapacitive electrode materials, but RuO 2 Although metalloid oxide...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/46H01G11/86
CPCH01G11/24H01G11/46H01G11/86Y02E60/13
Inventor 张春勇苏蕾李雯刘海涛赵渝越黄琳娜李健宁秦恒飞舒莉程洁红朱炳龙程庆霖
Owner JIANGSU UNIV OF TECH
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