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Porous nano material used for supercapacitor and with NiCo2O4@MnMoO4 core-shell structure and preparation method thereof

A technology of supercapacitors and core-shell structures, applied in nanotechnology for materials and surface science, hybrid/electric double layer capacitor manufacturing, hybrid capacitor electrodes, etc., can solve the limitations and fail to reach the high energy density of supercapacitors, etc. problem, achieve high specific capacitance, realize large-scale industrial production, and increase the effect of contact

Inactive Publication Date: 2016-12-14
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research and development of pseudocapacitor electrode materials are mainly transition metal oxides, but the specific capacitance of a single transition metal oxide is greatly limited, and it cannot meet the high energy density requirements of supercapacitors.

Method used

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  • Porous nano material used for supercapacitor and with NiCo2O4@MnMoO4 core-shell structure and preparation method thereof
  • Porous nano material used for supercapacitor and with NiCo2O4@MnMoO4 core-shell structure and preparation method thereof
  • Porous nano material used for supercapacitor and with NiCo2O4@MnMoO4 core-shell structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Weigh Ni(NO) with a molar ratio of 5:2.5:9:2 3 ) 2 , Co(NO 3 ) 2 , CO(NH 2 ) 2 , CTAB (Hexadecyltrimethylammonium Bromide) raw material, dissolve in deionized water, stir evenly at room temperature, configure into a transparent and uniform precursor solution, transfer the configured precursor solution to a PTFE-lined reaction kettle, and foam it with foam. Nickel was used as the substrate. The substrate was immersed in the solution in the reactor, and then placed in an oven for hydrothermal reaction at 110 °C for 6 h. After the reaction, the substrate was taken out, washed and dried, and placed in a tube furnace at 300 °C. Annealed at ℃ for 3h to obtain NiCo 2 O 4 Nanowires.

[0026] 2) Weigh NaMoO with a molar ratio of 1:1 4 , MnCl 2 ∙4H 2 O raw material, dissolve in deionized water, stir evenly until all dissolved, then transfer the solution to a teflon-lined reaction kettle, put the NiCo 2 O 4 The nickel foam of the nanowires was immersed in the soluti...

Embodiment 2

[0028] 1) Weigh Ni(NO) with a molar ratio of 5:2.5:9:2 3 ) 2 , Co(NO 3 ) 2 , CO(NH 2 ) 2 , CTAB raw material, dissolve in deionized water, stir evenly at room temperature, configure into a transparent and homogeneous precursor solution, transfer the configured precursor solution to a polytetrafluoroethylene-lined reaction kettle, and use foam nickel as the substrate , the substrate was immersed in the solution in the reactor, and then placed in an oven for hydrothermal reaction at 120 °C for 7 hours. After the reaction, the substrate was taken out, washed and dried, and then placed in a tube furnace for annealing at 300 °C for 3 hours. , get NiCo 2 O 4 Nanowires

[0029] 2) Weigh NaMoO with a molar ratio of 1:1 4 , MnCl 2 ∙4H 2 O raw material, dissolve in deionized water, stir evenly until all dissolved, then transfer the solution to a teflon-lined reaction kettle, put the NiCo 2 O 4 The nickel foam of the nanowires was immersed in the solution, and then placed in ...

Embodiment 3

[0031] 1) Weigh Ni(NO) with a molar ratio of 5:2.5:9:2 3 ) 2 , Co(NO 3 ) 2 , CO(NH 2 ) 2 , CTAB raw material, dissolve in deionized water, stir evenly at room temperature, configure into a transparent and homogeneous precursor solution, transfer the configured precursor solution to a polytetrafluoroethylene-lined reaction kettle, and use foam nickel as the substrate , the substrate was immersed in the solution in the reaction kettle, and then placed in an oven for hydrothermal reaction at 130 °C for 9 hours. After the reaction, the substrate was taken out, washed and dried, and placed in a tube furnace for annealing at 300 °C for 3 hours. , get NiCo 2 O 4 Nanowires.

[0032] 2) Weigh NaMoO with a molar ratio of 1:1 4 , MnCl 2 ∙4H 2 O was dissolved in deionized water, stirred until it was completely dissolved, and then the solution was transferred to a polytetrafluoroethylene-lined reaction kettle, and the NiCo obtained in step 1) was 2 O 4 The nickel foam of the na...

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Abstract

The invention discloses a porous nano material used for a supercapacitor and with a NiCo2O4@MnMoO4 core-shell structure and a preparation method thereof. The porous nano material with the NiCo2O4@MnMoO4 core-shell structure comprises a core portion and an outer-layer protrusion portion which form a multilevel structure, a core is NiCo2O4 nanowires, and the core nanowires tightly grow on the surface of a substrate in a three-dimensional array mode. The outer-layer protrusion portion is MnMoO4 nano sheets which densely attach to the core NiCo2O4 nanowires and are crisscrossed to form the porous structure. The porous nano material with the NiCo2O4@MnMoO4 core-shell structure is prepared by adopting a two-step hydro-thermal synthesis reaction method, the process is simple and easy to operate, and large-scale industrialized production can be achieved. The porous nano material with the NiCo2O4@MnMoO4 core-shell structure and prepared by adopting the method has very high specific capacitance, also has better power multiplying properties and cycle stability and good electrochemical stability, is an excellent supercapacitor electrode material and can be used for high-energy-density supercapacitor products.

Description

technical field [0001] The invention relates to the field of supercapacitor electrode materials, in particular to a binary metal oxide composite electrode material for supercapacitors and a preparation method thereof. Background technique [0002] With the rapid development of the global economy, the continuous consumption of fossil energy such as oil and natural gas, and the increasing environmental pollution, the sustainable development of economy and society has been seriously affected. To this end, people are actively looking for and developing various clean energy sources, such as solar energy, wind energy, tidal energy, nuclear energy, and biological energy. In the energy field, efficient, low-cost, long-life, and environmentally friendly energy storage systems are very important. Among them, supercapacitor is a new type of energy storage device with performance between traditional capacitors and secondary batteries. It has the following advantages: high power density...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/46H01G11/24H01G11/26B82Y30/00
CPCY02E60/13H01G11/86B82Y30/00H01G11/24H01G11/26H01G11/46
Inventor 吕建国袁禹亮
Owner ZHEJIANG UNIV
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