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Ni(OH)2/NiSe nanometer rod material used for super capacitor and preparation method thereof

A technology of supercapacitors and nanorods, applied in nanotechnology for materials and surface science, hybrid/electric double layer capacitor manufacturing, hybrid capacitor electrodes, etc., can solve the problem of less research and application of supercapacitors, and achieve superior circulation Effects of stability, increased contact, high electrochemical performance

Inactive Publication Date: 2016-10-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Transition metal selenides have been applied in catalysis, photolysis of water, and fuel-sensitized solar cells, but there are very few researches and applications in supercapacitors.

Method used

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  • Ni(OH)2/NiSe nanometer rod material used for super capacitor and preparation method thereof
  • Ni(OH)2/NiSe nanometer rod material used for super capacitor and preparation method thereof
  • Ni(OH)2/NiSe nanometer rod material used for super capacitor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] (1) Cut the nickel foam into a size of 4cm×2cm and put it in a 3 mol L -1 In the hydrochloric acid solution, ultrasonically react for 30 minutes to remove the NiO layer on the surface, and wash the treated nickel foam with deionized water and ethanol until neutral.

[0038] (2) Weigh 4mmol of nickel chloride hexahydrate and 4mmol of sodium hydroxide as raw materials and dissolve them in 40mL of water, and stir for 30min to obtain a precursor solution.

[0039] (3) Pour the above mixed solution into a polytetrafluoroethylene hydrothermal reaction kettle, place the nickel foam treated in step (1) in it, put the reaction kettle into a drying oven, and react at 180°C for 12h, then Cool the reactor to room temperature, collect the nickel foam, rinse with ethanol and deionized water, and dry.

[0040] (4) Weigh 1mmol of selenium powder and 2mmol of sodium borohydride as raw materials and dissolve them in 40mL of water, stir at room temperature for 10min, make a clear aqueous...

Embodiment 2

[0043] (1) Cut the nickel foam into a size of 4cm×2cm, and put it in a 3 mol L -1 In the hydrochloric acid solution, ultrasonically react for 30 minutes to remove the NiO layer on the surface, and wash the treated nickel foam with deionized water and ethanol until neutral.

[0044] (2) Weigh 4mmol of nickel chloride hexahydrate and 4mmol of sodium hydroxide as raw materials and dissolve them in 40mL of water, and stir for 30min to obtain the precursor solution.

[0045] (3) Pour the above mixed solution into a polytetrafluoroethylene hydrothermal reaction kettle, place the nickel foam treated in step (1) in it, put the reaction kettle into a drying oven, and react at 160°C for 12h, then Cool the reactor to room temperature, collect the nickel foam, rinse with ethanol and deionized water, and dry.

[0046] (4) Weigh 1mmol of selenium powder and 2mmol of sodium borohydride as raw materials and dissolve them in 40mL of water, stir at room temperature for 10min to prepare a clear...

Embodiment 3

[0049] (1) Cut the nickel foam into a size of 4cm×2cm, and put it in a 3 mol L -1 In the hydrochloric acid solution, ultrasonically react for 30 minutes to remove the NiO layer on the surface, and wash the treated nickel foam with deionized water and ethanol until neutral.

[0050] (2) Weigh 4mmol of nickel chloride hexahydrate and 4mmol of sodium hydroxide as raw materials and dissolve them in 40mL of water, and stir for 30min to obtain the precursor solution.

[0051] (3) Pour the above mixed solution into a polytetrafluoroethylene hydrothermal reaction kettle, place the nickel foam treated by (1) in it, put the reaction kettle into a drying oven, react at 200°C for 12h, and then cool The reaction kettle was brought to room temperature, and nickel foam was collected, rinsed with ethanol and deionized water, and dried.

[0052] (4) Weigh 1mmol of selenium powder and 2mmol of sodium borohydride as raw materials and dissolve them in 40mL of water, stir at room temperature for ...

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Abstract

The invention discloses an Ni(OH)2 / NiSe nanometer rod material used for a super capacitor and a preparation method thereof. The preparation method comprises the following steps of carrying out preprocessing on foamed nickel and taking the foamed nickel as a current collector of an electrode; growing a precursor nanometer rod on a foamed nickel substrate; and then carrying out selenylation on a precursor so as to acquire an Ni(OH)2 / NiSe nanometer rod. Operation of the preparation method is simple, complex equipment is not needed and cost is low. Distribution of the prepared Ni(OH)2 / NiSe nanometer rods is uniform and nanometer rod surfaces form a porous structure. A test is performed under a three-electrode system. The material can reach a 1763.68Fg<1> high specific capacity under a 1Ag<1> current density and an internal resistance of the material can be 0.5omega. Simultaneously, a good rate capability and excellent electrochemical stability are possessed. The material is the excellent super capacitor electrode material.

Description

technical field [0001] The invention relates to the field of supercapacitor electrode materials, in particular to a transition metal hydroxide and selenide 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 and the aggravation of environmental pollution, a series of worldwide problems of sustainable economic and social development in the future have attracted more and more attention from all countries in the world. In this context, people are actively looking for and developing various new clean energy sources, such as solar energy, wind energy, tidal energy, nuclear energy, biological energy, and so on. In the field of energy, it has become more and more important to develop a high-efficiency, low-cost, long-life, and environmentally friendly energy conversion and storage system. Among them, supercapacitor is a new type...

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 吕建国杨杰
Owner ZHEJIANG UNIV
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