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NiSe-Ni3Se2 porous nanosphere material used for supercapacitor and preparation method for material

A technology of supercapacitors and nanospheres, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of less research and application of supercapacitors, and achieve a low-cost, short-process suitable for large-scale production Effect

Inactive Publication Date: 2016-11-23
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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  • NiSe-Ni3Se2 porous nanosphere material used for supercapacitor and preparation method for material
  • NiSe-Ni3Se2 porous nanosphere material used for supercapacitor and preparation method for material
  • NiSe-Ni3Se2 porous nanosphere material used for supercapacitor and preparation method for material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (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.

[0036] (2) Weigh 1mmol of nickel nitrate hexahydrate and 1mmol of selenium dioxide as raw materials and dissolve them in 40mL of water, and stir for 30min to obtain a precursor solution.

[0037] (3) Pour the above precursor 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 2 hours, After cooling the reactor to room temperature, collect foamed nickel, wash with ethanol and deionized water respectively, and dry to obtain NiSe-Ni based on foamed nickel. 3 Se 2 Porous nanosphere supercapacitor materials.

Embodiment 2

[0039] (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.

[0040] (2) Weigh 1mmol of nickel nitrate hexahydrate and 1mmol of selenium dioxide as raw materials and dissolve them in 40mL of water, and stir for 30min to obtain a precursor solution.

[0041] (3) Pour the above precursor 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 4 hours, After cooling the reactor to room temperature, collect foamed nickel, wash with ethanol and deionized water respectively, and dry to obtain NiSe-Ni based on foamed nickel. 3 Se 2 Porous nanosphere supercapacitor materials.

Embodiment 3

[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 1mmol of nickel nitrate hexahydrate and 1mmol of selenium dioxide as raw materials and dissolve them in 40mL of water, and stir for 30min to obtain a precursor solution.

[0045] (3) Pour the above precursor solution into a polytetrafluoroethylene hydrothermal reaction kettle, place the nickel foam treated in (1) in it, put the reaction kettle into a drying oven, and react at 160°C for 6 hours, and then Cool the reactor to room temperature, collect foamed nickel, wash with ethanol and deionized water respectively, and dry to obtain NiSe-Ni based on foamed nickel 3 Se 2 Porous nanosphere supercapacitor materials.

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Abstract

The invention discloses an NiSe-Ni3Se2 porous nanosphere material used for a supercapacitor and a preparation method for the material. The preparation method comprises the steps of pre-treating porous foam nickel and taking the pre-treated porous foam nickel as a current collector of an electrode; mixing and stirring selenium dioxide, nickel nitrate hexahydrate and water to obtain a precursor solution; and putting the treated foam nickel into the precursor solution, and performing a hydrothermal reaction to obtain an NiSe / Ni3Se2 nanosphere, and forming a porous structure, wherein the surface of the nanosphere consists of criss-cross nanowalls. The preparation method is simple in operation, environmentally-friendly, low in cost and suitable for large-scale production; and the prepared supercapacitor electrode material has relatively high specific capacitance and good electrochemical stability.

Description

technical field [0001] The present invention relates to the field of supercapacitor electrode materials, in particular to a kind of NiSe-Ni for supercapacitor 3 Se 2 Porous nanosphere material and its preparation method. 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 of energy stora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/36H01G11/26
CPCY02E60/13H01G11/86H01G11/26H01G11/36
Inventor 吕建国杨杰
Owner ZHEJIANG UNIV
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