NiSe porous nanosphere material used for super capacitor and preparation method thereof

A technology of supercapacitors and nanospheres, applied in the manufacture of hybrid/electric double-layer capacitors, electrodes of hybrid capacitors, etc., can solve the problems of less research and application of supercapacitors, and achieve favorable migration and diffusion, high specific capacitance and conductivity. , the effect of high electrochemical performance

Inactive Publication Date: 2016-11-23
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 porous nanosphere material used for super capacitor and preparation method thereof
  • NiSe porous nanosphere material used for super capacitor and preparation method thereof
  • NiSe porous nanosphere material used for super capacitor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Dissolve the raw materials 1mmol nickel acetate tetrahydrate and 1mmol sodium selenite in 20mL deionized water, stir evenly at room temperature and place in a reaction kettle, then add a mixture of concentrated ammonia water and diethylenetriamine (5mL concentrated ammonia water, 15mL diethylenetriamine), then immerse the substrate into the solution in the reactor, and then place the reactor in an oven for hydrothermal synthesis reaction, the reaction temperature is 180 ° C, the reaction time is 14 hours, and cooled to room temperature , washed and dried to obtain the final product NiSe porous nanosphere material.

Embodiment 2

[0031] Dissolve the raw materials 1mmol nickel acetate tetrahydrate and 1mmol sodium selenite in 20mL deionized water, stir evenly at room temperature and place in a reaction kettle, then add a mixture of concentrated ammonia water and diethylenetriamine (5mL concentrated ammonia water, 15mL diethylenetriamine), then immerse the substrate into the solution in the reactor, and then place the reactor in an oven for hydrothermal synthesis reaction, the reaction temperature is 180°C, the reaction time is 8 hours, and cooled to room temperature , washed and dried to obtain the final product NiSe porous nanosphere material.

Embodiment 3

[0033] Dissolve the raw materials 1mmol nickel acetate tetrahydrate and 1mmol sodium selenite in 20mL deionized water, stir evenly at room temperature and place in a reaction kettle, then add a mixture of concentrated ammonia water and diethylenetriamine (5mL concentrated ammonia water, 15mL diethylenetriamine ethylenetriamine), then immerse the substrate into the solution in the reactor, and then place the reactor in an oven for hydrothermal synthesis reaction, the reaction temperature is 180 ° C, the reaction time is 10 hours, cooled to room temperature, washed Dry to obtain the final product NiSe porous nanosphere material.

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Abstract

The invention discloses a NiSe porous nanosphere material used as a super capacitor electrode material and a preparation method thereof. A pore structure is formed on the surface of a nanosphere through staggering curved nano walls; wrinkles consisting of thin nano sheets are also further formed on each of the nano walls. The NiSe porous nanosphere material is synthesized by adopting a one-step solvent thermal method and is simple and energy-saving to prepare and suitable for industrial production. The synthesized NiSe nano material is tested under a three-electrode system, and the high specific capacity of 0.961 F cm<-1> is shown under the current density of 1 mA cm<-1>. The NiSe nano electrode material prepared by the invention has the advantages that the specific capacitance is high, the preparation method is simple to operate, green and environment-friendly, and the cost is low, and is favorable for industrialization.

Description

technical field [0001] The invention relates to the field of supercapacitor electrode materials, in particular to a selenide 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 of energy storage device, its performanc...

Claims

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Application Information

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