NiSe-Ni3Se2 three-dimensional pine needle shaped nano material for supercapacitor and preparation method thereof

A technology of supercapacitors and nanomaterials, applied in the direction of 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 excellent cycle Stability, good charge transfer, high conductivity effect

Inactive Publication Date: 2016-11-09
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 three-dimensional pine needle shaped nano material for supercapacitor and preparation method thereof
  • NiSe-Ni3Se2 three-dimensional pine needle shaped nano material for supercapacitor and preparation method thereof
  • NiSe-Ni3Se2 three-dimensional pine needle shaped nano material for supercapacitor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Dissolve the raw materials 1mmol nickel acetate tetrahydrate and 1mmol sodium selenite in 5mL deionized water, stir evenly at room temperature and place in a reaction kettle, then add a mixture of hydrazine hydrate and diethylenetriamine (15mL hydrazine hydrate, 20mL 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 14 hours, cooled to room temperature, washed , dried to obtain the final product NiSe- Ni 3 Se 2 nanomaterials.

Embodiment 2

[0033] Dissolve the raw materials 1mmol nickel acetate tetrahydrate and 1mmol sodium selenite in 5mL deionized water, stir evenly at room temperature and place in a reaction kettle, then add a mixture of hydrazine hydrate and diethylenetriamine (15mL hydrazine hydrate, 20mL diethylenetriamine ethylenetriamine), then immerse the substrate into the solution in the reactor, then place the reactor in an oven for hydrothermal synthesis reaction, the reaction temperature is 180°C, the reaction time is 12 hours, cooled to room temperature, washed , dried to obtain the final product NiSe- Ni 3 Se 2 nanomaterials.

Embodiment 3

[0035] Dissolve the raw materials 1mmol nickel acetate tetrahydrate and 1mmol sodium selenite in 5mL deionized water, stir evenly at room temperature and place in a reaction kettle, then add a mixture of hydrazine hydrate and diethylenetriamine (15mL hydrazine hydrate, 20mL diethylenetriamine ethylenetriamine), then immerse the substrate into the solution in the reactor, then place the reactor in an oven for hydrothermal synthesis reaction, the reaction temperature is 180°C, the reaction time is 24 hours, cooled to room temperature, washed , dried to obtain the final product NiSe- Ni 3 Se 2 nanomaterials.

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Abstract

The invention discloses a NiSe-Ni used as a supercapacitor 3 Se 2 Three-dimensional pine leaf-like nanomaterial and its preparation method. The nanomaterial is composed of NiSe and Ni 3 Se 2 Composed of two phases, it has a three-dimensional pine leaf-like nanoneedle shape with uniform morphology and structure. The length of the nanoneedles varies, the longest can reach 500nm, and the diameter is 5-25nm. The specific capacitance value of the electrode is 970-1714F / g. NiSe-Ni 3 Se 2 Three-dimensional pine-leaf nanomaterials are synthesized by one-step hydrothermal method. Nickel acetate tetrahydrate and sodium selenite are dissolved in deionized water successively, stirred evenly and placed in a reaction kettle, and then a mixture of hydrazine hydrate and diethylenetriamine is added. liquid, immerse the nickel foam substrate in the reactor, and carry out the hydrothermal synthesis reaction to obtain NiSe‑Ni 3 Se 2 Three-dimensional pine leaf-like nanomaterials. The method is simple to prepare, energy-saving and environment-friendly, and the prepared product has excellent electrochemical properties and is suitable for industrial production.

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 perform...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/30H01G11/86C01B19/04B82Y30/00B82Y40/00
CPCY02E60/13H01G11/24B82Y30/00B82Y40/00C01B19/04C01P2002/72C01P2004/03C01P2004/61H01G11/30H01G11/86
Inventor 吕建国杨杰
Owner ZHEJIANG UNIV
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