Gladiolus flower-like nickel selenide/cobalt selenide/nickel diselenide nanocomposite array electrode material

A nanocomposite, array electrode technology, applied in metal selenide/tellurium, selenium/tellurium compound, hybrid capacitor electrodes, etc., to achieve high efficiency, enhanced electrochemical performance, and high purity

Active Publication Date: 2022-05-27
ANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still great challenges in order to successfully combine various atoms, give full play to various advantages, and achieve excellent synergistic effects between atoms.

Method used

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  • Gladiolus flower-like nickel selenide/cobalt selenide/nickel diselenide nanocomposite array electrode material
  • Gladiolus flower-like nickel selenide/cobalt selenide/nickel diselenide nanocomposite array electrode material
  • Gladiolus flower-like nickel selenide/cobalt selenide/nickel diselenide nanocomposite array electrode material

Examples

Experimental program
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Effect test

Embodiment 1

[0025] ①Add 0.15mmol of Se powder to 15mL of ethylenediamine, add pretreated nickel foam (10mm*40mm*1.5mm) after the Se powder is dissolved, put it in a 25mL reaction kettle with PTFE lining for 180 ℃ hydrothermal treatment, after the reaction, the reaction kettle is naturally cooled, the reacted nickel foam is washed with ethanol, and dried in vacuum to obtain Ni 3 Se 2 Nanowire Array Precursors.

[0026] ② 0.16 mmol of cobalt acetate tetrahydrate was added to a mixed solvent of anisole and methanol (12 mL of anisole and 4 mL of methanol), heated for 30 minutes, and dissolved to prepare a mixed solvent reaction solution.

[0027] 3. The mixed solvent reaction solution of step (2) is transferred into the 25mL autoclave with polytetrafluoroethylene lining, and the Ni synthesized in step (1) is added. 3 Se 2 The nanowire array precursor template was sealed and solvothermally treated at 120°C for 6 hours, and cooled naturally after the reaction. The obtained product was washe...

Embodiment 2

[0031] ①Add 0.15mmol of Se powder to 15mL of ethylenediamine, add pretreated nickel foam (10mm*40mm*1.5mm) after the Se powder is dissolved, put it in a 25mL reaction kettle with PTFE lining for 180 ℃ hydrothermal treatment, after the reaction, the reaction kettle is naturally cooled, the reacted nickel foam is washed with ethanol, and dried in vacuum to obtain Ni 3 Se 2 Nanowire Array Precursors.

[0032] ② 0.20 mmol of cobalt acetate tetrahydrate was added to 16 mL of mixed solvent (13 mL of anisole and 3 mL of methanol), heated for 30 minutes, and dissolved to prepare a mixed solvent reaction solution.

[0033] 3. The mixed solvent reaction solution of step (2) is transferred into the 25mL autoclave with polytetrafluoroethylene lining, and the Ni synthesized in step (1) is added. 3 Se 2 The nanowire array precursor template was sealed and solvothermally treated at 100°C for 8 hours, and cooled naturally after the reaction. The obtained product was washed with ethanol an...

Embodiment 3

[0036] ①Add 0.15mmol of Se powder to 15mL of ethylenediamine, add pretreated nickel foam (10mm*40mm*1.5mm) after the Se powder is dissolved, put it in a 25mL reaction kettle with PTFE lining for 180 ℃ hydrothermal treatment, after the reaction, the reaction kettle is naturally cooled, the reacted nickel foam is washed with ethanol, and dried in vacuum to obtain Ni 3 Se 2 Nanowire Array Precursors.

[0037] ② 0.32 mmol of cobalt acetate tetrahydrate was added to 16 mL of mixed solvent (14 mL of anisole and 2 mL of methanol), heated for 30 minutes, and dissolved to prepare a mixed solvent reaction solution.

[0038] 3. The mixed solvent reaction solution of step (2) is transferred into the 25mL autoclave with polytetrafluoroethylene lining, and the Ni synthesized in step (1) is added. 3 Se 2 The nanowire array precursor template was sealed and solvothermally treated at 140°C for 6 hours, and cooled naturally after the reaction. The obtained product was washed with ethanol an...

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Abstract

The invention discloses a gladiolus flower-shaped NiSe / CoSe / Ni 3 Se 2 The nanocomposite array electrode material and its preparation method belong to the technical field of supercapacitor electrode material preparation. It is prepared by the following steps: adding cobalt acetate tetrahydrate into a mixed solvent of anisole and methanol, heating and dissolving to form a mixed reaction solution, moving it into a reaction kettle, and then putting it into the prefabricated Ni 3 Se 2 Nanowire array precursor, heat treatment after sealing the reactor, synthesis of gladiolus-like NiSe / CoSe / Ni with both one-dimensional and two-dimensional structural characteristics 3 Se 2 Nanocomposite array electrode materials. The obtained electrode material has excellent electrochemical performance, with a specific capacitance of 1666 F / g at a current density of 0.5 A / g, and a specific capacitance of 944 F / g even at a current density of 2.5 A / g. .

Description

technical field [0001] The invention belongs to the technical field of supercapacitor electrode material preparation, in particular to a NiSe / CoSe / Ni 3 Se 2 Array electrode material and preparation method thereof. Background technique [0002] With the increase of atomic species, multi-component compounds can take advantage of the advantages of various elements and the excellent synergy between elements, so that multi-component compounds have excellent physical and chemical properties. However, in order to successfully combine multiple atoms, give full play to various advantages, and achieve excellent synergistic effects between atoms, there are still great challenges. In addition, nanomaterials have some exotic physical and chemical properties due to their small particle size, large specific surface area, high surface energy, and large proportion of surface atoms. Therefore, multi-component compounds with nanostructures are a new class of functional materials worthy of i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B19/00H01G11/24H01G11/30H01G11/86
CPCC01B19/007H01G11/30H01G11/24H01G11/86C01P2006/40C01P2004/03C01P2002/72Y02E60/13
Inventor 杜卫民刘欣朱琳姚聪魏成振张道军
Owner ANYANG NORMAL UNIV
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