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Preparation method and application of nano flower-like Ni-NiMoO4-Ni3S2 micro-nano electrode material

A nano-electrode and nano-composite material technology, applied in nano-composite material preparation and supercapacitor application, micro-field, can solve the problems of unsuitable synthesis of metal oxide or sulfide core-shell nano-heterostructure, complicated operation and high cost, reaching Great commercial prospects, improved electrochemical performance, reduced use of binders

Active Publication Date: 2019-11-01
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these synthetic methods are not suitable for the synthesis of metal oxide or sulfide core-shell nanoheterostructures with large specific surface area on conductive substrates, and the operation is complicated and costly.

Method used

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  • Preparation method and application of nano flower-like Ni-NiMoO4-Ni3S2 micro-nano electrode material
  • Preparation method and application of nano flower-like Ni-NiMoO4-Ni3S2 micro-nano electrode material
  • Preparation method and application of nano flower-like Ni-NiMoO4-Ni3S2 micro-nano electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A nanoflower-like structure Ni@NiMoO 4 @Ni 3 S 2 Micro-nanocomposite, in situ growth of NiMoO on nickel foam via a simple and low-cost hydrothermal method and heat treatment process 4 array of nanowires. Ni was then hydrothermally 3 S 2 Nanosheets supported on Ni@NiMoO 4 Nanoflower-like Ni@NiMoO formed on the nanowire skeleton 4 @Ni 3 S 2 Micro and nanocomposites.

[0035] The nano-flower structure Ni@NiMoO described in the present invention 4 @Ni 3 S 2 The preparation method of micro-nanocomposite material, comprises the following steps: (1) nickel foam load NiMoO 4 The preparation of the nanowires is as follows: the nickel foam is cut into 3×2.5cm 2 , respectively, with 1M NaOH, 1M HCl, deionized water and absolute ethanol for 15 minutes until the nickel foam is neutral. Then place it in a vacuum oven and dry for 12 hours. Put 211mg of sodium molybdate and 0.26g of nickel nitrate in a 50mL beaker, add 25mL of deionized water and 5mL of ethylene glycol, ...

Embodiment 2

[0043] A nanoflower-like structure Ni@NiMoO 4 @Ni 3 S 2 Micro-nanocomposite material, characterized by in-situ growth of NiMoO on nickel foam by simple and low-cost hydrothermal method and heat treatment process 4 array of nanowires. Ni was then hydrothermally 3 S 2 Nanosheets supported on Ni@NiMoO 4 On the nanowire skeleton, a nanoflower-like structure Ni@NiMoO is formed 4 @Ni 3 S 2 Micro and nanocomposites.

[0044] The nanoflower-like structure Ni@NiMoO described in this example 4 @Ni 3 S 2 The preparation method of the micro-nano composite material is as in Example 1 except that the hydrothermal time of step (1) is adjusted to 6h, and the hydrothermal time of step (2) is changed to 4h.

[0045] The nano flower structure Ni@NiMoO described in this example 4 @Ni 3 S 2The application of the preparation method of the micro-nano composite material is the same as that in Example 1.

Embodiment 3

[0047] A nanoflower-like structure Ni@NiMoO 4 @Ni 3 S 2 Micro-nanocomposite material, characterized by in-situ growth of NiMoO on nickel foam by simple and low-cost hydrothermal method and heat treatment process 4 array of nanowires. Ni was then hydrothermally 3 S 2 Nanosheets supported on Ni@NiMoO 4 On the nanowire skeleton, a nanoflower-like structure Ni@NiMoO4@Ni is formed 3 S 2 Micro and nanocomposites.

[0048] The nanoflower-like structure Ni@NiMoO described in this example 4 @Ni 3 S 2 The preparation method of the micro-nano composite material is the same as the implementation example 1 except that the amount of nickel sulfate is changed to 100 mg in step (2).

[0049] The nano flower structure Ni@NiMoO described in this example 4 @Ni 3 S 2 The application of the preparation method of the micro-nano composite material is the same as that in Example 1.

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Abstract

The invention provides a nano flower-like Ni-NiMoO4-Ni3S2 micro-nano electrode material, wherein the foamed nickel is used as a matrix, and then NiMoO4 nano wires and Ni3S2are loaded on the matrix toprepare the nano flower-like Ni-NiMoO4-Ni3S2 micro-nano electrode material. The nano flower-like Ni-NiMoO4-Ni3S2 micro-nano electrode material provided in the invention is applied to a supercapacitor.The material has the properties of excellent conductivity, high capacitance, high power density and the like. The invention also provides a preparation method of the micro-nano composite material. The preparation method comprises the following steps: (1) processing the foamed nickel; (2) preparing a Ni (at) NiMoO4 nanowire; (3) preparing a Ni (at) NiMoO4 (at) Ni3S2 micro / nano material. The invention further provides the application of the micro-nano composite material.

Description

technical field [0001] The invention belongs to the technical field of preparation of micro-nano composite materials and application of supercapacitors, and relates to a nano flower-shaped Ni@NiMoO with high energy storage performance based on nickel foam 4 @Ni 3 S 2 Synthesis methods and applications of micro- and nano-electrode materials. Background technique [0002] A supercapacitor is a device with high power density, long cycle life, and environmental protection. With the deepening of research, many materials have been applied to the electrode materials of supercapacitors, such as carbon materials, conductive polymers, etc. At present, electrode materials for supercapacitors are no longer limited to these traditional materials, and metal oxides and metal sulfides have also been extensively studied as electrode materials. Because of its good specific capacitance, high power density and other characteristics, it has unique advantages in the preparation of electrode m...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/30H01G11/46H01G11/84H01G11/86
CPCH01G11/24H01G11/30H01G11/46H01G11/84H01G11/86Y02E60/13
Inventor 杨萍丰丽娜凌文钦石建军朱立聂志豪章文凯
Owner ANHUI UNIV OF SCI & TECH
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