A kind of preparation method of nickel-iron sulfide/nickel foam nanocomposite electrode material

A nano-composite and electrode material technology, applied in hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, etc., to achieve good cycle stability, improve overall capacitance performance, and high specific capacitance.

Active Publication Date: 2020-05-19
JIANGSU SOPO GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As mentioned above, the application of cobalt-nickel sulfide nanomaterials in supercapacitor electrode materials can significantly improve its electrochemical performance, but there are few related reports about the most economically important binary transition metals with thiophospholipid structure. Sulfide nickel iron sulfide / nickel foam nanomaterials as electrode materials for supercapacitors

Method used

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  • A kind of preparation method of nickel-iron sulfide/nickel foam nanocomposite electrode material
  • A kind of preparation method of nickel-iron sulfide/nickel foam nanocomposite electrode material
  • A kind of preparation method of nickel-iron sulfide/nickel foam nanocomposite electrode material

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Embodiment 1

[0028] A preparation method of nickel-iron sulfide / foam nickel nanocomposite electrode material, comprising the following steps:

[0029] (1) Evenly mix 5ml of ammonia water and 50ml of ethanol in a volume ratio of 1:10 and seal it for later use; soak 3cm*1cm foam nickel in 0.1mol / L HCl solution for 3 minutes, then ultrasonically clean it with deionized water and ethanol for 30 minutes, Remove the oxide film on the surface of the nickel foam, and then put it into an oven to dry for 24 hours for later use.

[0030] (2) Weigh again nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O) 1.0153g and iron nitrate nonahydrate (Fe(NO 3 ) 3 9H 2 (0) 1.4146g, it was added in a 250ml three-necked flask, and 50ml of ethanol was added to dissolve it, while adding the nickel foam and magnet that had been processed in step (1), and magnetically stirred at 80°C under constant temperature reflux for 1 hour.

[0031] (3) Then dropwise add ammonia water to adjust the solution pH=8-10, after rea...

Embodiment 2

[0034] A preparation method of nickel-iron sulfide / foam nickel nanocomposite electrode material, comprising the following steps:

[0035] (1) Evenly mix 5ml of ammonia water and 50ml of ethanol in a volume ratio of 1:10 and seal it for later use; soak 3cm*1cm foam nickel in 0.1mol / L HCl solution for 3 minutes, then ultrasonically clean it with deionized water and ethanol for 30 minutes, Remove the oxide film on the surface of the nickel foam, and then put it into an oven to dry for 24 hours for later use.

[0036] (2) Weigh again nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O) 1.0153g and iron nitrate nonahydrate (Fe(NO 3 ) 3 9H 2 (0) 1.4146g, it was added in a 250ml three-necked flask, and 50ml of ethanol was added to dissolve it, while adding the foamed nickel and magnet that had been processed in step (1), and magnetically stirred at constant temperature under reflux for 2 hours at 100°C.

[0037] (3) Then dropwise add ammonia water to adjust the pH of the solution=8...

Embodiment 3

[0040] A preparation method of nickel-iron sulfide / foam nickel nanocomposite electrode material, comprising the following steps:

[0041] (1) Evenly mix 5ml of ammonia water and 50ml of ethanol in a volume ratio of 1:10 and seal it for later use; soak 3cm*1cm foam nickel in 0.1mol / L HCl solution for 3 minutes, then ultrasonically clean it with deionized water and ethanol for 30 minutes, Remove the oxide film on the surface of the nickel foam, and then put it into an oven to dry for 24 hours for later use.

[0042] (2) Weigh again nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O) 1.0153g and iron nitrate nonahydrate (Fe(NO 3 ) 3 9H 2 (0) 1.4146g, it was added in a 250ml three-necked flask, and 50ml of ethanol was added to dissolve it, while adding the nickel foam and magnetite processed in step (1), and magnetically stirred at constant temperature under reflux for 1.5 hours at 90°C.

[0043] (3) Then add ammonia water dropwise to adjust the pH of the solution to 8-10. Afte...

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Abstract

The invention discloses a preparation method of a nickel iron sulfide / foam nickel nano composite electrode material, The nickel-iron sulfide was prepared by calcination method combined with alcoholicheat method. The nickel-iron sulfide was directly grown on the surface of nickel foam, the material does not need processing and can be used as that electrode material of the supercapacitor directly,The invention can overcome the shortcomings of easily falling off active material and increasing electrode impedance in the process of electrochemical cycle of electrode material, and innovatively combines cobalt-nickel sulfide nanostructure and foam nickel to construct three-dimensional hollow interconnected nanostructure, increases ion nanochannels, and effectively improves the comprehensive capacitance performance of electrode material.

Description

technical field [0001] The invention belongs to the technical field of preparation of electrode materials for supercapacitors, and in particular relates to a preparation method of a nickel-iron sulfide / foam nickel nanocomposite electrode material. Background technique [0002] In recent years, with the increasing shortage of fossil energy, in a large number of energy storage devices, supercapacitors have become green energy storage due to their fast recharging capability, high power density, excellent pulse charge and discharge characteristics, ultra-high working life and safe operation ideal choice. However, the main bottleneck hindering the practical application of existing supercapacitors is their low energy density. [0003] Currently, NiS, CoS, NiCo 2 S 4 、CuCo 2 S 4 , SnS, CuS, ZnS and MoS 2 The research of various transition metal sulfides as capacitor electrode materials has attracted more and more attention of scientists. Among them, compared with using the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/86H01G11/30
CPCH01G11/24H01G11/30H01G11/86Y02E60/13
Inventor 邵守言章明美朱桂生谢吉民唐丽黄春霞陈勇
Owner JIANGSU SOPO GRP
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