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A crystalline-amorphous moo for supercapacitors 3 @ni 3 the s 2 Material preparation method

A supercapacitor, amorphous technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of poor cycle performance of materials, and achieve the effect of enhancing capacitance performance, improving cycle stability, and enriching redox reaction process

Active Publication Date: 2021-04-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is to solve Ni 3 S 2 The problem of poor cycle performance of materials, the present invention has prepared nano-flaky crystalline-amorphous MoO 3 @Ni 3 S 2 Composite materials, and methods for use in supercapacitors

Method used

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  • A crystalline-amorphous moo for supercapacitors <sub>3</sub> @ni <sub>3</sub> the s <sub>2</sub> Material preparation method
  • A crystalline-amorphous moo for supercapacitors <sub>3</sub> @ni <sub>3</sub> the s <sub>2</sub> Material preparation method
  • A crystalline-amorphous moo for supercapacitors <sub>3</sub> @ni <sub>3</sub> the s <sub>2</sub> Material preparation method

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example 1

[0024] A kind of supercapacitor electrode material MoO 3 @Ni 3 S 2 The preparation method, the crystalline-amorphous MoO 3 @Ni 3 S 2 The preparation method comprises the following steps:

[0025] Step 1: Pretreatment of foamed nickel: respectively immerse the foamed nickel in 3mol / L dilute hydrochloric acid, absolute ethanol and deionized water for 20 minutes to remove impurities on the surface, and dry 12 pieces in a vacuum drying oven at 40 degrees Celsius Hour;

[0026] Step 2: take by weighing 150mg thioacetamide (CH 3 CSNH 2 ) was dissolved in 100ml deionized water, dispersed by ultrasonic to form a homogeneous solution, added foamed nickel processed in step 1, reacted at 180 degrees Celsius for 24 hours, washed foamed nickel alternately with deionized water and absolute ethanol, and then washed the foamed nickel at 60 degrees Celsius After vacuum drying for 10 hours, a self-supporting Ni foam based on nickel foam was obtained. 3 S 2 @NFMaterial;

[0027] Step ...

example 2

[0029] Step 1: Pretreatment of foamed nickel: respectively immerse the foamed nickel in 3mol / L dilute hydrochloric acid, absolute ethanol and deionized water for 20 minutes to remove impurities on the surface, and dry 12 pieces in a vacuum drying oven at 40 degrees Celsius Hour;

[0030] Step 2: take by weighing 150mg thioacetamide (CH 3 CSNH 2 ) was dissolved in 100ml deionized water, dispersed by ultrasonic to form a homogeneous solution, added foamed nickel processed in step 1, reacted at 180 degrees Celsius for 24 hours, washed foamed nickel alternately with deionized water and absolute ethanol, and then washed the foamed nickel at 60 degrees Celsius After vacuum drying for 10 hours, a self-supporting Ni foam based on nickel foam was obtained. 3 S 2 @NFMaterial;

[0031] Step 3: take by weighing 0.5g ammonium molybdate ((NH 4 ) 6 MO 7 o 24 4H 2 O) dissolved in 30ml deionized water and 4ml ethylene glycol ((CH 2 Oh) 2 ) in the mixed solution, form a homogeneous s...

example 3

[0034] Step 1: Pretreatment of foamed nickel: respectively immerse the foamed nickel in 3mol / L dilute hydrochloric acid, absolute ethanol and deionized water for 20 minutes to remove impurities on the surface, and dry 12 pieces in a vacuum drying oven at 40 degrees Celsius Hour;

[0035] Step 2: take by weighing 150mg thioacetamide (CH 3 CSNH 2 ) was dissolved in 100ml deionized water, dispersed by ultrasonic to form a homogeneous solution, added foamed nickel processed in step 1, reacted at 180 degrees Celsius for 24 hours, washed foamed nickel alternately with deionized water and absolute ethanol, and then washed the foamed nickel at 60 degrees Celsius After vacuum drying for 10 hours, a self-supporting Ni foam based on nickel foam was obtained. 3 S 2 @NFMaterial;

[0036] Step 3: take by weighing 1g ammonium molybdate ((NH 4 ) 6 MO 7 o 24 4H 2 O) dissolved in 30ml deionized water and 4ml ethylene glycol ((CH 2 Oh) 2 ) in the mixed solution, form a homogeneous sol...

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Abstract

The invention discloses a crystalline-amorphous MoO for supercapacitors 3 @Ni 3 S 2 The preparation method of the material relates to composite materials and preparation technology, especially the technical field of supercapacitor electrode materials. The material is crystalline-amorphous MoO 3 @Ni 3 S 2 material, is crystalline MoO 3 , Amorphous Ni 3 S 2 , a mixture of nickel foam, using nickel foam as a self-supporting substrate and nickel source, and then generating crystalline Ni on the surface in situ 3 S 2 nanoflakes, again in the crystalline Ni 3 S 2 Further Synthesis of Amorphous MoO on Nanosheets 3 , to obtain crystalline‑amorphous MoO 3 @Ni 3 S 2 Material, crystalline Ni 3 S 2 The array of nanoflakes is arranged on the surface of nickel foam as a self-supporting substrate, and the amorphous MoO 3 , doped in crystalline Ni 3 S 2 between the nanosheets. The material of the present invention inherits the crystalline Ni on the one hand 3 S 2 The high conductivity of amorphous MoO on the other hand 3 The amorphous structure may accelerate the transfer of charges, thereby promoting the electrochemical reaction and achieving high specific capacitance.

Description

technical field [0001] The invention relates to composite materials and preparation technologies, in particular to the technical field of supercapacitor electrode materials. Background technique [0002] In recent years, the excessive consumption of fossil energy such as coal and oil has made environmental problems increasingly serious, triggering the active search for alternative new energy sources around the world. As an energy storage device with great development potential, supercapacitors have higher power density than batteries. In addition, a series of advantages such as low cost, fast charging and discharging, long service life, and environmental friendliness also make supercapacitors widely used in many fields. application prospects. Based on the energy storage principle of supercapacitors, supercapacitor electrode materials can be divided into electric double layer capacitor electrode materials and pseudocapacitor electrode materials. The electrochemical propertie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/26H01G11/30H01G11/46
CPCH01G11/24H01G11/26H01G11/30H01G11/46Y02E60/13
Inventor 姜晶胡娅林李志鹏何欣芮牛夷周婷王超
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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