Preparation method of crystalline-amorphous MoO3@Ni3S2 material for super capacitor

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

Active Publication Date: 2020-08-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Preparation method of crystalline-amorphous MoO3@Ni3S2 material for super capacitor
  • Preparation method of crystalline-amorphous MoO3@Ni3S2 material for super capacitor
  • Preparation method of crystalline-amorphous MoO3@Ni3S2 material for super capacitor

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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 preparation method of a crystalline-amorphous MoO3@Ni3S2 material for a super capacitor, and relates to a composite material and a preparation technology, in particular to the technical field of super capacitor electrode materials. The material is a crystalline-amorphous MoO3@Ni3S2 material which is a mixture of crystalline MoO3, amorphous Ni3S2 and foamed nickel, foamednickel is used as a self-supporting substrate and a nickel source; then, a crystalline Ni3S2 nanosheet is generated on the surface in situ; amorphous MoO3 is further synthesized on the crystalline state Ni3S2 nanosheets, and the crystalline-amorphous MoO3@Ni3S2 material is obtained, the crystalline Ni3S2 nanosheets are arranged on the surface of the foamed nickel serving as the self-supporting substrate in an array mode, and the amorphous MoO3 is doped between the crystalline Ni3S2 nanosheets. On one hand, the material inherits high conductivity of crystalline Ni3S2, and on the other hand, anamorphous structure of amorphous MoO3 possibly accelerates charge transfer, so that electrochemical reaction is promoted, and high specific capacitance is realized.

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 Applications(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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