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Nickel sulfide nanoparticle/nitrogen-doped fiber-based carbon aerogel composite material and preparation method therefor

A nanoparticle and carbon aerogel technology, applied in the field of nanomaterials, can solve the problems of limiting pseudocapacitive properties, easy agglomeration of nickel sulfide nanoparticles, poor recycling performance, etc. , the effect of excellent capacitance performance

Inactive Publication Date: 2016-06-01
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, pure nickel sulfide nanoparticles are easy to agglomerate, have poor electrical conductivity, and poor cycle performance, which greatly limits their pseudocapacitive performance.

Method used

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  • Nickel sulfide nanoparticle/nitrogen-doped fiber-based carbon aerogel composite material and preparation method therefor
  • Nickel sulfide nanoparticle/nitrogen-doped fiber-based carbon aerogel composite material and preparation method therefor
  • Nickel sulfide nanoparticle/nitrogen-doped fiber-based carbon aerogel composite material and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1, This embodiment includes the following steps:

[0039] (1) Preparation of dopamine-coated fiber-based biomass materials. Dissolve 2.8g of tris(hydroxymethyl)aminomethane and 1.75g ​​of tris(hydroxymethyl)aminomethane hydrochloride in 350mL of deionized water. After the dissolution is complete, add 350mg of dopamine monomer and stir to dissolve. Put 2 g of absorbent cotton into the above solution, place the dopamine solution containing absorbent cotton in a water bath at 60° C., and stir for 1 hour. After the reaction, wash the sample repeatedly with deionized water for 3-5 times, and dry it for later use;

[0040] (2) Take the dried polydopamine-coated absorbent cotton material in (1) and put it in a crucible, and carbonize it in a tube furnace at 800°C for 2 hours under the protection of nitrogen. The obtained nitrogen-doped cellulose-based carbon airgel is denoted as N DA -CFA;

[0041] (3) Dissolve 2mmol of nickel acetate and 4mmol of thiourea in 30m...

Embodiment 2

[0042] Example 2 , the amount of nickel acetate and thiourea in Example 1 were changed to 4mmol and 8mmol respectively, the rest were the same as in Example 1, and the composite material finally obtained was recorded as NiS / N-CFA-4.

Embodiment 3

[0043] Example 3 , the amount of nickel acetate and thiourea in Example 1 was changed to 6mmol and 12mmol respectively, the rest were the same as in Example 1, and the composite material finally obtained was recorded as NiS / N-CFA-6.

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Abstract

The invention belongs to the technical field of nanomaterial, and specifically discloses a nickel sulfide nanoparticle / nitrogen-doped fiber-based carbon aerogel composite material and a preparation method therefor. The composite material is prepared by the steps of adopting nickel salt and a sulfur source, and performing in-situ growth of the nickel sulfide nanoparticles on the nitrogen-doped cellulose-based carbon aerogel; the raw materials comprise a biomass material rich in fibers, nickel salt, thiocarbamide, dopamine and aniline monomer; the preparation process comprises the steps of preparing a poly-dopamine-coated fiber-based biomass material or a polyaniline-coated cellulose-based biomass material through a one-step polymerization method; preparing the nitrogen-doped cellulose-based carbon aerogel through a high temperature carbonization method; and performing in-situ growth of the nickel sulfide nanoparticles on the surface of the nitrogen-doped fiber-based carbon aerogel by adopting a one-step solvothermal method. The composite material prepared by the invention has the uniform distribution characteristic of the nickel sulfide nanoparticles on the nitrogen-doped fiber-based carbon aerogel, so that the composite material can be used as the ideal supercapacitor electrode material.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a nickel sulfide nanoparticle / nitrogen-doped fiber-based carbon airgel composite material and a preparation method thereof. Background technique [0002] Carbon airgel is a new type of three-dimensional porous material, which is widely used as carrier material, adsorption material and supercapacitor and lithium ion Electrode materials for new energy devices such as batteries. As a kind of carbon aerogel, fiber-based carbon aerogel is mainly a three-dimensional network porous structure composed of abundant fibers, which is conducive to the loading of nanoparticles with high performance and activity, and has attracted much attention. [0003] The nitrogen atom has a similar atomic size to the carbon atom, but the nitrogen atom contains a lone pair of electrons that can conjugate with the carbon of the benzene ring. In addition, nitrogen atoms have electron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/583H01M4/62H01M4/60H01G11/32H01G11/40H01G11/38
CPCH01G11/32H01G11/38H01G11/40H01M4/362H01M4/5815H01M4/583H01M4/60H01M4/625Y02E60/10Y02E60/13
Inventor 刘天西张由芳樊玮左立增鄢家杰黄云鹏张龙生
Owner FUDAN UNIV
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