Metal fiber-nanometer carbon fiber-carbon aerogel composite material and preparation method and use thereof

A nano-carbon fiber and metal fiber technology, applied in metal material coating process, hybrid/electric double-layer capacitor manufacturing, electrode manufacturing and other directions, can solve the problems of stable dispersion and preparation of CNTs and other problems, achieve low internal resistance, flexible regulation, and ease of use. the effect of making

Inactive Publication Date: 2010-03-03
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Wallace et al. (Adv. Mater., 2008, 20, 566.) reported a large-scale LIB electrode material directly growing CNTs on carbon paper. Although a reversible discharge capacity of up to 572mAh / g was obtained, it was found that the stable dispersion of CNTs difficult to prepare

Method used

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  • Metal fiber-nanometer carbon fiber-carbon aerogel composite material and preparation method and use thereof
  • Metal fiber-nanometer carbon fiber-carbon aerogel composite material and preparation method and use thereof
  • Metal fiber-nanometer carbon fiber-carbon aerogel composite material and preparation method and use thereof

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Experimental program
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Effect test

Embodiment 1

[0036]The first step: according to the literature (Applied Catalysis A 2007, 328:77-82), a sintered nickel metal fiber network with a diameter of 159 mm and a thickness of 1 mm was prepared with 5 grams of nickel metal fibers with a diameter of 8 microns and a length of 3 to 4 mm structure, cut a disc with a diameter of 8 cm and a weight of 1.2 g from the obtained material, and place it in a tubular catalytic chemical vapor deposition reactor with an inner diameter of 8 cm. The flow rate of milliliters / minute feeds the mixed gas of ethylene / hydrogen (1 / 4, volume) and reacts at 700 ℃ for 45 minutes, then switches to nitrogen and drops to room temperature in a nitrogen atmosphere, and the content of carbon nanofibers is 60%. (weight) of nickel metal fiber-carbon nanofiber composites. This material is labeled A'.

[0037] The second step: configure the mixed aqueous solution with an organic matter content of 55% (weight) according to the ratio of phenol / formaldehyde molar ratio ...

Embodiment 2

[0044] Except the following difference, all the other are the same as embodiment 1.

[0045] In the first step, a nickel metal fiber-nano-carbon fiber composite material with a nano-carbon fiber content of 51% (weight) is prepared by using ethylene as a carbon source.

[0046] In the second step, using N-methyl-2 pyrrolidone as a solvent, configure a mixed solution containing 8% (weight) pyromellitic dianhydride and p-phenylenediamine, wherein pyromellitic dianhydride / p-phenylenediamine The molar ratio is 1 / 1. The nickel metal fiber-carbon nanofiber composite material prepared in the first step was impregnated with the same volume of the obtained above solution and placed at room temperature for 30 minutes. After the acylation reaction of the amine is fully carried out to form a polyimide resin, the high-purity N 2 In the atmosphere, heat up to 950°C at a heating rate of 4°C / min and keep the temperature constant for 1 hour to carbonize the polyimide resin to form carbon airg...

Embodiment 3

[0048] Except the following difference, all the other are the same as embodiment 1.

[0049] In the first step, a nickel metal fiber-nano-carbon fiber composite material with a nano-carbon fiber content of 51% (weight) is prepared by using ethylene as a carbon source.

[0050] In the second step, weigh 0.92 grams of phenol, heat and melt it in a water bath at 45°C, then add 0.2 grams of 20% NaOH solution, stir for 10 minutes, then add 1.56 grams of 37% formaldehyde solution and seal it. Stir for 1 hour under heating in a water bath, adjust the pH value of the resulting mixture to neutral with 0.2 mol / L hydrochloric acid solution, and distill off water under reduced pressure at room temperature to obtain a solid sample of phenolic resin; add the resulting solid sample to 4.8 g of absolute ethanol and stir After 1 minute, let it stand for 2 hours, take the sol containing phenolic resin in the upper layer, and slowly add it dropwise to the clear sol composed of 6.5 grams of ethan...

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Abstract

The invention discloses a metal fiber-nanometer carbon fiber-carbon aerogel composite material and a preparation method and a use thereof, wherein, the material contains metal fiber, nanometer carbonfiber and carbon aerogel; a binding point of the metal fiber is sintered on a tri-dimensional net structure, the nanometer carbon fiber grows on the metal fiber, and the carbon aerogel is coated on the nanometer carbon fiber. The preparation method comprises the following steps: sintering the metal fiber net structure in a large area on a selected thin layer; allowing the nanometer carbon fiber togrow by catalyzing a selected chemical vapor phase deposition method of a carbon-containing compound under a specified condition; then coating a selected organic polymer on the nanometer carbon fiber, and carbonizing the polymer at a certain temperature to obtain the metal fiber-nanometer carbon fiber-carbon aerogel composite material. The material can be taken as an electrode material of a novelchemical power supply; and the material has a self-supporting integral structure without an organic polymer macromolecular binding agent, has a tri-dimensional layered hole structure which is beneficial to ion transmission and storage, and has high electrical conductivity, small internal resistance and good chemical energy storage performance.

Description

technical field [0001] The invention relates to a metal fiber-nano-carbon fiber-carbon airgel composite material and a preparation method thereof, in particular to a thin-layer large-area network constructed of micron-diameter metal fibers and nano-carbon fibers grown on metal fibers A composite material composed of carbon airgel coated on nano carbon fibers and a preparation method thereof belong to the technical field of functional materials and preparation thereof. technical background [0002] Lithium-ion batteries (LIB) and supercapacitors (EDLC) and other new chemical power supply technologies, due to their significant advantages in energy saving, environmental protection and carbon emission reduction, have become increasingly clear as a breakthrough in the development of new energy power for a long time. The new chemical power source has been included in the "National Outline of Medium- and Long-term Science and Technology Development Plan" and "Shanghai City's Outlin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/04H01G9/058H01M4/02H01M4/04C23C16/26C23C16/44H01G11/38H01G11/86
CPCY02E60/12Y02E60/10
Inventor 路勇方玉珠姜芳婷薛青松何鸣元
Owner EAST CHINA NORMAL UNIV
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