CN113913973A - Ni/MnO/C composite nanofiber and preparation method and application thereof - Google Patents

Ni/MnO/C composite nanofiber and preparation method and application thereof Download PDF

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Publication number
CN113913973A
CN113913973A CN202111338126.6A CN202111338126A CN113913973A CN 113913973 A CN113913973 A CN 113913973A CN 202111338126 A CN202111338126 A CN 202111338126A CN 113913973 A CN113913973 A CN 113913973A
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mno
nano
composite
composite nanofiber
nanofiber
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刘久荣
刘悦
曾志辉
吴莉莉
刘伟
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Shandong University
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Shandong University
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
    • D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D01F1/106—Radiation shielding agents, e.g. absorbing, reflecting agents
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
    • D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F9/22—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Fibers (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

The invention discloses a Ni/MnO/C composite nanofiber and a preparation method and application thereof, wherein the Ni/MnO/C composite nanofiber comprises carbon nanofibers, and Ni nanoparticles and MnO nanoparticles which are attached to the carbon nanofibers, and the diameter of the nanofiber is 250-300 nm. The synthesized composite nanofiber has good electromagnetic wave absorption performance and good stability. The Ni/MnO/C composite nanofiber material is prepared by combining an electrostatic spinning method with a carbonization process, and the Ni/MnO/C composite nanofiber has excellent EMW absorption performance due to the synergistic effect of the components and the microstructure. The method has the advantages of simple equipment, simple process, easy realization of large-scale production and wide application prospect.

Description

Ni/MnO/C composite nanofiber and preparation method and application thereof
Technical Field
The invention belongs to the technical field of electromagnetic wave absorption, and particularly relates to a Ni/MnO/C composite nanofiber as well as a preparation method and an application thereof.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The high-performance electromagnetic wave absorbing material is required to have the performances of thin matching thickness, effective absorption bandwidth, low material density, high absorption strength and the like. Magnetic metals have wide applications in the field of electromagnetic wave absorbing materials. However, the simple loss mechanism and the high density of the magnetic metal are not favorable for practical use. The carbon material has low density and remarkable electrical loss capability, is used for improving the magnetic metal-based electromagnetic wave absorbing material, and for example, the (Fe, Ni)/C nanocapsule taking (Fe, Ni) alloy as a core and graphite as a shell is prepared in the prior art. These composite materials exhibit good electromagnetic wave absorption properties because the introduction of the carbon component can effectively increase the loss capability of the magnetic metal and broaden the effective absorption band thereof. However, these carbon/magnetic metal composite materials have too high dielectric constants and poor impedance matching, inevitably resulting in too much reflection of electromagnetic waves at the incident surface, which is not favorable for improving the microwave absorption performance.
Disclosure of Invention
Aiming at the defects of the existing electromagnetic wave absorbing material, the invention provides the Ni/MnO/C composite nanofiber as well as the preparation method and the application thereof, and the synthesized composite nanofiber has good electromagnetic wave absorbing performance and good stability. The Ni/MnO/C composite nanofiber material is prepared by combining an electrostatic spinning method with a carbonization process, and the Ni/MnO/C composite nanofiber has excellent EMW absorption performance due to the synergistic effect of the components and the microstructure. The method has the advantages of simple equipment, simple process, easy realization of large-scale production and wide application prospect.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, the invention provides a Ni/MnO/C composite nanofiber, comprising a carbon nanofiber and Ni nanoparticles and MnO nanoparticles attached to the carbon nanofiber, wherein the diameter of the nanofiber is 250-300nm, and the molar ratio of the Ni nanoparticles to the MnO nanoparticles is 1: 0.3-3.
In a second aspect, the present invention provides a method for preparing the Ni/MnO/C composite nanofiber, comprising the steps of:
dissolving a nickel source, a carbon source and a manganese source in an organic solvent, uniformly mixing, then carrying out electrostatic spinning to prepare a precursor, and drying, pre-oxidizing and carbonizing the precursor to prepare the Ni/MnO/C composite nanofiber.
In a third aspect, the invention provides an application of the Ni/MnO/C composite nanofiber as an electromagnetic wave absorbing material.
The beneficial effects achieved by one or more of the embodiments of the invention described above are as follows:
(1) in the prepared Ni/MnO/C composite nano-fiber, MnO nano-particles improve the impedance matching characteristic, and Ni metal nano-particles increase the attenuation capacity. The change of the molar ratio of the Ni nano-particles to the MnO nano-particles effectively regulates and controls electromagnetic parameters, and when the molar ratio of the Ni to the MnO is 1:1, better impedance matching and attenuation capability is obtained.
(2) The preparation process of the Ni/MnO/C composite nanofiber is simple, convenient to operate, good in controllability, short in preparation period and easy to industrialize.
(3) The average diameter of the prepared Ni/MnO/C composite nano-fiber is 250nm, and nickel oxide and manganese oxide nano-particles are uniformly distributed on the surface of the nano-composite fiber, so that the prepared Ni/MnO/C composite nano-fiber has a large aspect ratio and a large specific surface, and is strong in oxidation resistance and corrosion resistance.
(4) The absorber of the Ni/MnO/C composite nanofiber has the characteristics of thin thickness, small density, wide absorption frequency band and high absorption strength, also has good impedance matching characteristic and good interference phase cancellation and loss attenuation capacity, and can provide a thought for the design of electromagnetic wave absorbing materials in the future.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is an XRD diffraction pattern of Ni/MnO/C composite nanofibers obtained after carbonization in example 1.
FIG. 2 is a scanning electron microscope image of the Ni/MnO/C composite nanofiber obtained after carbonization in example 1.
FIG. 3 is a scanning electron micrograph of a carbon nanofiber obtained after carbonization of the comparative example.
FIG. 4 is a transmission electron micrograph of the Ni/MnO/C composite nanofiber obtained in example 1.
FIG. 5 is a magnetic property test curve of the Ni/MnO/C composite nanofiber obtained in example 1.
In FIG. 6, (a) is a graph of the minimum reflection loss of the Ni/MnO/C composite nanofiber prepared in example 1 and (b) is a top view of a graph of the minimum reflection loss of the Ni/MnO/C composite nanofiber prepared in example 1; (c) is a graph of the minimum reflection loss of the Ni/MnO/C composite nanofiber prepared in example 2, (d) is a top view of the graph of the minimum reflection loss of the Ni/MnO/C composite nanofiber prepared in example 2; (e) is a graph of the minimum reflection loss of the Ni/MnO/C composite nanofiber prepared in example 3, (f) is a top view of the graph of the minimum reflection loss of the Ni/MnO/C composite nanofiber prepared in example 3; (g) is a graph of the minimum reflection loss of the Ni/MnO/C composite nanofiber prepared in the comparative example, and (h) is a top view of a graph of the minimum reflection loss of the Ni/MnO/C composite nanofiber prepared in the comparative example.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
In a first aspect, the invention provides a Ni/MnO/C composite nanofiber, comprising a carbon nanofiber and Ni nanoparticles and MnO nanoparticles attached to the carbon nanofiber, wherein the diameter of the nanofiber is 250-300nm, and the molar ratio of the Ni nanoparticles to the MnO nanoparticles is 1: 0.3-3.
In some embodiments, the nanofibers have a length of 10-90 microns;
preferably, the nanofibers have a length of 30 to 80 microns.
In some embodiments, the molar ratio of Ni nanoparticles to MnO nanoparticles is 1: 1.
furthermore, the particle size of the Ni nano-particles is 10-20 nm; the particle size of MnO nano particles is 20-40 nm.
In some embodiments, the Ni/MnO/C composite nanofibers have a saturation magnetic susceptibility of 10-40emu/g and a coercivity Hc of 25-50 Oe.
Furthermore, Ni nanoparticles and MnO nanoparticles are uniformly distributed on the surface of the carbon nanofibers.
In a second aspect, the present invention provides a method for preparing the Ni/MnO/C composite nanofiber, comprising the steps of:
dissolving a nickel source, a carbon source and a manganese source in an organic solvent, uniformly mixing, then carrying out electrostatic spinning to prepare a precursor, and drying, pre-oxidizing and carbonizing the precursor to prepare the Ni/MnO/C composite nanofiber.
In some embodiments, the nickel source is nickel acetylacetonate or nickel nitrate.
In some embodiments, the carbon source is polyvinylpyrrolidone or polyacrylonitrile.
In some embodiments, the manganese source is manganese acetylacetonate.
In some embodiments, the organic solvent is N, N-dimethylformamide.
Further, the molar ratio of the nickel source to the manganese source is 1: 3-9.
Further, the concentration of the nickel source in the spinning solution is 0.15 to 0.25 mol/L.
Further, firstly, polyvinylpyrrolidone which is relatively difficult to dissolve is added into N, N-dimethylformamide, stirred and dissolved until the solution is uniform and transparent, then nickel acetylacetonate and manganese acetylacetonate which are relatively easy to dissolve are added, and the mixture is continuously mixed until the solution is uniform.
In some embodiments, the DC voltage for electrospinning is from 10 to 14kV and the spinning distance is from 20 to 30 cm.
Further, the internal temperature of the spinning machine is 35 to 45 ℃, preferably 40 ℃.
In some embodiments, the pre-oxidation temperature is 150-. The pre-oxidation function is as follows: 1. fully volatilizing the residual N, N-dimethylformamide on the surface of the non-woven fabric formed by the fibers; 2. the integral one-dimensional shape with large length-diameter ratio of the fiber is stabilized.
In some embodiments, the carbonization temperature is 600-.
Further, the carbonization is carried out in H2The heating is carried out under the atmosphere, and the heating rate is 2-5 ℃/min.
Furthermore, the carbonization temperature is 650-750 ℃, the reaction time is 1.8-2.2 hours, and the heating rate is 2 ℃/min.
In a third aspect, the invention provides an application of the Ni/MnO/C composite nanofiber as an electromagnetic wave absorbing material.
The Ni/MnO/C composite nano-fiber of the invention has a synergistic effect among the components due to reasonable component collocation and a unique composite structure, thereby showing excellent electromagnetic wave absorption performance. Specifically, the addition of the metallic nickel improves the attenuation capability of the material and reduces the thickness of the whole material. And the addition of the manganese oxide improves the impedance matching behavior of the material.
After the Ni/MnO/C composite nanofiber of the present invention was mixed with paraffin wax at a 15% filling rate, when the MnO/Ni ratio was 1:1, the effective absorption bandwidth of the Ni/MnO/C composite nanofiber at 2.9mm was 6.5GHz and the minimum reflection loss at 2.3mm was-53.23 dB.
Example 1
Preparing Ni/MnO/C composite nano-fiber:
adding nickel (II) acetylacetonate C10H14O4Co and 1.4g polyvinylpyrrolidone PVP are added into 10mL of N, N-dimethylformamide DMF and stirred vigorously to dissolve slowly and uniformly until the solution is uniform and transparent. Then continuously stirring, and then adding manganese acetylacetonate C10H14MnO4Until the mixed solution became homogeneous, the molar ratio of nickel acetylacetonate to manganese acetylacetonate was 1: 1. The resulting fluid was transferred to a glass-filled syringe.
The electrostatic spinning conditions were DC voltage 12.0kV, collection distance 25cm, internal temperature of the spinning machine 40 ℃.
And then drying the obtained non-woven fabric precursor nanofiber in a 50 ℃ oven for 4h, and pre-oxidizing the non-woven fabric precursor nanofiber in air at 180 ℃ for 2h to stabilize the structure of the non-woven fabric precursor nanofiber. The polymer fibers were placed in an oven at 700 ℃ H2Carbonizing for 2h at the temperature rising rate of 2 ℃/min under the atmosphere.
The X-ray powder diffraction pattern (XRD) of the obtained sample (as shown in figure 1) shows that the synthesized Ni/MnO/C composite nanofiber contains manganese oxide and nickel, and the purity of the synthesized iron is very high compared with standard diffraction data (JCPDS No.07-0230) and (JCPDF 04-0850). The characterization of a Scanning Electron Microscope (SEM) (shown in figure 3) and a Transmission Electron Microscope (TEM) (shown in figure 4) shows that the average diameter of the fiber is 250-300nm, and the surface of the fiber is rough and has the characteristic of high aspect ratio.
The results of characterization of the synthesized Ni/MnO/C composite nanofiber sample with a VSM magnetometer showed that the sample had a saturation magnetic susceptibility of 9.43emu/g and a coercivity Hc of 40Oe, see FIG. 5.
An electromagnetic wave absorber was prepared from the Ni/MnO/C composite nanofiber of example 1, and a test experiment was performed using an Agilent Technologies E8363A electromagnetic wave vector network analyzer. The NMC nanocomposite was mixed with paraffin wax at 15% filling ratio to make a ring-shaped sample, and its electromagnetic parameters were measured. The test range is 2-18GHz (epsilon)r’)r' the value is between 4.5 and 10.0, (. epsilon.)r”)rThe variation range of the' value is between 4.5 and 10 (mu)r’)r'the values of the' change ranges from 0.95 to 1.03, (mu) respectivelyr”)rThe "value fluctuated around 0, and when the MnO/Ni ratio was 1:1, the effective absorption bandwidth of the Ni/MnO/C composite nanofiber was 6.5GHz at 2.9mm and the minimum reflection loss was-53.23 dB at 2.3mm, and the electromagnetic wave absorption curve thereof was as shown in FIG. 6.
Example 2
As in example 1, except that: the molar ratio of nickel acetylacetonate to manganese acetylacetonate is 3: 1, preparing the Ni/MnO/C composite nanofiber, and representing by a Scanning Electron Microscope (SEM), wherein the diameter of the synthesized composite nanofiber is 250-300 nm.
Comparing the X-ray powder diffraction pattern (XRD) with the standard diffraction data shows that the synthesized composite nano-fiber is still MnO and Ni composite.
Example 3
As in example 1, except that: the molar ratio of nickel acetylacetonate to manganese acetylacetonate is 1: and 3, finally preparing the Ni/MnO/C composite nano-fiber, wherein the composite nano-fiber is still compounded by MnO and Ni in an X-ray powder diffraction pattern (XRD). Scanning Electron Microscope (SEM) characterization shows that the size of the synthesized ZnO/Co composite nanofiber is 250-300 nm.
Comparative example
The precursor was prepared as described in example 1, except that nickel acetylacetonate and manganese acetylacetonate were not added. Scanning Electron Microscope (SEM) characterization shows that the material does not show a fiber shape, and the addition of the nickel salt and the manganese salt can reduce agglomeration of the precursor fiber in a pre-oxidation process and a heat treatment process to maintain the one-dimensional large length-diameter ratio shape of the precursor fiber. However, since the material does not contain a magnetic substance or a dielectric material, the impedance matching performance of the material is deteriorated, which is not favorable for absorption of electromagnetic waves.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A Ni/MnO/C composite nanofiber, which is characterized in that: comprises carbon nano-fiber, Ni nano-particles and MnO nano-particles attached to the carbon nano-fiber, wherein the diameter of the nano-fiber is 250-300nm, and the molar ratio of the Ni nano-particles to the MnO nano-particles is 1: 0.3-3.
2. The Ni/MnO/C composite nanofiber according to claim 1, wherein: the length of the nano fiber is 10-90 microns;
preferably, the nanofibers have a length of 30 to 80 microns.
3. The Ni/MnO/C composite nanofiber according to claim 1, wherein: the molar ratio of the Ni nanoparticles to the MnO nanoparticles is 1: 1;
furthermore, the particle size of the Ni nano-particles is 10-20 nm; the particle size of MnO nano particles is 20-40 nm.
4. The Ni/MnO/C composite nanofiber according to claim 1, wherein: the saturation magnetic susceptibility of the Ni/MnO/C composite nanofiber is 10-40emu/g, and the coercive force Hc is 25-50 Oe.
Furthermore, Ni nanoparticles and MnO nanoparticles are uniformly distributed on the surface of the carbon nanofibers.
5. The method for preparing Ni/MnO/C composite nanofibers according to any of claims 1-4, characterized in that: the method comprises the following steps:
dissolving a nickel source, a carbon source and a manganese source in an organic solvent, uniformly mixing, then carrying out electrostatic spinning to prepare a precursor, and drying, pre-oxidizing and carbonizing the precursor to prepare the Ni/MnO/C composite nanofiber.
6. The method of preparing Ni/MnO/C composite nanofibers according to claim 5, characterized in that: the nickel source is nickel acetylacetonate or nickel nitrate;
in some embodiments, the carbon source is polyvinylpyrrolidone or polyacrylonitrile;
in some embodiments, the manganese source is manganese acetylacetonate;
in some embodiments, the organic solvent is N, N-dimethylformamide.
7. The method of preparing Ni/MnO/C composite nanofibers according to claim 6, wherein: the molar ratio of the nickel source to the manganese source is 1: 3-9;
furthermore, the concentration of the nickel source in the spinning solution is 0.15-0.25 mol/L;
further, firstly, adding the phase polyvinylpyrrolidone into the N, N-dimethylformamide, stirring and dissolving until the solution is uniform and transparent, then adding the nickel acetylacetonate and the manganese acetylacetonate, and continuously mixing until the solution is uniform.
8. The method of preparing Ni/MnO/C composite nanofibers according to claim 5, characterized in that: the direct current voltage of electrostatic spinning is 10-14kV, and the spinning distance is 20-30 cm;
further, the internal temperature of the spinning machine is 35 to 45 ℃, preferably 40 ℃.
9. The method of preparing Ni/MnO/C composite nanofibers according to claim 5, characterized in that: the pre-oxidation temperature is 150-.
In some embodiments, the carbonization temperature is 600-;
further, the carbonization is carried out in H2The heating is carried out under the atmosphere, and the heating rate is 2-5 ℃/min;
furthermore, the carbonization temperature is 650-750 ℃, the reaction time is 1.8-2.2 hours, and the heating rate is 2 ℃/min.
10. Use of the Ni/MnO/C composite nanofiber as defined in any one of claims 1 to 4 as an electromagnetic wave absorbing material.
CN202111338126.6A 2021-11-12 2021-11-12 Ni/MnO/C composite nanofiber and preparation method and application thereof Pending CN113913973A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130316179A1 (en) * 2011-02-21 2013-11-28 Toyo Tanso Co., Ltd. Metal-carbon composite material and method for manufacturing same
CN103436994A (en) * 2013-08-05 2013-12-11 江苏科技大学 Fe-Ni alloy/C composite nanofiber microwave absorbent, preparation method and application of absorbent
CN103436996A (en) * 2013-08-05 2013-12-11 江苏科技大学 Ni/C composite nanofiber microwave absorbent, preparation method and application of absorbent
CN105436498A (en) * 2015-11-18 2016-03-30 山东大学 Porous nickel-carbon nano-composite microsphere electromagnetic wave absorbing material and preparation method and application thereof
CN108753251A (en) * 2018-06-14 2018-11-06 山东大学 A kind of ZnO/Co composite Nanos hollow fibre electromagnetic wave absorbent material and preparation method thereof
CN110055623A (en) * 2019-05-10 2019-07-26 陕西科技大学 A kind of high conductivity nickel carbon nanofiber flexible electrode material and preparation method thereof
CN110093686A (en) * 2019-05-27 2019-08-06 山东大学 A kind of TiO2The carbon fibre electromagnetic wave absorbent material and its preparation method and application of/Co load

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130316179A1 (en) * 2011-02-21 2013-11-28 Toyo Tanso Co., Ltd. Metal-carbon composite material and method for manufacturing same
CN103436994A (en) * 2013-08-05 2013-12-11 江苏科技大学 Fe-Ni alloy/C composite nanofiber microwave absorbent, preparation method and application of absorbent
CN103436996A (en) * 2013-08-05 2013-12-11 江苏科技大学 Ni/C composite nanofiber microwave absorbent, preparation method and application of absorbent
CN105436498A (en) * 2015-11-18 2016-03-30 山东大学 Porous nickel-carbon nano-composite microsphere electromagnetic wave absorbing material and preparation method and application thereof
CN108753251A (en) * 2018-06-14 2018-11-06 山东大学 A kind of ZnO/Co composite Nanos hollow fibre electromagnetic wave absorbent material and preparation method thereof
CN110055623A (en) * 2019-05-10 2019-07-26 陕西科技大学 A kind of high conductivity nickel carbon nanofiber flexible electrode material and preparation method thereof
CN110093686A (en) * 2019-05-27 2019-08-06 山东大学 A kind of TiO2The carbon fibre electromagnetic wave absorbent material and its preparation method and application of/Co load

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Application publication date: 20220111