CN110957484B - Preparation method of mace-shaped carbon nanofiber/sulfur composite material - Google Patents

Preparation method of mace-shaped carbon nanofiber/sulfur composite material Download PDF

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CN110957484B
CN110957484B CN201911283932.0A CN201911283932A CN110957484B CN 110957484 B CN110957484 B CN 110957484B CN 201911283932 A CN201911283932 A CN 201911283932A CN 110957484 B CN110957484 B CN 110957484B
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mace
sulfur
shaped carbon
composite material
carbon nanofibers
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CN110957484A (en
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刘守法
林东
王引卫
何子游
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Xijing University
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • 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
    • 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
    • D01F9/24—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624—Electric conductive fillers
    • H01M4/625—Carbon or graphite
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/021—Physical characteristics, e.g. porosity, surface area
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

A preparation method of mace-shaped carbon nanofiber/sulfur composite material comprises adopting electrostatic spinning method to synthesize mace-shaped carbon nanofiber, and combining with sulfur to prepare CNF-S composite material; the CNF-S composite material prepared by the invention has higher conductivity, and in addition, in the charge-discharge cycle process of the lithium sulfur battery, the branch opening shape on the surface of the mace-shaped carbon nanofiber provides adsorption for soluble polysulfide, so that the specific capacity and cycle performance of the battery are greatly improved.

Description

Preparation method of mace-shaped carbon nanofiber/sulfur composite material
Technical Field
The invention relates to the technical field of lithium-sulfur batteries, in particular to a preparation method of a mace-shaped carbon nanofiber/sulfur composite material.
Technical Field
The lithium-sulfur battery has the characteristics of high specific capacity (1675 mAh/g) and high energy density (2600 wh/kg), and is a research hotspot, and because the sulfur element is rich in the earth and has no pollution to the environment, the lithium-sulfur battery taking the sulfur element as the cathode and the lithium as the anode is expected to become a novel energy storage system of various next-generation electronic devices. However, there are still some problems that limit the practical application of lithium sulfur batteries: on the one hand, elemental sulfur is an electronic insulator and is difficult to transport electrons during electrochemical reactions; on the other hand, polysulfides produced by the discharge process are readily dissolved in the electrolyte, which results in severe capacity loss and poor cycle stability. These two main causes result in poor electrochemical performance of lithium sulfur batteries.
Over the past few decades, various strategies have been employed to alter the electrochemical performance of lithium sulfur batteries, and a great deal of work has been devoted to the preparation of cathode host materials suitable for elemental sulfur. In recent years, metal oxides have been designed as host materials for lithium sulfur batteries, e.g., mnO 2 、TiO 2 And SiO 2 And so on. However, it is not limited toThe specific gravity of these metal oxides in sulfur-based composites is large, resulting in a decrease in the energy density of lithium-sulfur batteries.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a preparation method of a mace-shaped carbon nanofiber/sulfur composite material, and the prepared composite material has higher conductivity and greatly improves the specific capacity and the cycle performance of a battery.
In order to achieve the purpose, the invention adopts the technical scheme that:
a preparation method of mace-shaped carbon nanofiber/sulfur composite material adopts an electrostatic spinning method to synthesize mace-shaped carbon nanofiber, and then combines the mace-shaped carbon nanofiber with sulfur to prepare CNF-S composite material, and comprises the following steps:
(1) Respectively adding 1.6g of mixture of polyacrylonitrile and polypyrrole into 20-30 ml of DMF solution, stirring for 30min, then dripping 4-6 ml of tetrahydrofuran, standing to prepare an electrospinning solution, wherein the mass ratio of polyacrylonitrile to polypyrrole in the mixture is 4 (3-5);
(2) Extracting electrospinning liquid, carrying out electrostatic spinning, collecting a sample by using an aluminum foil, wherein the voltage is 15kV, the distance between a needle head of the electrostatic spinning and the aluminum foil is 16cm, the injection flow rate is 55-65 mL/h, the temperature is 21-25 ℃, and the relative humidity is 80% to prepare a nanofiber membrane;
(3) Drying the nanofiber membrane in vacuum at 55-65 ℃ overnight to remove DMF, and heating at 300 ℃ for 4-6 h in nitrogen atmosphere to prepare mace-shaped carbon nanofibers;
(4) Mixing and grinding the mace-shaped carbon nanofibers and sulfur according to the mass ratio of 1 (3-5), then heating for 12-15 h under Ar atmosphere at 150-160 ℃, and then heating for 2h at 280-320 ℃; and cooling to room temperature to obtain the CNF-S composite material formed by jointing the mace-shaped carbon nanofibers and sulfur.
The invention has the beneficial effects that: the CNF-S composite material prepared by the invention has higher conductivity, and in addition, in the charge-discharge cycle process of the lithium sulfur battery, the branch opening shape on the surface of the mace-shaped carbon nanofiber provides adsorption for soluble polysulfide, so that the specific capacity and cycle performance of the battery are greatly improved.
Drawings
Fig. 1 is an SEM topography of the CNF-S composite prepared in example 3.
FIG. 2 is a TEM morphology and element distribution map of the CNF-S composite prepared in example 3.
Fig. 3 is an XRD pattern of the CNF-S composite prepared in example 3.
Fig. 4 is an XPS spectrum of C1S of the filamentous nanocarbon (CNF) and the CNF-S composite prepared in example 3.
Fig. 5 is a CV curve of a sulfur electrode at different scan rates.
Fig. 6 is a CV curve of the CNF-S composite electrode prepared in example 3 at different scan rates.
Fig. 7 is the electrode rate performance of the CNF-S composite prepared in example 3.
Fig. 8 is a graph of long cycle performance at 1C and 2C for the CNF-S composite prepared in example 3.
Detailed Description
The present invention will be described in detail below with reference to examples and the accompanying drawings.
Embodiment 1, a preparation method of mace-shaped carbon nanofiber/sulfur composite material, comprising the following steps:
(1) Respectively adding 1.6g of mixture of polyacrylonitrile and polypyrrole into 20ml of DMF solution, stirring for 30min, then dripping 4ml of tetrahydrofuran, standing to prepare an electrospinning solution, wherein the mass ratio of polyacrylonitrile to polypyrrole in the mixture is 4;
(2) Extracting an electrospinning solution, carrying out electrostatic spinning, collecting a sample by using an aluminum foil, wherein the voltage is 15kV, the distance between a needle head of the electrostatic spinning and the aluminum foil is 16cm, the injection flow rate is 55mL/h, the temperature is 25 ℃, and the relative humidity is 80%, so that a nanofiber membrane is prepared;
(3) Drying the nanofiber membrane in vacuum at 65 ℃ overnight to remove DMF, and heating at 300 ℃ for 4h in nitrogen atmosphere to prepare mace-shaped carbon nanofibers;
(4) Mixing and grinding the mace-shaped carbon nanofibers and sulfur in a mass ratio of 1; and cooling to room temperature to obtain the CNF-S composite material formed by jointing the mace-shaped carbon nanofibers and sulfur.
Embodiment 2, a preparation method of mace-shaped carbon nanofiber/sulfur composite material, comprising the following steps:
(1) Respectively adding 1.6g of a mixture of polyacrylonitrile and polypyrrole into 30ml of DMF (dimethyl formamide) solution, stirring for 30min, then dripping 6ml of tetrahydrofuran, and standing to prepare an electrospinning solution, wherein the mass ratio of polyacrylonitrile to polypyrrole in the mixture is 4;
(2) Extracting an electrospinning solution, carrying out electrostatic spinning, collecting a sample by using an aluminum foil, wherein the voltage is 15kV, the distance between a needle head of the electrostatic spinning and the aluminum foil is 16cm, the injection flow rate is 65mL/h, the temperature is 21 ℃, and the relative humidity is 80%, so that a nanofiber membrane is prepared;
(3) Drying the nanofiber membrane in vacuum at 55 ℃ overnight to remove DMF, and heating at 300 ℃ for 6h in nitrogen atmosphere to prepare mace-shaped carbon nanofibers;
(4) Mixing and grinding the mace-shaped carbon nanofibers and sulfur in a mass ratio of 1; and cooling to room temperature to obtain the CNF-S composite material formed by jointing the mace-shaped carbon nanofibers and sulfur.
Embodiment 3 a method for preparing mace-shaped carbon nanofiber/sulfur composite, comprising the following steps:
(1) Respectively adding 1.6g of mixture of polyacrylonitrile and polypyrrole into 20ml of DMF solution, stirring for 30min, then dripping 4ml of tetrahydrofuran, standing to prepare an electrospinning solution, wherein the mass ratio of polyacrylonitrile to polypyrrole in the mixture is 4;
(2) Extracting an electrospinning solution, carrying out electrostatic spinning, collecting a sample by using an aluminum foil, wherein the voltage is 15kV, the distance between a needle head of the electrostatic spinning and the aluminum foil is 16cm, the injection flow rate is 60mL/h, the temperature is 25 ℃, and the relative humidity is 80%, so that a nanofiber membrane is prepared;
(3) Drying the nanofiber membrane in vacuum at 60 ℃ overnight to remove DMF, and heating at 300 ℃ for 5 hours under nitrogen atmosphere to prepare mace rod-shaped carbon nanofibers;
(4) Mixing and grinding the mace-shaped carbon nanofibers and sulfur in a mass ratio of 1; and cooling to room temperature to obtain the CNF-S composite material formed by jointing the mace-shaped carbon nanofibers and sulfur.
Referring to fig. 1, fig. 1 is an SEM image of the CNF-S composite material prepared in example 3, and the prepared carbon nanofibers have a mace-shaped nano structure with a rod-shaped diameter in the range of 100-110 nm.
Referring to fig. 2, fig. 2 is a TEM morphology and element distribution diagram of the CNF-S composite material prepared in example 3, and the surface of the CNF-S composite material is composed of many branches, which is beneficial for the transmission of electrons as the cathode material of the energy storage system. To further demonstrate the distribution of sulfur in the carbon nanofiber structure, energy spectroscopy was performed. The corresponding element distribution confirms a homogeneous distribution of the elements C and S in the CNF-S composite.
Referring to fig. 3, fig. 3 is an XRD pattern of the CNF-S composite material prepared in example 3, and the prepared filamentous nanocarbon has a typical carbon diffraction peak. Elemental sulfur has a monoclinic structure with typical sulfur diffraction peaks. The diffraction peak of the prepared CNF-S composite material is more than that of the original sulfur, and the diffraction peak of carbon is increased, which shows that a layer of sulfur is coated on the surface of the CNF.
Referring to fig. 4, fig. 4 is an XPS spectrum of the carbon nanofibers and C1S of the CNF-S composite prepared in example 3. For the original Carbon Nanofibers (CNF), the diffraction peaks at 284.5ev and 286.1ev correspond to C = C and C-C bonds, respectively, which is consistent with other reports. The CNF-S composite material has one more diffraction peak at 288.6eV, which is caused by the existence of C-S bond in the CNF-S composite material, and shows that C and S are combined.
The CNF-S composite prepared in example 3, super P-carbon, and PVDF were mixed in a weight ratio of 92. Then, the electrode paste was uniformly coated on an aluminum foil, dried at 60 ℃ for 24 hours, and the dried electrode aluminum foil was cut into circular electrodes having a diameter of 15 mm. Assembled into a CR2032 button cell, which was tested for electrochemical performance. In the button cell, the prepared aluminum foil with the CNF-S composite material is used as a positive electrode, and a lithium foil is used as a negative electrode. The electrolyte is 1mol/L of LITFSI, wherein DOL is DME = 1. Electrochemical performance tests were performed using a battery test system model LAND-CT2001A and an electrochemical station model CHI 660E.
Referring to fig. 5, fig. 5 is a CV curve of the sulfur electrode at different scan rates, two reduction peaks and one oxidation peak, located at 2.3V, 2.1V and 2.5V, respectively, can be observed, indicating that sulfur is first converted to polysulfide and Li 2 S, then converted to elemental sulfur. Furthermore, as the scan rate increases, the peak value also decreases.
Referring to fig. 6, fig. 6 is a CV curve of the CNF-S composite electrode prepared in example 3 at different scan rates, showing a similar CV curve as a pure sulfur electrode, but a much higher peak current than the pure sulfur electrode, showing a higher conductivity.
The rate capability of the CNF-S composite electrode prepared in example 3 is shown in fig. 7, and the specific capacities of the pure sulfur electrode and the CNF-S composite electrode under different current densities are shown. The prepared CNF-S composite material still has higher specific capacity under the condition that the current density is 1C and 2C, when the current density is 0.1C, the capacity is recovered to the initial capacity value, and for a pure sulfur electrode, the capacity value is rapidly attenuated along with the increase of the current density, and the poor rate performance is shown.
Fig. 8 shows the long cycle performance at 1C and 2C for the CNF-S composite prepared in example 3, respectively. The capacity of the CNF-S composite material is still maintained at 826mAh/g after 200 cycles, and the capacity retention rate is 92%. Even at high current densities, the capacity retention after 200 cycles was as high as 82%. This is because the CNF-S composite has excellent adsorption properties. Both the coulomb efficiency and the coulomb efficiency reach about 98 percent.

Claims (4)

1. A preparation method of mace-shaped carbon nanofiber/sulfur composite material is characterized by comprising the following steps: synthesizing mace-shaped carbon nanofibers by an electrostatic spinning method, and then combining the mace-shaped carbon nanofibers with sulfur to prepare the CNF-S composite material, wherein the CNF-S composite material comprises the following steps:
(1) Respectively adding 1.6g of mixture of polyacrylonitrile and polypyrrole into 20-30 ml of DMF solution, stirring for 30min, then dripping 4-6 ml of tetrahydrofuran, standing to prepare an electrospinning solution, wherein the mass ratio of polyacrylonitrile to polypyrrole in the mixture is 4 (3-5);
(2) Extracting electrospinning solution, performing electrostatic spinning, collecting a sample by using an aluminum foil, wherein the voltage is 15kV, the distance between a needle of the electrostatic spinning and the aluminum foil is 16cm, the injection flow rate is (55-65) mL/h, the temperature is 21-25 ℃, and the relative humidity is 80 percent, so as to prepare a nanofiber membrane;
(3) Drying the nanofiber membrane in vacuum at 55-65 ℃ overnight to remove DMF, and heating at 300 ℃ for 4-6 h in nitrogen atmosphere to prepare mace-shaped carbon nanofibers;
(4) Mixing and grinding the mace-shaped carbon nanofibers and sulfur according to the mass ratio of 1 (3-5), heating for 12-15 h at 150-160 ℃ in Ar atmosphere, and then heating for 2h at 280-320 ℃; and cooling to room temperature to obtain the CNF-S composite material formed by jointing the mace-shaped carbon nanofibers and sulfur.
2. The preparation method of mace-shaped filamentous nanocarbon/sulfur composite material as claimed in claim 1, comprising the steps of:
(1) Respectively adding 1.6g of mixture of polyacrylonitrile and polypyrrole into 20ml of DMF solution, stirring for 30min, then dripping 4ml of tetrahydrofuran, standing to prepare an electrospinning solution, wherein the mass ratio of polyacrylonitrile to polypyrrole in the mixture is 4;
(2) Extracting an electrospinning solution, carrying out electrostatic spinning, collecting a sample by using an aluminum foil, wherein the voltage is 15kV, the distance between a needle head of the electrostatic spinning and the aluminum foil is 16cm, the injection flow rate is 55mL/h, the temperature is 25 ℃, and the relative humidity is 80%, so that a nanofiber membrane is prepared;
(3) Drying the nanofiber membrane in vacuum at 65 ℃ overnight to remove DMF, and heating at 300 ℃ for 4h in nitrogen atmosphere to prepare mace-shaped carbon nanofibers;
(4) Mixing and grinding the mace-shaped carbon nanofibers and sulfur in a mass ratio of 1; and cooling to room temperature to obtain the CNF-S composite material formed by jointing the mace-shaped carbon nanofibers and sulfur.
3. The preparation method of mace-shaped filamentous nanocarbon/sulfur composite material as claimed in claim 1, comprising the steps of:
(1) Respectively adding 1.6g of mixture of polyacrylonitrile and polypyrrole into 30ml of DMF solution, stirring for 30min, then dripping 6ml of tetrahydrofuran, standing to prepare an electrospinning solution, wherein the mass ratio of polyacrylonitrile to polypyrrole in the mixture is 4;
(2) Extracting an electrospinning solution, carrying out electrostatic spinning, collecting a sample by using an aluminum foil, wherein the voltage is 15kV, the distance between a needle head of the electrostatic spinning and the aluminum foil is 16cm, the injection flow rate is 65mL/h, the temperature is 21 ℃, and the relative humidity is 80%, so that a nanofiber membrane is prepared;
(3) Drying the nanofiber membrane in vacuum at 55 ℃ overnight to remove DMF, and heating at 300 ℃ for 6h in nitrogen atmosphere to prepare mace-shaped carbon nanofibers;
(4) Mixing and grinding the mace-shaped carbon nanofibers and sulfur in a mass ratio of 1; and cooling to room temperature to obtain the CNF-S composite material formed by jointing the mace-shaped carbon nanofibers and sulfur.
4. The preparation method of mace-shaped filamentous nanocarbon/sulfur composite material as claimed in claim 1, comprising the steps of:
(1) Respectively adding 1.6g of mixture of polyacrylonitrile and polypyrrole into 20ml of DMF solution, stirring for 30min, then dripping 4ml of tetrahydrofuran, standing to prepare an electrospinning solution, wherein the mass ratio of polyacrylonitrile to polypyrrole in the mixture is 4;
(2) Extracting an electrospinning solution, carrying out electrostatic spinning, collecting a sample by using an aluminum foil, wherein the voltage is 15kV, the distance between a needle head of the electrostatic spinning and the aluminum foil is 16cm, the injection flow rate is 60mL/h, the temperature is 25 ℃, and the relative humidity is 80%, so that a nanofiber membrane is prepared;
(3) Drying the nanofiber membrane in vacuum at 60 ℃ overnight to remove DMF, and heating at 300 ℃ for 5 hours under nitrogen atmosphere to prepare mace rod-shaped carbon nanofibers;
(4) Mixing and grinding the mace-shaped carbon nanofibers and sulfur in a mass ratio of 1; and cooling to room temperature to obtain the CNF-S composite material formed by jointing the mace-shaped carbon nanofibers and sulfur.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108682816A (en) * 2018-05-18 2018-10-19 华中科技大学 A kind of high face carrying capacity lithium sulphur composite positive pole and preparation method thereof
CN109004205A (en) * 2018-08-07 2018-12-14 河北工业大学 A kind of preparation method of lithium sulfur battery anode material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108682816A (en) * 2018-05-18 2018-10-19 华中科技大学 A kind of high face carrying capacity lithium sulphur composite positive pole and preparation method thereof
CN109004205A (en) * 2018-08-07 2018-12-14 河北工业大学 A kind of preparation method of lithium sulfur battery anode material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Fabrication of carbon nanofiber-driven electrodes from electrospun;Liwen Ji等;《Journal of Power Sources》;20091020;全文 *

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