CN110589817A - Method for improving lithium storage capacity of graphene through introduction of organic silicon functional groups - Google Patents

Method for improving lithium storage capacity of graphene through introduction of organic silicon functional groups Download PDF

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CN110589817A
CN110589817A CN201910980555.XA CN201910980555A CN110589817A CN 110589817 A CN110589817 A CN 110589817A CN 201910980555 A CN201910980555 A CN 201910980555A CN 110589817 A CN110589817 A CN 110589817A
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graphene
organic silicon
graphene oxide
triethylamine
carboxyl
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CN110589817B (en
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周卫民
徐桂英
王坤
张学虎
王英新
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Jixi Weida New Material Technology Co Ltd
University of Science and Technology Liaoning USTL
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Jixi Weida New Material Technology Co Ltd
University of Science and Technology Liaoning USTL
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/15—Nano-sized carbon materials
    • C01B32/182—Graphene
    • C01B32/184—Preparation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/15—Nano-sized carbon materials
    • C01B32/182—Graphene
    • C01B32/184—Preparation
    • C01B32/19—Preparation by exfoliation
    • 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
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1393—Processes of manufacture of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • 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
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2204/00—Structure or properties of graphene
    • C01B2204/20—Graphene characterized by its properties
    • C01B2204/22—Electronic properties
    • 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
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • 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

The invention belongs to the field of graphene manufacturing, and particularly relates to a method for improving lithium storage capacity of graphene through introduction of an organic silicon functional group. 1) Preparing graphene oxide by a hummer method, and determining the total content mol/g of hydroxyl and carboxyl of graphene oxide in unit mass by a Boehm titration method; 2) adding graphene oxide into a tetrahydrofuran solution, adding triethylamine and trimethylchlorosilane, the contents of which are different in times of the total content of graphene oxide hydroxyl and carboxyl, after ultrasonic oscillation, keeping the addition times of the triethylamine and the trimethylchlorosilane consistent, and removing the tetrahydrofuran solution by decompression and filtration after reaction; 3) and sublimating triethylamine hydrochloride from the solid obtained by filtering by a sublimation method under direct vacuum to obtain the porous organic silicon modified graphene negative electrode material. The graphene prepared by the method has excellent hydrophobicity and conductivity, is simple in method and low in cost, and is more suitable for large-scale preparation of high-capacity lithium ion battery electrode materials.

Description

Method for improving lithium storage capacity of graphene through introduction of organic silicon functional groups
Technical Field
The invention belongs to the field of graphene manufacturing, and particularly relates to a method for improving lithium storage capacity of graphene through introduction of an organic silicon functional group.
Background
Graphene has been sought after since 2004 as an atom-thick two-dimensional carbon material due to its unique structure and special properties such as excellent mechanical strength, excellent thermal and electrical conductivity, and high chemical stability. However, recent theoretical studies indicate that lithium ions are hardly stable and diffuse in highly crystalline graphene without defects, and many studies indicate that introducing defects as active sites while maintaining the conductivity of the graphene material can promote the intercalation/deintercalation of lithium ions in the material, but the very easy re-stacking of graphene sheets limits the application thereof in lithium batteries (the stacking of graphene sheets tends to prevent the permeation of electrolyte and block Li+Stored active sites), in order to solve this problem, researchers often compound graphene with electrochemically active nanomaterials (nanostructured metal oxides, etc.) or modify graphene oxide to prepare functionalized RGO, thereby imparting good catalytic and electrochemical properties to graphene.
At present, the lithium storage capacity of graphene can be improved by the following method: 1. in-situ generation of layered SiO on GO surface2Followed by SiO removal with HF solution2And the 3D graphene structure is successfully prepared through high-temperature annealing, and the specific capacity of 606mAh/g is still obtained after the 3D graphene structure is circulated for 142 circles under the current density of 1C. 2. By the antisolvent method with H2Is a reducing agent, 3D graphene (3D-rGO) is prepared after high-temperature carbonization, and the specific capacity of 393.2mAh/g is still obtained after 180 cycles under the current density of 1.6A/g. 3. The graphene/bacteria compound is prepared by using the heteroatoms of the spacer and the doping source and using escherichia coli as a reducing agent, and the specific capacity of 505mAh/g is still obtained after the graphene/bacteria compound is circulated for 380 circles under the current density of 186 mA/g. However, these methods are effective in inhibiting the aggregation of graphene layers and improving their physical and chemical properties to some extent, but the complicated steps, severe operating conditions, and high reaction temperature greatly increase the production cost of graphene, limiting its wide application.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a method for improving the lithium storage capacity of graphene by introducing an organic silicon functional group. The graphene prepared by the method has excellent hydrophobicity and conductivity, is simple in method and low in cost, and is more suitable for large-scale preparation of high-capacity lithium ion battery electrode materials.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for improving lithium storage capacity of graphene by introducing an organic silicon functional group specifically comprises the following steps:
1) preparing graphene oxide by a hummer method, and determining the total content mol/g of hydroxyl and carboxyl of graphene oxide in unit mass by a Boehm titration method;
2) adding graphene oxide into a tetrahydrofuran solution, carrying out ultrasonic oscillation for 10-60 min, adding triethylamine and trimethylchlorosilane of different multiples of total content of hydroxyl and carboxyl of the graphene oxide, keeping the addition multiples of the content of the triethylamine and the content of the trimethylchlorosilane consistent, reacting for 12-24 h, and filtering under the pressure of-0.1-0 Mpa to remove the tetrahydrofuran solution;
3) and finally, vacuum drying the solid obtained after the organic silicon modification through filtration at the temperature of 60-200 ℃, and removing triethylamine hydrochloride generated by the modification reaction through a sublimation method to obtain the porous organic silicon modified graphene negative electrode material.
A manufacturing method of an electrode plate is characterized in that the porous organic silicon modified graphene prepared according to the method is used as a negative electrode material of a lithium battery to assemble the battery, and the manufacturing method of the electrode plate comprises the following steps:
1) dry grinding: uniformly grinding the porous organic silicon modified graphene negative electrode material, the conductive agent and the binder in an agate mortar according to the ratio of 8:1:1, wherein the conductive agent is acetylene black or SP; the binder is polyvinylidene fluoride and PVDF;
2) wet grinding: dropwise adding azomethylpyrrolidone into an agate mortar, and continuously grinding until the mixture is uniform and sticky slurry;
3) smearing: wiping a copper foil to be used with alcohol, drying, placing the ground slurry on the surface of the copper foil, and uniformly coating the slurry on the copper foil by using an automatic film coating device;
4) and (3) drying: placing the electrode slice in the air, primarily drying at 80 ℃ to remove most of NMP, and then transferring to a vacuum drying oven to dry at 120 ℃ for 12h to completely remove NMP;
5) cutting: the electrode sheet was cut into a circular piece having a diameter of 11mm using a sheet cutter.
Compared with the prior art, the invention has the beneficial effects that:
the graphene modified by the organic silane is purified by a sublimation method, so that a reaction byproduct triethylamine hydrochloride is directly removed, and a complex pore structure is formed between graphene sheet layers. The graphene prepared by the method has excellent hydrophobicity and conductivity, is simple, has low cost, and is more suitable for large-scale preparation of high-capacity lithium ion battery electrode materials.
According to the method, the organic silicon is modified by utilizing rich functional groups on the surface of the graphene oxide, and the pore structure between the stacks of the organic silicon modified graphene sheets is improved through purification by a sublimation method, so that the lithium ion diffusion capacity is improved. Experimental results show that the prepared organic silicon modified reduced graphene oxide has excellent hydrophobicity and electrical conductivity, and the existence of silane functional groups can effectively increase the pore structure between reduced graphene oxide (rGO) sheet stacks, improve the transmission of lithium ions in the graphene, and endow the material with excellent hydrophobicity, so that the adsorption of the material to water in air in the storage process is avoided, and the irreversible capacity caused by LiOH formed by adsorption of water molecules on the surface of the material in the charging and discharging process is reduced. In an experiment, the prepared silane functionalized graphene is used as an electrode material of a lithium ion battery to evaluate the lithium storage performance, and after the lithium ion battery is cycled for 100 circles under the current density of 0.1A/g, the reversible capacity of 878mAh/g is still obtained. The method is simple and low in cost, and provides a new visual angle for large-scale preparation of next-generation high-capacity lithium ion battery electrode materials.
Drawings
Fig. 1 is a flow chart for preparing an organosilicon-modified reduced graphene oxide (rGO) lithium ion battery anode material.
Fig. 2 is an XRD spectrum of the prepared organosilicon modified reduced graphene oxide (rGO) and Graphene Oxide (GO).
Fig. 3(a) is an infrared spectrum of the prepared organosilicon-modified reduced graphene oxide (rGO).
Fig. 3(b) is an infrared spectrum of the prepared Graphene Oxide (GO).
Fig. 4 is a test result of low temperature nitrogen desorption of organosilicon modified reduced graphene oxide (rGO) and Graphene Oxide (GO).
Fig. 5 is a graph of cycle performance tests of organosilicon-modified reduced graphene oxide (rGO) and Graphene Oxide (GO).
Fig. 6 is a rate capability test chart of organic silicon modified reduced graphene oxide (rGO) and Graphene Oxide (GO).
Detailed Description
The following further illustrates embodiments of the invention, but is not intended to limit the scope thereof:
a method for improving lithium storage capacity of graphene by introducing an organic silicon functional group specifically comprises the following steps:
1) preparing graphene oxide by a hummer method, and determining the total content mol/g of hydroxyl and carboxyl of graphene oxide in unit mass by a Boehm titration method;
2) adding graphene oxide into a tetrahydrofuran solution, carrying out ultrasonic oscillation for 10-60 min, adding triethylamine and trimethylchlorosilane of different multiples of total content of hydroxyl and carboxyl of the graphene oxide, keeping the addition multiples of the content of the triethylamine and the content of the trimethylchlorosilane consistent, reacting for 12-24 h, and filtering under the pressure of-0.1-0 Mpa to remove the tetrahydrofuran solution;
3) and finally, vacuum drying the solid obtained after the organic silicon modification through filtration at the temperature of 60-200 ℃, and removing triethylamine hydrochloride generated by the modification reaction through a sublimation method to obtain the porous organic silicon modified graphene negative electrode material.
The porous organic silicon modified graphene prepared according to the method is used as a negative electrode material of a lithium battery to assemble the battery, and the manufacturing method of the electrode plate comprises the following steps:
1) dry grinding: uniformly grinding the porous organic silicon modified graphene negative electrode material, the conductive agent and the binder in an agate mortar according to the ratio of 8:1:1, wherein the conductive agent is acetylene black or SP; the binder is polyvinylidene fluoride and PVDF;
2) wet grinding: dropwise adding a certain amount of azomethylpyrrolidone into an agate mortar, and continuously grinding until the mixture is uniform and sticky slurry;
3) smearing: wiping a copper foil to be used with alcohol, drying, placing the ground slurry on the surface of the copper foil, and uniformly coating the slurry on the copper foil by using an automatic film coating device;
4) and (3) drying: placing the electrode slice in the air, primarily drying at 80 ℃ to remove most of NMP, and then transferring to a vacuum drying oven to dry at 120 ℃ for 12h to completely remove NMP;
5) cutting: the electrode sheet was cut into a circular piece having a diameter of 11mm using a sheet cutter.
The graphene modified by the organic silane is purified by a sublimation method, so that a reaction byproduct triethylamine hydrochloride is directly removed, and a complex pore structure is formed between graphene sheet layers. The graphene prepared by the method has excellent hydrophobicity and conductivity, is simple, has low cost, and is more suitable for large-scale preparation of high-capacity lithium ion battery electrode materials.
According to the method, the organic silicon is modified by utilizing rich functional groups on the surface of the graphene oxide, and the pore structure between the stacks of the organic silicon modified graphene sheets is improved through purification by a sublimation method, so that the lithium ion diffusion capacity is improved. Experimental results show that the prepared organic silicon modified reduced graphene oxide has excellent hydrophobicity and electrical conductivity, and the existence of silane functional groups can effectively increase the pore structure between reduced graphene oxide (rGO) sheet stacks, improve the transmission of lithium ions in the graphene, and endow the material with excellent hydrophobicity, so that the adsorption of the material to water in air in the storage process is avoided, and the irreversible capacity caused by LiOH formed by adsorption of water molecules on the surface of the material in the charging and discharging process is reduced. In an experiment, the prepared silane functionalized graphene is used as an electrode material of a lithium ion battery to evaluate the lithium storage performance, and after the lithium ion battery is cycled for 100 circles under the current density of 0.1A/g, the reversible capacity of 878mAh/g is still obtained. The method is simple and low in cost, and provides a new visual angle for large-scale preparation of next-generation high-capacity lithium ion battery electrode materials.
[ examples ] A method for producing a compound
As shown in fig. 1, a method for improving lithium storage capacity of graphene by introducing an organosilicon functional group specifically includes the following steps:
1) preparing graphene oxide according to a hummer method, and determining the total content of hydroxyl and carboxyl of graphene oxide of unit mass to be 0.53 x 10 by adopting a Boehm titration method-3mol/g；
2) Adding 100mg of graphene oxide into 30ml of tetrahydrofuran solution, and after ultrasonic oscillation for 1 hour, respectively adding triethylamine and trimethylchlorosilane (4.8 x 10) with the total content of graphene oxide hydroxyl and carboxyl being 9 times of that of graphene oxide hydroxyl and carboxyl-3mol of trimethylchlorosilane and 4.8 x 10-3Triethylamine is mol), after 24 hours of reaction, tetrahydrofuran solution is removed by decompression and filtration;
3) removing impurities from the solid obtained by filtering by a sublimation method, and drying at 120 ℃ in vacuum to remove triethylamine hydrochloride to obtain a final sample.
And preparing electrode plates from the final sample, and assembling a button cell to test the electrochemical performance of the button cell.
The preparation steps of the electrode slice are as follows:
dry grinding: the electrode material, the conductive agent (acetylene black, SP) and the binder (polyvinylidene fluoride, PVDF) are uniformly ground in an agate mortar according to the ratio of 8:1: 1.
Wet grinding: nitrogen Methyl Pyrrolidone (NMP) is dripped into an agate mortar, and the mixture is continuously ground until the mixture becomes uniform and sticky slurry.
③ smearing: firstly, wiping a copper foil to be used by alcohol, drying, placing the ground slurry on the surface of the copper foil, and uniformly coating the slurry on the copper foil by using an automatic film coating device.
And fourthly, drying: the electrode sheet was placed in air and initially dried at 80 ℃ to remove most of the NMP, and then transferred to a vacuum oven to be dried at 120 ℃ for 12 hours to completely remove the NMP.
Cutting the pieces: the electrode sheet was cut into a circular piece having a diameter of 11mm using a sheet cutter.
After the preparation of the electrode plate is finished, a CR2032 button cell is adopted to assemble a lithium ion battery in a vacuum glove box (the water concentration is less than 0.1ppm, and the oxygen concentration is less than 0.1 ppm). The lithium ion battery counter electrode is a lithium sheet, the specific assembly sequence is a negative electrode shell, the lithium sheet, a diaphragm, 100ul of electrolyte, an electrode plate, a steel sheet, an elastic sheet and a positive electrode shell, and after the battery is assembled, the battery is kept stand for 12 hours and then is subjected to electrochemical performance test.
As shown in fig. 2, compared with the unmodified graphene oxide, the characteristic peak belonging to the graphene oxide in the reaction product purified by the organosilicon modification and sublimation method completely disappeared, and the characteristic peak belonging to the graphene was clearly observed.
As shown in FIGS. 3(a) and 3(b), the infrared test results showed that the infrared intensity was 1165-1212 cm-1Has obvious characteristic peaks belonging to the sum of-C-O-SiR. At the same time, at 2923cm-1Characteristic peaks ascribed to the hydrocarbon groups on the organosilanes are clearly observed. The above results demonstrate that organic functional groups are successfully introduced into the surface of graphene.
As shown in fig. 4, through the evaluation of the specific surface area of the graphene modified by the organic silicon in fig. 4, it is found that the pore structures of the organic silicon modified rGO obtained by removing the reaction products such as triethylamine hydrochloride by the organic silicon modification reaction and the sublimation impurity removal method are obviously developed near 4nm, 10-25 nm and 30-50 nm compared with the graphene oxide without the organic silicon modification, and it is proved that the organic silicon modified rGO obtained by introducing the organic silicon modification and the sublimation impurity removal method forms a complex pore structure in the structure of the graphene sheet stack, which provides a solid foundation for improving the lithium storage function of the modified graphene.
As shown in fig. 5, by comparing the lithium storage capacities of the graphene modified by the organic silicon and the unmodified graphene oxide in fig. 5, we can clearly see that the lithium storage capacity of the graphene modified by the organic silicon after 100 times of charge and discharge is still 878mAh/g, which is much higher than 174mAh/g of the graphene oxide without the organic silicon modification.
As shown in fig. 6, the rate performance of the graphene modified by the organic silicon is far better than that of the graphene oxide which is not modified and purified by sublimation as proved by the test result of the rate curve of fig. 6. The organic silicon modified graphene is proved to have better polarization resistance.
The above structural characterization and evaluation of lithium storage function showed that: by the synergistic effect of introducing organic silicon functional groups on the surface of graphene oxide and removing triethylamine hydrochloride after reaction through a sublimation method, the conversion of graphene oxide to organic silicon modified rGO is realized, and a complex pore structure is generated between graphene sheet layers of the prepared organic silicon modified rGO. Thereby remarkably improving the movement of lithium ions in the graphene and improving the storage capacity of the lithium ions.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (2)

1. A method for improving lithium storage capacity of graphene by introducing an organic silicon functional group is characterized by comprising the following steps:
1) preparing graphene oxide by a hummer method, and determining the total content mol/g of hydroxyl and carboxyl of graphene oxide in unit mass by a Boehm titration method;
2) adding graphene oxide into a tetrahydrofuran solution, carrying out ultrasonic oscillation for 10-60 min, adding triethylamine and trimethylchlorosilane of different multiples of total content of hydroxyl and carboxyl of the graphene oxide, keeping the addition multiples of the content of the triethylamine and the content of the trimethylchlorosilane consistent, reacting for 12-24 h, and filtering under the pressure of-0.1-0 Mpa to remove the tetrahydrofuran solution;
3) and finally, vacuum drying the solid obtained after the organic silicon modification through filtration at the temperature of 60-200 ℃, and removing triethylamine hydrochloride generated by the modification reaction through a sublimation method to obtain the porous organic silicon modified graphene negative electrode material.
2. A manufacturing method of an electrode plate, which is used for assembling a battery by using the porous organic silicon modified graphene prepared by the method of claim 1 as a negative electrode material of a lithium battery, and comprises the following steps:
1) dry grinding: uniformly grinding the porous organic silicon modified graphene negative electrode material, the conductive agent and the binder in an agate mortar according to the ratio of 8:1:1, wherein the conductive agent is acetylene black or SP; the binder is polyvinylidene fluoride and PVDF;
2) wet grinding: dropwise adding azomethylpyrrolidone into an agate mortar, and continuously grinding until the mixture is uniform and sticky slurry;
3) smearing: wiping a copper foil to be used with alcohol, drying, placing the ground slurry on the surface of the copper foil, and uniformly coating the slurry on the copper foil by using an automatic film coating device;
4) and (3) drying: placing the electrode slice in the air, primarily drying at 80 ℃ to remove NMP, and then transferring to a vacuum drying oven to dry at 120 ℃ for 12h to completely remove NMP;
5) cutting: the electrode sheet was cut into a circular piece having a diameter of 11mm using a sheet cutter.
CN201910980555.XA 2019-10-16 2019-10-16 Method for improving lithium storage capacity of graphene through introduction of organic silicon functional groups Active CN110589817B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114975949A (en) * 2022-06-13 2022-08-30 鸡西市唯大新材料科技有限公司 Preparation method of lithium ion carbon negative electrode material

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GUIYING XU ET AL.: "Development of Electrochemical Performances of Carbon Black Obtained by the Surface Organosilicon-Modified Method", 《RUSSIAN JOURNAL OF APPLIED CHEMISTRY》 *
GUO LIANG LI ET AL.: "Organo- and Water-Dispersible Graphene Oxide-Polymer Nanosheets for Organic Electronic Memory and Gold Nanocomposites", 《J.PHYS.CHEM. C》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114975949A (en) * 2022-06-13 2022-08-30 鸡西市唯大新材料科技有限公司 Preparation method of lithium ion carbon negative electrode material

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