CN113793924A - By using supercritical CO2Preparation of Si/Fe by fluid medium3O4Method for preparing/C composite material - Google Patents
By using supercritical CO2Preparation of Si/Fe by fluid medium3O4Method for preparing/C composite material Download PDFInfo
- Publication number
- CN113793924A CN113793924A CN202110980813.1A CN202110980813A CN113793924A CN 113793924 A CN113793924 A CN 113793924A CN 202110980813 A CN202110980813 A CN 202110980813A CN 113793924 A CN113793924 A CN 113793924A
- Authority
- CN
- China
- Prior art keywords
- ball milling
- composite material
- supercritical
- preparation
- fluid medium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- H01M4/364—Composites as mixtures
-
- 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
- H01M4/36—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
- H01M4/36—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
- H01M4/386—Silicon or alloys based on silicon
-
- 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
- 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
- H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention belongs to the field of battery materials, and discloses a method for utilizing supercritical CO2Preparation of Si/Fe by fluid medium3O4A method for preparing the/C composite material. The method comprises the following steps: (1) adding silicon powder, carbon and an iron source into a ball milling tank, adding a wet grinding agent and ball milling beads, sealing the ball milling tank, and vacuumizing; (2) pumping CO into the ball milling tank2Performing ball milling reaction on the gas in a supercritical environment to obtain Si/FeCO3a/C precursor product; (3) after the ball milling reaction is finished, collecting a product in a ball milling tank and drying to obtain a powder product; (4) sintering the powder in inert atmosphere to obtain Si/Fe3O4a/C composite material. The invention provides a novel method for preparing a silicon-carbon composite material by utilizing greenhouse gases, which has the advantages of simple process, economy, environmental protection, easy industrial implementation and the like, and the prepared Si/Fe3O4the/C composite material has excellent rate performance and cycling stability, and can be widely applied to the fields of high-performance lithium ion batteries and the like as a negative electrode material.
Description
Technical Field
The invention belongs to the field of electrode materials of batteries, and relates to a method for preparing a lithium ion battery by using supercritical CO2Preparation of Si/Fe by fluid medium3O4A method for preparing a/C composite material and application of the composite material as a negative electrode material of a lithium ion battery.
Background
The new energy automobile is a strategic industry which is mainly supported and developed by the nation, the power battery system is the heart of the new energy automobile, the energy density of the power battery at present does not completely solve the anxiety of endurance of the electric automobile, and the development of a new generation of battery anode and cathode materials is urgent. The silicon negative electrode material has extremely high theoretical capacity (4200mAh/g) and relatively low oxidation-reduction potential (<0.5V vs.Li/Li+) Is considered to be a very competitive anode material. However, the silicon negative electrode material also faces many challenges, such as poor silicon conductivity, low coulombic efficiency for the first time, large volume expansion in the charge and discharge process, fast capacity attenuation and the like, and the defects seriously limit the further application of the silicon negative electrode. Silicon-carbon compounding is an effective strategy for solving the problems, and is beneficial to improving the electrical conductivity of the silicon cathode, relieving the volume expansion of silicon and improving the electrochemical performance of the material. In addition, ferroferric oxide can effectively prevent the silicon cathode structure from collapsing and improve the silicon cathodeAnd (4) cycling stability. At reported Si @ Fe3O4In the literature of the/C composite, for example, Liu et al prepared Si @ Fe by mechanical ball milling3O4According to the method, potassium ferrate is used as a raw material, the method has strong oxidizability, is not easy to prepare and store, has potential safety risks, generates byproducts, and is not suitable for industrial production. (C.Liu, Q.Xia, C.Liao, S.Wu, Pseudo-capacitive control to Three-dimensional Micro-sized Silicon @ Fe)3O4@ Few-layerd Graphene for High-rate and Long-life Lithium Ion Batteries, Materials Today Communications,2019,18, 66-73.). Therefore, the Si @ Fe which has high efficiency, low cost, environmental protection and easy industrial production is developed3O4The preparation method of the/C composite material has important significance.
Disclosure of Invention
The invention aims to provide a method for utilizing supercritical CO2Preparation of Si/Fe by fluid medium3O4Novel method for producing/C composite material and said Si/Fe3O4The method is simple in process, efficient, environment-friendly and easy for industrial production to prepare Si/Fe3O4A novel method for preparing a/C composite material. The invention uses supercritical CO2Fluid is used as reaction medium and raw material, silicon powder, carbon and iron source are mixed by mechanical ball milling, and supercritical CO is generated in the ball milling and mixing process of silicon-carbon material2React with Fe to generate FeCO3To obtain Si/FeCO3a/C precursor product; then through thermal sintering treatment, FeCO3Further decomposed into Fe and Fe3O4Further obtaining Si/Fe3O4a/C composite material. The preparation method has simple preparation process, is economic and environment-friendly, is easy to implement industrially, and the prepared Si/Fe3O4the/C composite material has excellent electrochemical performance when being used as a lithium ion battery cathode.
The technical scheme adopted by the invention for solving the technical problems is as follows:
one of the objects of the present invention is to provide a method for utilizing supercritical CO2Preparation of Si/Fe by fluid medium3O4The preparation method of the/C composite material comprises the following steps:
(1) adding silicon powder, carbon material and iron source into a ball milling tank, adding a wet grinding agent and ball milling beads, sealing the ball milling tank, and vacuumizing;
(2) pumping CO into a sealed ball milling tank2Gas, ball milling reaction is carried out under supercritical condition to obtain Si/FeCO3a/C precursor product;
(3) after the ball milling reaction is finished, collecting a solid product in a ball milling tank and drying to obtain powder;
(4) sintering the collected powder in inert atmosphere to finally obtain Si/Fe3O4a/C composite material.
Preferably, in the step (1), the ball milling tank is a stainless steel high-pressure ball milling tank.
Preferably, in the step (1), the iron source is one or a combination of several of elementary iron, ferrous oxide, ferrocene and ferrous hydroxide.
Preferably, in the step (1), the carbon material is one or a combination of several of graphite, mesocarbon microbeads, carbon nanotubes and graphene.
Preferably, in the step (1), the silicon powder, the carbon material and the iron source are fed in a mass ratio of silicon, carbon and iron elements of 1: (0.25-5): (0.2-0.5) feeding, wherein the ball grinding bead and the material have a ball-to-material ratio of (30-100): 1.
preferably, in the step (1), the wet grinding agent is one or more of common solvents such as methanol, ethanol, isopropanol, water and the like, and more preferably, the wet grinding agent is a mixed solution of ethanol and deionized water in a volume ratio of 2: 1.
Preferably, in the step (2), the supercritical condition is CO2In supercritical CO2The fluid state condition, more preferably, the gas pressure is more than 7.3MPa, and the ball milling temperature is more than 32 ℃; more preferably, the gas pressure is 8.5MPa and the ball milling temperature is 35 ℃.
Preferably, in the step (2), the ball milling rotation speed is 300-500 rpm, and the ball milling time is 10-24 h.
Preferably, in the step (3), the treatment manner for collecting the solid product comprises filtration and washing, and more preferably, the filtration is suction filtration and the washing is alcohol washing.
Preferably, in the step (3), the drying manner is vacuum drying, and the temperature is 100-120 ℃.
Preferably, in the step (4), the inert atmosphere is one or a combination of several of nitrogen, argon and helium.
Preferably, in the step (4), the sintering temperature is 500-700 ℃ and the sintering time is 3-5 h.
Preferably, the present invention involves the following reaction:
CO2+H2O→H2CO3；
Fe+H2CO3→FeCO3+H2；
4FeCO3→Fe3O4+Fe+4CO2。
it is a second object of the present invention to provide a method for utilizing supercritical CO as described above2Preparation of Si/Fe by fluid medium3O4Si/Fe prepared by method of/C composite material3O4The application of the/C composite material as a negative electrode material of a lithium ion battery.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention provides a method for utilizing supercritical CO2Preparation of Si/Fe by fluid medium3O4The novel method of the/C composite material has the advantages of simple process, economy, environmental protection, easy industrial implementation and the like;
(2) Si/Fe prepared by the method of the invention3O4the/C composite material as the lithium ion battery cathode material has the characteristics of high specific capacity, good cycle performance and good rate performance.
Drawings
FIG. 1 is a diagram of Si/FeCO prepared in example 1 of the present invention3C precursor and Si/Fe3O4An X-ray diffraction pattern of the/C composite material;
FIG. 2 shows Si/Fe prepared in example 1 of the present invention3O4Scanning electron microscope images of the/C composite material;
FIG. 3 Si/Fe prepared according to examples 1 and 2 of the present invention3O4the/C composite material is used as a cycle performance diagram of the lithium ion battery cathode material;
FIG. 4 Si/Fe prepared according to examples 1 and 2 of the present invention3O4And the/C composite material is used as a rate performance diagram of the lithium ion battery cathode material.
Detailed Description
The technical solution of the present invention is further described below with specific embodiments and with reference to the drawings, but the scope of the present invention is not limited thereto.
The invention provides a method for utilizing supercritical CO2Preparation of Si/Fe by fluid medium3O4The preparation method of the/C composite material comprises the following steps:
(1) adding silicon powder, carbon material and iron source into a ball milling tank, adding a wet grinding agent and ball milling beads, sealing the ball milling tank, and vacuumizing;
(2) pumping CO into a sealed ball milling tank2Gas, ball milling reaction is carried out under supercritical condition to obtain Si/FeCO3a/C precursor product;
(3) after the ball milling reaction is finished, collecting a solid product in a ball milling tank and drying to obtain powder;
(4) sintering the collected powder in inert atmosphere to finally obtain Si/Fe3O4a/C composite material.
In the embodiment of the present invention, in the step (1), the ball milling tank is a stainless steel high-pressure ball milling tank.
In an embodiment of the present invention, in step (1), the iron source is one or a combination of several of elemental iron, ferrous oxide, ferrocene and ferrous hydroxide.
In an embodiment of the present invention, in the step (1), the carbon material is one or a combination of several of graphite, mesocarbon microbeads, carbon nanotubes and graphene.
In an embodiment of the invention, in the step (1), the silicon powder, the carbon material and the iron source are fed in a mass ratio of silicon, carbon and iron elements of 1: (0.25-5): (0.2-0.5), feeding, namely silicon: carbon: the iron is reasonably mixed in the ranges of 1:0.25:0.2, 1:1:0.3, 1:2:0.4, 1:3:0.5, 1:4:0.2, 1:5:0.3, 1:0.25:0.5 and the like, and the ball-material ratio of the ball grinding beads to the materials is (30-100): 1, namely the ball material ratio is 30:1, 40:1, 50:1, 60:1, 70:1, 80:1, 90:1, 100:1 and the like.
In the embodiment of the present invention, in the step (1), the wet grinding agent is one or more of a mixture of common solvents such as methanol, ethanol, isopropanol, water, and the like, and more preferably, the wet grinding agent is a mixed solution of ethanol and deionized water in a volume ratio of 2: 1.
In an embodiment of the present invention, in the step (2), the supercritical condition is CO2In supercritical CO2The fluid state condition, more preferably, the gas pressure is more than 7.3MPa, and the ball milling temperature is more than 32 ℃; more preferably, the gas pressure is 8.5MPa and the ball milling temperature is 35 ℃.
In the embodiment of the invention, in the step (2), the ball milling rotation speed is 300-500 rpm, and the ball milling time is 10-24 h.
In an embodiment of the present invention, in the step (3), the treatment manner of collecting the solid product includes filtration and washing, and more preferably, the filtration is suction filtration and the washing is alcohol washing.
In the embodiment of the present invention, in the step (3), the drying manner is vacuum drying, and the temperature is 100 ℃. about.120 ℃.
In an embodiment of the present invention, in the step (4), the inert atmosphere is one or a combination of several of nitrogen, argon and helium.
In the embodiment of the invention, in the step (4), the sintering temperature is 500-700 ℃ and the sintering time is 3-5 h.
The present invention involves the following reactions:
CO2+H2O→H2CO3；
Fe+H2CO3→FeCO3+H2；
4FeCO3→Fe3O4+Fe+4CO2。
the invention also provides a method for utilizing the supercritical CO2Preparation of Si/Fe by fluid medium3O4Si/Fe prepared by method of/C composite material3O4The application of the/C composite material as a negative electrode material of a lithium ion battery.
Example 1:
adding 0.1g of silicon powder, 0.1g of mesocarbon microbeads, 0.05g of iron powder and ball grinding beads into a ball-milling tank at a ball-material ratio of 50:1, adding 20ml of ethanol and 10ml of deionized water, sealing the ball-milling tank, and vacuumizing; introducing CO2The gas is heated to 35 ℃ to reach the supercritical fluid condition when the pressure in the ball-milling tank reaches 8MPa, the ball-milling tank is subjected to continuous ball-milling reaction for 12 hours at the rotating speed of 500rpm, and Si/FeCO is obtained3Filtering the precursor product, washing with alcohol, vacuum drying at 120 deg.c, collecting the powder product in the ball milling tank, and final drying in N2Calcining for 5h at 550 ℃ under the atmosphere protection to finally obtain Si/Fe3O4a/C composite material. FIG. 1 is a diagram of Si/FeCO prepared in example 1 of the present invention3C precursor product and Si/Fe3O4X-ray diffraction pattern of/C composite material, the main components of the composite material are Si, Fe and Fe3O4And graphitic carbon. FIG. 2 shows Si/Fe prepared in example 1 of the present invention3O4Scanning electron microscope images of the/C composite material.
And (3) adding the following components in an amount of 60: 20: weighing Si/Fe at a mass ratio of 203O4C: super-P: grinding 25% polyacrylic acid water solution uniformly, coating on copper foil to obtain electrode, using metal lithium sheet as counter electrode and electrolyte of 1mol/L LiPF6The simulated lithium ion battery (CR2025) is assembled by adopting/EC-DMC (volume ratio of 1:1) and a polypropylene microporous film as a diaphragm (Celgard 2300). FIG. 3 shows the cycle performance test of the corresponding battery in the voltage range of 0.2A/g and 0.01-3.0V, and it can be found that the composite material has excellent cycle stability, and the discharge capacity after 150 cycles is more than 1000 mAh/g. FIG. 4 is a graph of rate performance of a corresponding cell, the material being at 5The capacity of 528mAh/g still exists under the current density of A/g.
Example 2:
adding 0.1g of silicon powder, 0.4g of mesocarbon microbeads, 0.05g of ferrous oxide and ball milling beads into a ball milling tank, wherein the ball-material ratio is 100:1, adding 20ml of ethanol and 10ml of deionized water, sealing the ball milling tank, and vacuumizing; introducing CO2The gas is put into a tank, the pressure is 8MPa, the gas is heated to 35 ℃ to reach the supercritical fluid condition, the ball milling tank is continuously ball milled and reacted for 20 hours at the rotating speed of 300rpm, the powder product in the ball milling tank is collected after the suction filtration, the alcohol washing and the vacuum drying at 100 ℃, and finally the powder product is put in N2Calcining for 3h at 650 ℃ under the protection of atmosphere to finally obtain Si/Fe3O4a/C composite material.
With the resultant Si/Fe3O4the/C composite material was prepared into an electrode by the method of example 1 and assembled into a simulated lithium ion battery. FIG. 3 shows the cycle performance test of the corresponding battery in the voltage range of 0.2A/g and 0.01-3.0V, and it can be found that the composite material has excellent cycle stability, and the discharge capacity after 150 cycles is more than 800 mAh/g. Fig. 4 is a graph of rate performance of a corresponding battery, which has a capacity of 236mAh/g at a current density of 5A/g.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.
Claims (10)
1. By using supercritical CO2Preparation of Si/Fe by fluid medium3O4A method for producing a/C composite material, comprising the steps of:
(1) adding silicon powder, carbon material and iron source into a ball milling tank, adding a wet grinding agent and ball milling beads, sealing the ball milling tank, and vacuumizing;
(2) pumping CO into a sealed ball milling tank2Gas, ball milling reaction is carried out under supercritical condition to obtain Si/FeCO3a/C precursor product;
(3) after the ball milling reaction is finished, collecting a solid product in a ball milling tank and drying to obtain powder;
(4) sintering the collected powder in inert atmosphere to obtain Si/Fe3O4a/C composite material.
2. The method of claim 1, wherein the supercritical CO is utilized2Preparation of Si/Fe by fluid medium3O4A method of producing a/C composite material, characterized by: in the step (1), the iron source is one or a combination of several of simple substance iron, ferrous oxide, ferrocene and ferrous hydroxide.
3. The method of claim 1, wherein the supercritical CO is utilized2Preparation of Si/Fe by fluid medium3O4A method of producing a/C composite material, characterized by: in the step (1), the carbon material is one or a combination of several of graphite, mesocarbon microbeads, carbon nanotubes and graphene.
4. The method of claim 1, wherein the supercritical CO is utilized2Preparation of Si/Fe by fluid medium3O4A method of producing a/C composite material, characterized by: in the step (1), the silicon powder, the carbon material and the iron source are mixed according to the mass ratio of silicon, carbon and iron elements of 1: (0.25-5): (0.2-0.5) feeding.
5. The method of claim 1, wherein the supercritical CO is utilized2Preparation of Si/Fe by fluid medium3O4The method for preparing the/C composite material is characterized in that in the step (1), the wet grinding agent is one or more of methanol, ethanol, isopropanol and water.
6. The method of claim 1, wherein the supercritical CO is utilized2Preparation of Si/Fe by fluid medium3O4The method for preparing the/C composite material is characterized in that in the step (2), the supercritical condition is CO2In a supercritical state.
7. The method of claim 6, wherein the supercritical CO is used2Fluid, especially for a motor vehiclePreparation of Si/Fe by medium3O4The method for preparing the/C composite material is characterized in that in the step (2), the supercritical conditions are that the gas pressure is greater than 7.3MPa and the ball milling temperature is greater than 32 ℃.
8. The method of claim 1, wherein the supercritical CO is utilized2Preparation of Si/Fe by fluid medium3O4The method for preparing the/C composite material is characterized in that in the step (2), the ball milling rotating speed is 300-500 rpm, and the ball milling time is 10-24 hours.
9. The method of claim 1, wherein the supercritical CO is utilized2Preparation of Si/Fe by fluid medium3O4The method for preparing the/C composite material is characterized in that in the step (4), the sintering temperature is 500-700 ℃, and the sintering time is 3-5 hours.
10. Use of supercritical CO according to any one of claims 1 to 92Preparation of Si/Fe by fluid medium3O4Si/Fe prepared by method of/C composite material3O4The application of the/C composite material as a negative electrode material of a lithium ion battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110980813.1A CN113793924B (en) | 2021-08-25 | 2021-08-25 | By using supercritical CO 2 Preparation of Si/Fe by fluid medium 3 O 4 Method for preparing/C composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110980813.1A CN113793924B (en) | 2021-08-25 | 2021-08-25 | By using supercritical CO 2 Preparation of Si/Fe by fluid medium 3 O 4 Method for preparing/C composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113793924A true CN113793924A (en) | 2021-12-14 |
| CN113793924B CN113793924B (en) | 2023-03-14 |
Family
ID=79182135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110980813.1A Active CN113793924B (en) | 2021-08-25 | 2021-08-25 | By using supercritical CO 2 Preparation of Si/Fe by fluid medium 3 O 4 Method for preparing/C composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113793924B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101485969A (en) * | 2008-06-23 | 2009-07-22 | 南京工业大学 | Supercritical method for preparing nano Fe3O4/SiO2Method of compounding aerogel particles |
| CN102427129A (en) * | 2011-12-12 | 2012-04-25 | 浙江大学 | Lithium ion battery composite negative electrode material, its preparation method, negative electrode with application of material thereof and lithium ion battery |
| CN103219494A (en) * | 2013-03-31 | 2013-07-24 | 马军昌 | Preparation method of graphite-ferroferric oxide composite cathode material |
| CN103247800A (en) * | 2013-04-25 | 2013-08-14 | 西安理工大学 | Manufacturing method of positive pole lithium ferrous silicate material of lithium-ion battery |
| KR20140067236A (en) * | 2012-11-26 | 2014-06-05 | 주식회사 엘지화학 | Method for manufacturing inorganic particles and inorganic particles prepared therefrom |
| JP2015118911A (en) * | 2013-12-19 | 2015-06-25 | 深▲セン▼市貝特瑞新能源材料股▲ふん▼有限公司 | Silicon-based composite negative electrode material for lithium ion secondary batteries, manufacturing method, and battery |
| CN105845908A (en) * | 2016-04-08 | 2016-08-10 | 浙江工业大学 | Preparation method for Si-O-C composite material and application thereof |
| CN107248570A (en) * | 2017-05-26 | 2017-10-13 | 华中科技大学 | A kind of core shell structure Si/C materials, preparation method and application |
| CN107611360A (en) * | 2017-07-26 | 2018-01-19 | 华南理工大学 | Silicon monoxide graphene composite nano material, preparation method thereof and application thereof in lithium ion battery |
| CN108428884A (en) * | 2018-04-24 | 2018-08-21 | 盐城师范学院 | A kind of preparation method of sheet layer graphene and silicon electrode material |
| CN111446447A (en) * | 2020-04-03 | 2020-07-24 | 浙江长兴绿色电池科技有限公司 | Method for preparing sulfur stannide/carbon composite material by supercritical carbon dioxide fluid and application |
| CN111653734A (en) * | 2019-01-28 | 2020-09-11 | 宝生集团有限公司 | Ferrosilicon/carbon composite lithium ion battery cathode material and preparation method and application thereof |
-
2021
- 2021-08-25 CN CN202110980813.1A patent/CN113793924B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101485969A (en) * | 2008-06-23 | 2009-07-22 | 南京工业大学 | Supercritical method for preparing nano Fe3O4/SiO2Method of compounding aerogel particles |
| CN102427129A (en) * | 2011-12-12 | 2012-04-25 | 浙江大学 | Lithium ion battery composite negative electrode material, its preparation method, negative electrode with application of material thereof and lithium ion battery |
| KR20140067236A (en) * | 2012-11-26 | 2014-06-05 | 주식회사 엘지화학 | Method for manufacturing inorganic particles and inorganic particles prepared therefrom |
| CN103219494A (en) * | 2013-03-31 | 2013-07-24 | 马军昌 | Preparation method of graphite-ferroferric oxide composite cathode material |
| CN103247800A (en) * | 2013-04-25 | 2013-08-14 | 西安理工大学 | Manufacturing method of positive pole lithium ferrous silicate material of lithium-ion battery |
| JP2015118911A (en) * | 2013-12-19 | 2015-06-25 | 深▲セン▼市貝特瑞新能源材料股▲ふん▼有限公司 | Silicon-based composite negative electrode material for lithium ion secondary batteries, manufacturing method, and battery |
| CN105845908A (en) * | 2016-04-08 | 2016-08-10 | 浙江工业大学 | Preparation method for Si-O-C composite material and application thereof |
| CN107248570A (en) * | 2017-05-26 | 2017-10-13 | 华中科技大学 | A kind of core shell structure Si/C materials, preparation method and application |
| CN107611360A (en) * | 2017-07-26 | 2018-01-19 | 华南理工大学 | Silicon monoxide graphene composite nano material, preparation method thereof and application thereof in lithium ion battery |
| CN108428884A (en) * | 2018-04-24 | 2018-08-21 | 盐城师范学院 | A kind of preparation method of sheet layer graphene and silicon electrode material |
| CN111653734A (en) * | 2019-01-28 | 2020-09-11 | 宝生集团有限公司 | Ferrosilicon/carbon composite lithium ion battery cathode material and preparation method and application thereof |
| CN111446447A (en) * | 2020-04-03 | 2020-07-24 | 浙江长兴绿色电池科技有限公司 | Method for preparing sulfur stannide/carbon composite material by supercritical carbon dioxide fluid and application |
Non-Patent Citations (2)
| Title |
|---|
| CHI ZHANG ET AL.: "Preparation and magnetic properties of core–shell structured Fe-Si/Fe3O4 composites via in-situ reaction method", 《JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS》 * |
| CHUN LIU ET AL.: "Pseudocapacitance Contribution to Three-dimensional Micro-sized Silicon@Fe 3 O 4 @Few-layered graphene for High-rate and Long-life Lithium ion Batteries", 《MATERIALS TODAY COMMUNICATIONS》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113793924B (en) | 2023-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11967708B2 (en) | Lithium ion battery negative electrode material and preparation method therefor | |
| CN108598444B (en) | Vanadium trioxide/graphene composite negative electrode material of lithium ion battery and preparation method | |
| EP2891629B1 (en) | Method of producing iron oxide nanoparticles | |
| CN112421048A (en) | Method for preparing graphite-coated nano-silicon lithium battery negative electrode material at low cost | |
| CN110660987B (en) | Boron-doped hollow silicon spherical particle/graphitized carbon composite material and preparation method thereof | |
| CN112652757B (en) | Modified silicon-carbon negative electrode material and preparation method and application thereof | |
| CN116230923A (en) | Carbon-coated sodium ferric pyrophosphate cathode material and preparation method and application thereof | |
| CN114204002B (en) | Composite coating method of high-compaction high-nickel layered positive electrode material for solid-state battery | |
| GB2620047A (en) | Lithium ion battery pre-lithiation agent, preparation method therefore, and application | |
| CN103996852A (en) | Preparation method of novel nano lithium vanadium phosphate positive electrode material | |
| CN111653734A (en) | Ferrosilicon/carbon composite lithium ion battery cathode material and preparation method and application thereof | |
| CN110759379B (en) | Preparation method and application of 0D/2D heterostructure composite negative electrode material | |
| CN108550824A (en) | A kind of high-capacity battery cathode material preparation method | |
| CN113387385B (en) | Preparation method and application of two-dimensional amorphous molybdenum-based oxide composite material with oxygen-rich vacancy defects | |
| CN108598403B (en) | Method for forming binary transition metal oxide cathode material of lithium ion battery | |
| CN108539170B (en) | Method for forming nano-sheet negative electrode material of lithium ion battery | |
| CN106744776A (en) | A kind of preparation method of pure phase titanium phosphate lithium anode material | |
| CN110683589B (en) | Preparation method of cobaltosic oxide nano material | |
| CN113173606A (en) | Modification method for improving performance of lithium-rich iron-manganese-based cathode material based on density functional theory calculation | |
| Xie et al. | Cathode Properties of Na_3MPO_4CO_3 (M= Co/Ni) Prepared by a Hydrothermal Method for Na-ion Batteries | |
| CN116040611A (en) | Lithium ion battery film negative electrode material, preparation method and application | |
| CN113793924B (en) | By using supercritical CO 2 Preparation of Si/Fe by fluid medium 3 O 4 Method for preparing/C composite material | |
| CN112331812B (en) | MoO (MoO) 2 Preparation method of nanorod anode material | |
| CN111710532B (en) | Antimony trioxide-carbon nanotube composite material and preparation and application thereof | |
| CN111446454B (en) | Application of electronic compound as lithium air battery anode catalyst material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |