CN111204735A - Preparation method and application of carbon fluoride material - Google Patents
Preparation method and application of carbon fluoride material Download PDFInfo
- Publication number
- CN111204735A CN111204735A CN202010047718.1A CN202010047718A CN111204735A CN 111204735 A CN111204735 A CN 111204735A CN 202010047718 A CN202010047718 A CN 202010047718A CN 111204735 A CN111204735 A CN 111204735A
- Authority
- CN
- China
- Prior art keywords
- carbon
- carbon fluoride
- producing
- fluoride material
- combination
- 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
-
- 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
- C01B32/10—Carbon fluorides, e.g. [CF]nor [C2F]n
-
- 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
- H01M4/5835—Comprising fluorine or fluoride salts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/14—Cells with non-aqueous electrolyte
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
Abstract
The invention discloses a preparation method of a carbon fluoride material, which comprises the following steps: s1, weighing 70-98% of hard carbon raw material and 2-30% of graphite carbon material by mass, mixing in a solvent, uniformly stirring, and sintering at 300-2800 ℃ in a protective atmosphere for 1-24 hours to obtain a pretreatment material; s2, grinding the pretreatment material obtained in the step S1 and preparing a powdery product; s3, putting the powdery product obtained in the step S2 into fluorination equipment, introducing fluorination gas, keeping the pressure at 90-120 kPa, and reacting at 350-450 ℃ for 8-16 h to obtain the carbon fluoride material. The carbon fluoride material prepared by the invention has high specific power and high specific energy, can realize discharge under the current of 30A/g, has the specific energy of more than 500 Wh/kg and the specific power of more than 41000W/kg, and can be applied to the anode material of the lithium carbon fluoride battery.
Description
Technical Field
The invention belongs to the field of electrochemical energy storage of power supply technology, and particularly relates to a preparation method and application of a carbon fluoride material.
Background
When the carbon fluoride is used as the positive electrode material of the lithium primary battery, the theoretical specific energy of mass is as high as 2180 Wh kg-1, and the carbon fluoride is the commercial lithium primary battery material with the highest theoretical specific energy at present. The lithium fluorocarbon battery is widely applied to various civil and military fields such as electronic radio frequency identification systems, cardiac pacemakers, missile ignition systems, small satellites or space weapons and the like for maneuvering orbital transfer launching, kinetic energy interception missiles, space stations and the like. The specific energy of the carbon fluoride material is determined by the fluorination degree of the material, the higher the fluorination degree is, the higher the theoretical specific energy is, but the higher the fluorination degree is, the poorer the electronic conductance of the material is, when the fluorine-carbon ratio is close to 1, the carbon fluoride is equivalent to an electronic insulator, the large-rate discharge performance of the material is limited, the specific capacity and the rate performance are mutually restricted, and the two are difficult to simultaneously achieve the optimization.
In order to improve the rate capability of carbon fluoride materials, researchers have developed various material modification approaches. For example, the measure of coating the surface with the high-conductivity material plays a certain role in improving the rate capability of the material. The direct addition of highly conductive carbon nanotubes, graphene, and the like in the positive electrode formulation is also a traditional modification measure. In addition, it is also a way to improve the discharge performance of the material by compounding a second phase positive electrode active material having a good rate capability or a higher discharge voltage with carbon fluoride. However, the methods are difficult to achieve the optimization of the specific capacity and the rate capability of the carbon fluoride material at the same time, and how to achieve the property of high specific energy while obtaining the performance of high specific power puts requirements on the structural design of the carbon fluoride material.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a method for producing a carbon fluoride material having both high specific power and high specific energy, and use thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a method for preparing a carbon fluoride material, comprising the steps of:
s1, weighing 70-98% of hard carbon raw material and 2-30% of graphite carbon material by mass, mixing in a solvent, uniformly stirring, and sintering at 300-2800 ℃ in a protective atmosphere for 1-24 hours to obtain the pretreatment material.
S2, grinding the pretreatment material obtained in the step S1 and preparing a powdery product.
S3, putting the powdery product obtained in the step S2 into fluorination equipment, introducing fluorination gas, keeping the pressure at 90-120 kPa, and reacting at 350-450 ℃ for 8-16 h to obtain the carbon fluoride material.
Further, in the step S2, the pretreatment material is ground until the particle size reaches below 60 um, and then the powder is sequentially sieved through a 200-mesh sieve, a 400-mesh sieve and a 800-mesh sieve to obtain a powdery product.
Further, the fluorocarbon material prepared in step S3 has a fluorocarbon ratio of 0.7 to 1.0.
Further, the hard carbon raw material is one or a combination of acetylene black, Super P, glucose, sucrose, cellulose, a metal organic framework material, ionic liquid, starch, a high molecular polymer and resin.
Wherein the starch is one or more of potato starch, corn starch, wheat starch, sweet potato starch and arrowroot starch. The high molecular polymer is one or a combination of polyacrylonitrile, polyaniline, polyvinylpyrrolidone, polypyrrole and polyvinyl chloride. The resin is one or the combination of more of phenolic resin, epoxy resin, polyfurfuryl alcohol resin and polyvinyl alcohol resin.
Further, the graphite-like carbon material is one or a combination of natural graphite, artificial graphite, graphene and carbon nanotubes.
Further, the solvent is one or more of water, ethanol, acetone, methyl methacrylate, butyl acrylate, acrylic acid, isopropanol, butyl glycol ether, tetrahydrofuran, benzene, toluene, xylene and dimethylformamide.
Further, the protective atmosphere is one or a combination of nitrogen, argon, neon and helium.
Further, the fluoridizing gas is one or a combination of more of xenon difluoride, nitrogen trifluoride, fluorine gas, boron trifluoride and mixed gas of fluorine gas and argon gas.
The invention also discloses an application of the carbon fluoride material prepared by the preparation method in preparation of a lithium carbon fluoride battery.
The invention has the following beneficial effects: the carbon fluoride material prepared by the preparation method has high specific power and high specific energy, can realize discharge under the current of 30A/g, has the specific energy of more than 500 Wh/kg and the specific power of more than 41000W/kg, and can be applied to the anode material of the lithium carbon fluoride battery.
Drawings
FIG. 1 is a diagram illustrating the electrochemical performance test results of the carbon fluoride material prepared in the first embodiment.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
Example one
A method for preparing a carbon fluoride material, comprising the steps of:
the method comprises the following steps: according to the mass ratio of the hard carbon raw material sucrose to the graphene material of 98%: 2 percent, mixing the sucrose material and the graphene material in a deionized water solvent, adding a little ethanol solvent, uniformly stirring, and sintering for 8 hours at 800 ℃ in a protective atmosphere to obtain the pretreatment material.
And step two, grinding the pretreated product obtained in the step one until the particle size reaches below 60 microns, and sequentially sieving the ground product with 200-mesh, 400-mesh and 800-mesh sieves to obtain a powdery product.
Step three: and (3) putting the powder material obtained in the step two into fluorination equipment, introducing a fluorination gas NF3, keeping the pressure at 100kPa, and reacting for 12 h at 430 ℃ to obtain the carbon fluoride material with the bulk phase containing grapheme carbon and the fluorine-carbon ratio of 0.85.
The carbon fluoride material prepared by the method is used as a lithium battery anode material to be assembled into a button cell to be tested for electrochemical performance: (1) the working electrode is a bulk phase containing graphene carbon, the mass ratio of the carbon fluoride to the acetylene black to the polyvinylidene fluoride is 0.85, and the mass ratio of the carbon fluoride to the acetylene black to the polyvinylidene fluoride is 8: 1: 1, mixing materials; (2) the counter electrode is a lithium metal sheet; (3) the electrolyte is 1M lithium tetrafluoroborate solution dissolved in ethylene carbonate and dimethyl carbonate (volume ratio is 1: 1); (4) the discharge cut-off voltage is 1.5V; 5) the discharge current was 30A/g.
The performance results obtained from the above tests are shown in FIG. 1, and the material shows excellent rate performance, discharge to 1.5V at 30A/g, discharge time of 48 s, specific energy of 709 Wh/kg, and specific power of 53175W/kg.
Example two
A method for preparing a carbon fluoride material, comprising the steps of:
the method comprises the following steps: according to the mass ratio of the hard carbon raw material sucrose to the graphene material of 70%: 30 percent, mixing the sucrose material and the graphene material in a deionized water solvent, adding a little ethanol solvent, uniformly stirring, and sintering for 24 hours at the temperature of 300 ℃ in a protective atmosphere to obtain the pretreatment material.
And step two, grinding the pretreated product obtained in the step one until the particle size reaches below 60 microns, and sequentially sieving the ground product with 200-mesh, 400-mesh and 800-mesh sieves to obtain a powdery product.
Step three: and (3) putting the powder material obtained in the step two into fluorination equipment, introducing a fluorination gas NF3, keeping the pressure at 90KPa, and reacting for 8 hours at 350 ℃ to obtain the carbon fluoride material with the bulk phase containing grapheme carbon and the fluorine-carbon ratio of 0.75.
The carbon fluoride material prepared in the embodiment is tested, and the material shows excellent rate performance, and is discharged to 1.5V at 30A/g, the discharge time is 45 s, the specific energy is 520 Wh/kg, and the specific power is 41600W/kg.
EXAMPLE III
A method for preparing a carbon fluoride material, comprising the steps of:
the method comprises the following steps: according to the mass ratio of the hard carbon raw material sucrose to the graphene material of 85%: 15 percent, mixing the sucrose material and the graphene material in a deionized water solvent, adding a little ethanol solvent, uniformly stirring, and sintering for 1 hour at 2800 ℃ in a protective atmosphere to obtain the pretreatment material.
And step two, grinding the pretreated product obtained in the step one until the particle size reaches below 60 microns, and sequentially sieving the ground product with 200-mesh, 400-mesh and 800-mesh sieves to obtain a powdery product.
Step three: and (3) putting the powder material obtained in the step two into fluorination equipment, introducing a fluorination gas NF3, keeping the pressure at 120kPa, and reacting for 10 hours at 450 ℃ to obtain the carbon fluoride material with the bulk phase containing grapheme carbon and the fluorine-carbon ratio of 0.8.
The carbon fluoride material prepared in the embodiment is tested, and the material shows excellent rate performance, and is discharged to 1.5V at 30A/g, the discharge time is 47 s, the specific energy is 601 Wh/kg, and the specific power is 46034W/kg.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method for producing a carbon fluoride material, characterized by comprising the steps of:
s1, weighing 70-98% of hard carbon raw material and 2-30% of graphite carbon material by mass, mixing in a solvent, uniformly stirring, and sintering at 300-2800 ℃ in a protective atmosphere for 1-24 hours to obtain a pretreatment material;
s2, grinding the pretreatment material obtained in the step S1 and preparing a powdery product;
s3, putting the powdery product obtained in the step S2 into fluorination equipment, introducing fluorination gas, keeping the pressure at 90-120 kPa, and reacting at 350-450 ℃ for 8-16 h to obtain the carbon fluoride material with the fluorine-carbon ratio of 0.7-1.0.
2. The method for producing a carbon fluoride material according to claim 1, wherein: in the step S2, the pretreatment material is ground until the particle size is below 60 um, and then the powder is sequentially sieved by a 200-mesh sieve, a 400-mesh sieve and a 800-mesh sieve to obtain a powdery product.
3. The method for producing a carbon fluoride material according to claim 1, wherein: the fluorocarbon material prepared in the step S3 has a fluorine-carbon ratio of 0.7-1.0.
4. The method for producing a carbon fluoride material according to claim 1, wherein: the hard carbon raw material is one or a combination of acetylene black, Super P, glucose, sucrose, cellulose, a metal organic framework material, ionic liquid, starch, a high molecular polymer and resin.
5. The method for producing a carbon fluoride material according to claim 4, wherein: the starch is one or a combination of more of potato starch, corn starch, wheat starch, sweet potato starch and arrowroot starch, the high molecular polymer is one or a combination of more of polyacrylonitrile, polyaniline, polypyrrolidone, polypyrrole and polyvinyl chloride, and the resin is one or a combination of more of phenolic resin, epoxy resin, polyfurfuryl alcohol resin and polyvinyl alcohol resin.
6. The method for producing a carbon fluoride material according to claim 1, wherein: the graphite carbon material is one or a combination of natural graphite, artificial graphite, graphene and carbon nanotubes.
7. The method for producing a carbon fluoride material according to claim 1, wherein: the solvent is one or more of water, ethanol, acetone, methyl methacrylate, butyl acrylate, acrylic acid, isopropanol, ethylene glycol butyl ether, tetrahydrofuran, benzene, toluene, xylene and dimethylformamide.
8. The method for producing a carbon fluoride material according to claim 1, wherein: the protective atmosphere is one or a combination of more of nitrogen, argon, neon and helium.
9. The method for producing a carbon fluoride material according to claim 1, wherein: the fluoridizing gas is one or a combination of more of xenon difluoride, nitrogen trifluoride, fluorine gas, boron trifluoride and fluorine gas and argon gas mixed gas.
10. Use of the carbon fluoride material produced by the production method according to any one of claims 1 to 9 for producing a lithium carbon fluoride cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010047718.1A CN111204735B (en) | 2020-01-16 | 2020-01-16 | Preparation method and application of carbon fluoride material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010047718.1A CN111204735B (en) | 2020-01-16 | 2020-01-16 | Preparation method and application of carbon fluoride material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111204735A true CN111204735A (en) | 2020-05-29 |
| CN111204735B CN111204735B (en) | 2021-07-27 |
Family
ID=70785412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010047718.1A Active CN111204735B (en) | 2020-01-16 | 2020-01-16 | Preparation method and application of carbon fluoride material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111204735B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111969201A (en) * | 2020-08-21 | 2020-11-20 | 天津大学 | Preparation method of fluorine-doped phenolic resin-based hard carbon negative electrode material |
| CN113422059A (en) * | 2021-06-17 | 2021-09-21 | 贵州梅岭电源有限公司 | High-voltage carbon fluoride composite cathode material and preparation method thereof |
| CN113912042A (en) * | 2021-11-22 | 2022-01-11 | 郑州大学 | Method for preparing carbon nano tube from perfluorocarbon generated by aluminum electrolysis |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5139597A (en) * | 1974-10-01 | 1976-04-02 | Nippon Carbon Co Ltd | Futsukakokuenno seizoho |
| US4386137A (en) * | 1981-09-10 | 1983-05-31 | Nobuatsu Watanabe | Process for producing a graphite fluoride type film on the surface of an aluminum substrate |
| EP0247434A1 (en) * | 1986-05-19 | 1987-12-02 | Allied Corporation | Lithium/fluorinated carbon battery with no voltage delay at the beginning of the discharge |
| US4737423A (en) * | 1985-12-30 | 1988-04-12 | Allied Corporation | Cathode active material for metal of CFX battery |
| WO2006037989A1 (en) * | 2004-10-04 | 2006-04-13 | C-Tech Innovation Limited | Method of production of fluorinated carbon nanostructures |
| CN101390234A (en) * | 2006-02-21 | 2009-03-18 | 加州理工学院 | Electrochemistry of carbon subfluorides |
| CN104701547A (en) * | 2013-12-10 | 2015-06-10 | 上海空间电源研究所 | Preparation method of carbon fluoride, application of obtained carbon fluoride, and primary lithium battery |
| CN106159268A (en) * | 2016-09-21 | 2016-11-23 | 贵州梅岭电源有限公司 | A kind of preparation method of modified fluorinated carbon positive electrode |
| CN107082424A (en) * | 2017-05-12 | 2017-08-22 | 厦门希弗新能源科技有限公司 | A kind of fluorinated graphene and its preparation method and application |
| CN108123134A (en) * | 2016-11-28 | 2018-06-05 | 中国科学院大连化学物理研究所 | A kind of porous fluorinated carbon material of Heteroatom doping and preparation method thereof |
| CN109461923A (en) * | 2018-11-13 | 2019-03-12 | 山东重山光电材料股份有限公司 | A kind of lithium primary battery compound fluorocarbons positive electrode and its preparation method and application |
| JP2019077595A (en) * | 2017-10-25 | 2019-05-23 | 株式会社豊田中央研究所 | Fluorographene and production method of the same, composite material, lithium secondary battery, optical component, electronics component and gas barrier film |
| CN110395713A (en) * | 2019-06-21 | 2019-11-01 | 黄有桂 | A kind of fluorinated carbon material large-scale preparation method |
| EP3371845B1 (en) * | 2015-10-28 | 2019-12-25 | Samsung Electronics Co., Ltd. | Electrode, battery, and method for manufacturing electrode |
-
2020
- 2020-01-16 CN CN202010047718.1A patent/CN111204735B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5139597A (en) * | 1974-10-01 | 1976-04-02 | Nippon Carbon Co Ltd | Futsukakokuenno seizoho |
| US4386137A (en) * | 1981-09-10 | 1983-05-31 | Nobuatsu Watanabe | Process for producing a graphite fluoride type film on the surface of an aluminum substrate |
| US4737423A (en) * | 1985-12-30 | 1988-04-12 | Allied Corporation | Cathode active material for metal of CFX battery |
| EP0247434A1 (en) * | 1986-05-19 | 1987-12-02 | Allied Corporation | Lithium/fluorinated carbon battery with no voltage delay at the beginning of the discharge |
| WO2006037989A1 (en) * | 2004-10-04 | 2006-04-13 | C-Tech Innovation Limited | Method of production of fluorinated carbon nanostructures |
| CN101390234A (en) * | 2006-02-21 | 2009-03-18 | 加州理工学院 | Electrochemistry of carbon subfluorides |
| CN104701547A (en) * | 2013-12-10 | 2015-06-10 | 上海空间电源研究所 | Preparation method of carbon fluoride, application of obtained carbon fluoride, and primary lithium battery |
| EP3371845B1 (en) * | 2015-10-28 | 2019-12-25 | Samsung Electronics Co., Ltd. | Electrode, battery, and method for manufacturing electrode |
| CN106159268A (en) * | 2016-09-21 | 2016-11-23 | 贵州梅岭电源有限公司 | A kind of preparation method of modified fluorinated carbon positive electrode |
| CN108123134A (en) * | 2016-11-28 | 2018-06-05 | 中国科学院大连化学物理研究所 | A kind of porous fluorinated carbon material of Heteroatom doping and preparation method thereof |
| CN107082424A (en) * | 2017-05-12 | 2017-08-22 | 厦门希弗新能源科技有限公司 | A kind of fluorinated graphene and its preparation method and application |
| JP2019077595A (en) * | 2017-10-25 | 2019-05-23 | 株式会社豊田中央研究所 | Fluorographene and production method of the same, composite material, lithium secondary battery, optical component, electronics component and gas barrier film |
| CN109461923A (en) * | 2018-11-13 | 2019-03-12 | 山东重山光电材料股份有限公司 | A kind of lithium primary battery compound fluorocarbons positive electrode and its preparation method and application |
| CN110395713A (en) * | 2019-06-21 | 2019-11-01 | 黄有桂 | A kind of fluorinated carbon material large-scale preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 邹艳红等: "固相法合成氟化石墨与氟化碳新工艺的研究 ", 《湖南大学学报(自然科学版)》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111969201A (en) * | 2020-08-21 | 2020-11-20 | 天津大学 | Preparation method of fluorine-doped phenolic resin-based hard carbon negative electrode material |
| CN113422059A (en) * | 2021-06-17 | 2021-09-21 | 贵州梅岭电源有限公司 | High-voltage carbon fluoride composite cathode material and preparation method thereof |
| CN113912042A (en) * | 2021-11-22 | 2022-01-11 | 郑州大学 | Method for preparing carbon nano tube from perfluorocarbon generated by aluminum electrolysis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111204735B (en) | 2021-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111170303B (en) | Preparation method and application of carbon fluoride material | |
| CN111204735B (en) | Preparation method and application of carbon fluoride material | |
| CN111170302B (en) | Preparation method and application of carbon fluoride material | |
| CN108155383B (en) | Binder for lithium-sulfur battery, preparation method of binder and lithium-sulfur battery anode | |
| EP2660900B1 (en) | Conductive polymer materials and preparing method and uses thereof | |
| CN109004220B (en) | Boric acid compound modified lithium ion battery silicon cathode and preparation method thereof | |
| CN109768282B (en) | Water-based composite adhesive and application thereof | |
| CN112234202A (en) | High-performance lithium carbon fluoride battery and preparation method thereof | |
| CN103972508B (en) | A kind of inorganic doping/coating modification native graphite, preparation method and application thereof | |
| CN108470910B (en) | Crosslinking type composite adhesive, application thereof, lithium ion battery negative electrode material prepared based on crosslinking type composite adhesive and preparation method | |
| CN109728303B (en) | Water-based conductive binder suitable for silicon-based negative electrode material of lithium ion battery and preparation method thereof | |
| CN112234191A (en) | Electrode active material, preparation method and lithium primary battery | |
| CN116654895A (en) | Phosphorus-tin co-doped hard carbon negative electrode material and preparation method thereof | |
| CN113285067B (en) | Positive electrode composite material for lithium primary battery and preparation method thereof | |
| CN105406075A (en) | Modified sulfur positive electrode nanometer paste of lithium sulfur battery, preparation method of modified sulfur positive electrode nanometer paste, and preparation method for modified sulfur positive electrode plate of lithium sulfur battery | |
| CN111092206B (en) | CeO (CeO) 2 Preparation method of lithium-sulfur battery made of TpBD/S material | |
| CN112723420A (en) | Preparation method of lithium battery composite positive electrode material and application of lithium battery composite positive electrode material in lithium battery | |
| CN109755518B (en) | Preparation method of carbon-coated lithium iron phosphate material | |
| CN109021231B (en) | Modified polydopamine material and application thereof | |
| CN109928393B (en) | Preparation method and application of porous two-dimensional transition metal carbide | |
| CN115207335A (en) | Low-temperature chargeable and dischargeable lithium ion battery cathode material and lithium ion battery | |
| CN113526486A (en) | Ultrahigh-sulfur-content hard carbon material and preparation method and application thereof | |
| CN114628670B (en) | Application of nitrogen doped-carbon coated carbon fluoride in lithium/carbon fluoride battery | |
| CN115312776B (en) | Preparation method of high specific energy composite solid-state positive electrode | |
| CN116779813A (en) | Preparation method of graphene-based silicon-carbon composite 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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230904 Address after: 361000 Room 301, No. 178-2, Zhennan Second Road, Xinmin Town, Tong'an District, Xiamen City, Fujian Province Patentee after: XIAMEN ZHONGKE XIFU TECHNOLOGY Co.,Ltd. Address before: No. 258, Shanxi Heng Road, Jimei District, Xiamen City, Fujian Province, 361000 Patentee before: XIAMEN INSTITUTE OF RARE EARTH MATERIALS |