CN110482606B - Magnesium molybdate-carbon composite nanospheres and preparation method thereof - Google Patents
Magnesium molybdate-carbon composite nanospheres and preparation method thereof Download PDFInfo
- Publication number
- CN110482606B CN110482606B CN201910759957.7A CN201910759957A CN110482606B CN 110482606 B CN110482606 B CN 110482606B CN 201910759957 A CN201910759957 A CN 201910759957A CN 110482606 B CN110482606 B CN 110482606B
- Authority
- CN
- China
- Prior art keywords
- molybdate
- magnesium
- carbon composite
- preparation
- precursor
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G39/00—Compounds of molybdenum
-
- 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
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
-
- 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
-
- 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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/32—Spheres
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- 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
-
- 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 discloses a magnesium molybdate-carbon composite nanosphere and a preparation method thereof, belonging to the field of inorganic nano materials. According to the preparation method of the magnesium molybdate-carbon composite nanospheres, magnesium salts and molybdate are used as raw materials, a magnesium molybdate precursor is prepared through a hydrothermal method, then active functional groups contained in aminophenol derivatives are coordinated with magnesium molybdate, and the structure of the precursor is controllably cut at room temperature; the preparation method adopts a top-down preparation mode, can control the structure and the shape of the magnesium molybdate by stirring at room temperature, has simple preparation process and no pollution to the environment, is suitable for industrial scale production, and overcomes the problems of harsh reaction conditions and complex process in the prior art.
Description
Technical Field
The invention belongs to the field of inorganic nano materials, and particularly relates to a magnesium molybdate-carbon composite nanosphere and a preparation method thereof.
Background
Compared with a lithium ion battery, the sodium ion battery has larger sodium resource reserve and lower extraction cost, thereby having wider application prospect. Molybdate as the negative electrode material of the sodium ion battery has higher theoretical specific capacity, and gradually attracts people's attention in recent years. The design and preparation of the molybdate nano structure can more effectively develop the application potential of the molybdate nano structure as the negative electrode material of the sodium-ion battery. Regarding the preparation of magnesium molybdate, there are nanoparticles prepared by a sintering method, nanofibers prepared by an electrostatic flocking method, and nano films prepared by dip coating, but the research on the preparation of magnesium molybdate nanospheres is less.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a magnesium molybdate-carbon composite nanosphere and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a preparation method of the magnesium molybdate-carbon composite nanosphere comprises the following steps:
1) preparing a magnesium salt aqueous solution and a molybdate glycol solution; wherein the concentration of magnesium ions in the magnesium salt water solution is 0.1-0.5 mol/L, and the concentration of molybdate ions in the molybdate glycol solution is 0.1-0.5 mol/L;
2) mixing the components in a volume ratio of 1: (0.7-1) mixing a magnesium salt water solution and molybdate glycol, carrying out hydrothermal reaction after mixing, and cleaning and drying after the reaction to obtain a precursor; wherein the temperature of the hydrothermal reaction is 140-160 ℃, and the time is 5-7 h;
3) dispersing the precursor in an aminophenol derivative aqueous solution to obtain a reaction solution A, stirring the reaction solution A at normal temperature and normal pressure for 5-7 hours to react, and filtering, cleaning and drying after the reaction is finished to obtain a product A;
wherein the concentration of the aminophenol derivative aqueous solution is 0.1-0.5 mol/L, and 40mg of the precursor is added into each 100mL of the aminophenol derivative aqueous solution;
4) and calcining the product A for 1-3h at 350-550 ℃ in an inert gas atmosphere to obtain the magnesium molybdate-carbon composite nanosphere.
Further, the magnesium salt in the step 1) is magnesium chloride or magnesium sulfate.
Further, the molybdate in the step 1) is sodium molybdate or ammonium molybdate.
Further, the aminophenol derivative in step 3) is 2-amino-4-nitrophenol, 2-amino-4-chlorophenol, 3-amino-4-hydroxybenzenesulfonamide, 4- (2-aminoethyl) -1, 2-benzenediol, 3-diethylaminophenol or 4-acetaminophenol.
The magnesium molybdate-carbon composite nanospheres prepared by the preparation method.
Compared with the prior art, the invention has the following beneficial effects:
according to the preparation method of the magnesium molybdate-carbon composite nanospheres, magnesium salts and molybdate are used as raw materials, a magnesium molybdate precursor is prepared through a hydrothermal method, then active functional groups contained in aminophenol derivatives are coordinated with magnesium molybdate, and the structure of the precursor is controllably cut at room temperature; different from the prior art which adopts a bottom-up preparation mode, starting from molybdate radicals and magnesium ions, the magnesium molybdate crystals are nucleated and grow into special shapes through complex parameter setting.
The magnesium molybdate-carbon composite nanospheres have the particle size of 90-110nm, and have good electrochemical performance when being used as a negative electrode material of a sodium ion battery.
Drawings
Fig. 1 is a scanning electron microscope image of the magnesium molybdate-carbon composite nanosphere of example 1;
fig. 2 is an XRD pattern of the magnesium molybdate-carbon composite nanosphere of example 1;
fig. 3 is a graph showing electrochemical properties of the magnesium molybdate-carbon composite nanosphere of example 1.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
example 1
1) Respectively preparing a magnesium chloride aqueous solution with the concentration of 0.1mol/L and a sodium molybdate glycol solution with the concentration of 0.3 mol/L;
2) according to the volume ratio of 1: 0.7 mixing the magnesium chloride aqueous solution with a sodium molybdate glycol solution, reacting for 5 hours at 160 ℃, and cleaning and drying to obtain a precursor;
3) dispersing 40mg of precursor in 100mL of 0.1 mol/L2-amino-4-nitrophenol aqueous solution to obtain reaction liquid A, stirring for 5 hours at normal temperature and normal pressure, and filtering, cleaning and drying after the reaction to obtain a product A;
4) and calcining the product A at 550 ℃ for 2h under the argon atmosphere to obtain the magnesium molybdate-carbon composite nanospheres.
Referring to fig. 1, fig. 1 is a scanning electron microscope image of the magnesium molybdate-carbon composite nanosphere of example 1; the obtained product is spherical, the diameter is 90-110nm, the morphology is regular, and the electrochemical performance of the magnesium molybdate is improved.
Referring to fig. 2, fig. 2 is an XRD pattern of the magnesium molybdate-carbon composite nanosphere of example 1; the tested 2 theta range is 10-80 degrees, and the XRD diffraction peak of the product is sharp in shape and high in diffraction intensity, is basically consistent with the diffraction peak of a standard card, and does not have other miscellaneous peaks, so that the substance synthesized by the preparation method is high in purity and good in crystallinity.
Referring to fig. 3, fig. 3 is an electrochemical performance diagram of the magnesium molybdate-carbon composite nanospheres of example 1, and is a constant current charge-discharge cycle performance test diagram under a current density of 0.1A/g, the test is performed for 100 cycles, a voltage interval is 0.01-3.0V, and it can be seen from the diagram that the cycle curve of the sample is relatively stable and has a relatively high specific capacity. After 100 times of circulation, the specific capacity can be maintained at 201mAh/g, which indicates that the magnesium molybdate-carbon composite nanosphere with the structure has good electrochemical performance.
Example 2
1) Respectively preparing a magnesium sulfate aqueous solution with the concentration of 0.5mol/L and an ammonium molybdate glycol solution with the concentration of 0.1 mol/L;
2) according to the volume ratio of 1: 1, mixing a magnesium sulfate aqueous solution and an ammonium molybdate glycol solution, reacting for 7 hours at 160 ℃, and cleaning and drying to obtain a precursor;
3) dispersing 20mg of the precursor in a 3-amino-4-hydroxybenzenesulfonamide aqueous solution with the concentration of 0.5mol/L to obtain a reaction solution A, stirring for 7 hours at normal temperature and normal pressure, and filtering, cleaning and drying after the reaction is finished to obtain a product A;
4) and calcining the product A for 3h at 350 ℃ in the nitrogen atmosphere to obtain the magnesium molybdate-carbon composite nanospheres.
Example 3
1) Respectively preparing a magnesium chloride aqueous solution with the concentration of 0.3mol/L and a sodium molybdate glycol solution with the concentration of 0.4 mol/L;
2) according to the volume ratio of 1: 0.9 mixing a magnesium chloride aqueous solution and a sodium molybdate glycol solution, carrying out hydrothermal reaction for 6h at 150 ℃, and cleaning and drying to obtain a precursor;
3) dispersing 40mg of the precursor in 100mL of 4- (2-aminoethyl) -1, 2-benzenediol aqueous solution with the concentration of 0.5mol/L to obtain reaction liquid A, stirring for 6 hours at normal temperature and normal pressure, and filtering, cleaning and drying after the reaction is finished to obtain a product A;
4) and calcining the product A at 450 ℃ for 2h under the argon atmosphere to obtain the magnesium molybdate-carbon composite nanospheres.
Example 4
1) Respectively preparing a magnesium sulfate aqueous solution with the concentration of 0.4mol/L and an ammonium molybdate glycol solution with the concentration of 0.5 mol/L;
2) according to the volume ratio of 1: 0.8 mixing the magnesium sulfate aqueous solution and the ammonium molybdate glycol solution, carrying out hydrothermal reaction for 7h at 160 ℃, and cleaning and drying to obtain a precursor;
3) dispersing 40mg of precursor in 100mL of 0.2 mol/L3-diethylaminophenol aqueous solution to obtain a reaction solution A, stirring for 7 hours at normal temperature and normal pressure, and filtering, cleaning and drying after the reaction to obtain a product A;
4) and calcining the product A for 1h at 500 ℃ under the argon atmosphere to obtain the magnesium molybdate-carbon composite nanospheres.
Example 5
1) Respectively preparing a magnesium chloride aqueous solution with the concentration of 0.2mol/L and a sodium molybdate glycol solution with the concentration of 0.5 mol/L;
2) according to the volume ratio of 1: 0.7 mixing a magnesium chloride aqueous solution and a sodium molybdate glycol solution, carrying out hydrothermal reaction for 7h at 140 ℃, and cleaning and drying to obtain a precursor;
3) dispersing 20mg of precursor in 50mL of 0.2 mol/L4-acetamidophenol in water by ultrasonic wave to obtain reaction liquid A, stirring for 7 hours at normal temperature and normal pressure, and filtering, cleaning and drying after the reaction to obtain a product A;
4) and calcining the product A at 550 ℃ for 2h under the argon atmosphere to obtain the magnesium molybdate-carbon composite nanospheres.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (4)
1. The preparation method of the magnesium molybdate-carbon composite nanosphere is characterized by comprising the following steps of:
1) preparing a magnesium salt aqueous solution and a molybdate glycol solution; wherein the concentration of magnesium ions in the magnesium salt water solution is 0.1-0.5 mol/L, and the concentration of molybdate ions in the molybdate glycol solution is 0.1-0.5 mol/L;
2) mixing the components in a volume ratio of 1: (0.7-1) mixing a magnesium salt water solution and molybdate glycol, carrying out hydrothermal reaction after mixing, and cleaning and drying after the reaction to obtain a precursor; wherein the temperature of the hydrothermal reaction is 140-160 ℃, and the time is 5-7 h;
3) dispersing the precursor in an aminophenol derivative aqueous solution to obtain a reaction solution A, stirring the reaction solution A at normal temperature and normal pressure for 5-7 hours to react, and filtering, cleaning and drying after the reaction is finished to obtain a product A;
wherein the concentration of the aminophenol derivative aqueous solution is 0.1-0.5 mol/L, and 40mg of the precursor is added into each 100mL of the aminophenol derivative aqueous solution;
the aminophenol derivative in the step 3) is 2-amino-4-nitrophenol, 2-amino-4-chlorophenol, 3-amino-4-hydroxybenzenesulfonamide, 4- (2-aminoethyl) -1, 2-benzenediol, 3-diethylaminophenol or 4-acetaminophenol;
4) and calcining the product A for 1-3h at 350-550 ℃ in an inert gas atmosphere to obtain the magnesium molybdate-carbon composite nanosphere.
2. The method for preparing the magnesium molybdate-carbon composite nanosphere according to claim 1, wherein the magnesium salt in step 1) is magnesium chloride or magnesium sulfate.
3. The method for preparing the magnesium molybdate-carbon composite nanosphere according to claim 1, wherein the molybdate in the step 1) is sodium molybdate or ammonium molybdate.
4. A magnesium molybdate-carbon composite nanosphere prepared according to the preparation method of any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910759957.7A CN110482606B (en) | 2019-08-16 | 2019-08-16 | Magnesium molybdate-carbon composite nanospheres and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910759957.7A CN110482606B (en) | 2019-08-16 | 2019-08-16 | Magnesium molybdate-carbon composite nanospheres and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110482606A CN110482606A (en) | 2019-11-22 |
| CN110482606B true CN110482606B (en) | 2021-09-24 |
Family
ID=68551800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910759957.7A Active CN110482606B (en) | 2019-08-16 | 2019-08-16 | Magnesium molybdate-carbon composite nanospheres and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110482606B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698516A (en) * | 2016-11-17 | 2017-05-24 | 陕西科技大学 | Method for preparing magnesium molybdate nanosheets |
| CN109659145A (en) * | 2018-12-17 | 2019-04-19 | 上海应用技术大学 | A method of preparing porous spherical manganese oxide/carbon complex |
-
2019
- 2019-08-16 CN CN201910759957.7A patent/CN110482606B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698516A (en) * | 2016-11-17 | 2017-05-24 | 陕西科技大学 | Method for preparing magnesium molybdate nanosheets |
| CN109659145A (en) * | 2018-12-17 | 2019-04-19 | 上海应用技术大学 | A method of preparing porous spherical manganese oxide/carbon complex |
Non-Patent Citations (1)
| Title |
|---|
| "Fe-Mo与其碳复合材料的电化学合成及其应用研究";张道明;《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》;20180215(第2期);第32第1段至第40页倒数第1段 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110482606A (en) | 2019-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102086044B (en) | Method for preparing hollow spherical stannic oxide nano powder | |
| CN103318978B (en) | Preparation method of mesoporous nickel cobaltate fiber and application thereof | |
| CN111180689B (en) | Micron hollow porous composite spherical sodium ion battery positive electrode material and preparation method thereof | |
| CN101172646A (en) | Method of producing spinel structured lithium titanate | |
| CN109390564B (en) | Ternary metal oxide based on zinc ion doping, preparation method and application thereof | |
| CN106941162B (en) | Surface cladding type tertiary cathode material and preparation method thereof | |
| CN101269848A (en) | High-density spherical cobaltic-cobaltous oxide and method for preparing the same | |
| CN109411735A (en) | A kind of positive electrode and preparation method thereof and lithium ion battery | |
| CN102674482A (en) | Dendriform cobalt oxide nano material and preparation method thereof | |
| CN106654401A (en) | Bismuth ferrite/nickel hydroxide secondary alkali battery and preparation method therefor | |
| CN106450507A (en) | Secondary bismuth oxychloride/nickel hydroxide alkaline battery and preparation method thereof | |
| CN110683588A (en) | Self-supporting CoMoS4Super capacitor electrode material, preparation method and application | |
| US11387452B2 (en) | Linear porous lithium titanate material, preparation and product thereof | |
| CN102303902A (en) | Preparation method of lithium secondary battery negative electrode material nano spinel type lithium titanate | |
| CN110165166A (en) | A kind of method of microemulsion assisted in situ coated lithium ion battery positive electrode | |
| CN110342579B (en) | Manganese molybdate-carbon composite nanospheres and preparation method thereof | |
| CN106449153B (en) | A kind of Ni nanoparticle (OH)2@C composites and preparation method | |
| CN110482606B (en) | Magnesium molybdate-carbon composite nanospheres and preparation method thereof | |
| CN113035589A (en) | Zinc cobaltate nanosheet/carbon fiber cloth composite material and preparation method and application thereof | |
| CN104064372A (en) | Hydrothermal preparation method for graphene-like cobalt hydroxide nano film | |
| CN108832111B (en) | LiNi0.8Co0.15Al0.05O2Positive electrode material and preparation method thereof | |
| CN113506689B (en) | Preparation method of MOFs-derived NiO electrode material | |
| CN110492070B (en) | Iron molybdate-carbon composite nanospheres, preparation method and application of iron molybdate-carbon composite nanospheres as electrode material | |
| CN110386625B (en) | Molybdenum in-situ doped manganese oxide carbon composite material and preparation method thereof | |
| CN107317019A (en) | A kind of sodium-ion battery negative pole ferrous carbonate/graphene composite material and preparation method and application |
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 |