CN113184906A - One-step hydrothermal method for preparing V2O3Method of nanosphere - Google Patents

One-step hydrothermal method for preparing V2O3Method of nanosphere Download PDF

Info

Publication number
CN113184906A
CN113184906A CN202110522127.XA CN202110522127A CN113184906A CN 113184906 A CN113184906 A CN 113184906A CN 202110522127 A CN202110522127 A CN 202110522127A CN 113184906 A CN113184906 A CN 113184906A
Authority
CN
China
Prior art keywords
solution
preparing
weighing
magnetic stirrer
water
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.)
Pending
Application number
CN202110522127.XA
Other languages
Chinese (zh)
Inventor
黄剑锋
王羽偲嘉
曹丽云
李嘉胤
罗晓敏
王芳敏
胡云飞
王瑜航
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi University of Science and Technology
Original Assignee
Shaanxi University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shaanxi University of Science and Technology filed Critical Shaanxi University of Science and Technology
Priority to CN202110522127.XA priority Critical patent/CN113184906A/en
Publication of CN113184906A publication Critical patent/CN113184906A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G31/00—Compounds of vanadium
    • C01G31/02—Oxides
    • 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
    • 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
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
    • 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
    • C01P2004/30—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
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/40—Electric 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 discloses a one-step hydrothermal method for preparing V2O3The method for the nanosphere comprises the following steps: according to V (water): weighing 15-20 ml of water and 3-4 ml of ammonia water according to the volume ratio of V (ammonia water) to 5:1 to prepare a mixed solution, weighing a vanadium source, adding the vanadium source into the mixed solution, and stirring the mixed solution by using a magnetic stirrer at room temperature to obtain a solution A with the vanadium source concentration of 0.023-0.038 mol/L; step two: weighing a sulfur source, adding the sulfur source into the solution A, and stirring by using a magnetic stirrer at room temperature to obtain a solution B with the sulfur source concentration of 0.13-0.17 mol/L; step three: transferring the solution B into a polytetrafluoroethylene lining, putting the polytetrafluoroethylene lining into an oven, and carrying out solvothermal reaction at 160-200 ℃ for 18-24 h; step four: thermally reacting the solventCollecting the product by suction filtration, washing with a lotion, and freeze-drying to obtain V2O3An electrode material. The invention adopts a one-step hydrothermal method to prepare V2O3The method has the advantages of simple process, low energy consumption, high yield, suitability for large-scale production and low production cost; the product has high purity and crystallinity, uniform structure and beneficial performance.

Description

One-step hydrothermal method for preparing V2O3Method of nanosphere
Technical Field
The invention belongs to the field of battery electrode materials, relates to preparation of electrode materials, and particularly relates to a method for preparing V by a one-step hydrothermal method2O3A method of nanospheres.
Background
In recent years, next-generation high-capacity, high-energy-density rechargeable batteries are continuously sought. Lithium ion batteries have been widely used in people's daily lives. Sodium Ion Batteries (SIBs) and Potassium Ion Batteries (PIBs) have recently attracted more and more attention due to their abundant resources and low cost. V2O3The open-air tunnel structure composed of three-dimensional V-V frames can effectively facilitate the insertion of alkali metal ions. A number of researchers have been extensively V2O3Will serve as the battery anode and cathode materials. (Mcnulty D, Buckley D N, O' Dwye C.V2O3 Polycrystalline Nanorod Cathodematerials for Li-Ion Batteries with Long Cycle Life and High Capacity Retention[J].ChemElectroChem,2017.)(Jin T,Li H,Li Y,et al.Intercalation pseudocapacitance in flexible and self-standing V2O3 porous nanofibers for high-rate and ultra-stable K ion storage[J]Nano Energy,2018,50:462-2O3Most of the synthesis methods are complicated, high-temperature calcination is needed, the process is complicated, and the energy consumption is high.
Disclosure of Invention
Based on the defects of the prior art, the invention aims to provide a one-step hydrothermal method for preparing V2O3The method of the nanosphere has simple preparation process and excellent product performance.
In order to achieve the purpose, the invention adopts the technical scheme that:
one-step hydrothermal method for preparing V2O3A method of nanospheres comprising the steps of:
the method comprises the following steps: according to V (water): weighing 15-20 ml of water and 3-4 ml of ammonia water according to the volume ratio of V (ammonia water) to 5:1 to prepare a mixed solution, weighing a vanadium source, adding the vanadium source into the mixed solution, and stirring the mixed solution by using a magnetic stirrer at room temperature to obtain a solution A with the vanadium source concentration of 0.023-0.038 mol/L;
step two: weighing a sulfur source, adding the sulfur source into the solution A, and stirring by using a magnetic stirrer at room temperature to obtain a solution B with the sulfur source concentration of 0.13-0.17 mol/L;
step three: transferring the solution B into a polytetrafluoroethylene lining, putting the polytetrafluoroethylene lining into an oven, and carrying out solvothermal reaction at 160-200 ℃ for 18-24 h;
step four: collecting the product of the solvothermal reaction in a suction filtration mode, and obtaining V after washing and freeze drying2O3An electrode material.
The invention also has the following technical characteristics:
preferably, the vanadium source is ammonium metavanadate.
Preferably, the sulfur source is thioacetamide.
Preferably, in the first step, the stirring time of the magnetic stirrer is 10-30 min, and the rotating speed is 500-700 r/min.
Preferably, the stirring time of the magnetic stirrer in the second step is 30-60 min, and the rotating speed is 500-700 r/min.
Preferably, the filling ratio of the polytetrafluoroethylene lining in the third step is 24-35%.
Preferably, the washing method in the fourth step is washing with water and ethanol alternately for three times.
Compared with the prior art, the invention has the following beneficial effects:
the invention adopts a one-step hydrothermal method to prepare V2O3Simple process, no need of high-temperature calcination, low energy consumption, high yield, and suitability for large-scale productionThe production cost is low;
v prepared by the invention2O3The nano-sphere self-assembled by nano particles is used as an electrode material, and has high purity, high crystallinity and uniform structure;
v prepared by the invention2O3The nanospheres have excellent performance in the anode material of the alkali metal ion battery.
Drawings
FIG. 1 is V prepared in example 22O3The XRD diffraction pattern of (1), wherein the abscissa is the angle of 2 theta and the ordinate is the intensity;
FIG. 2 is V prepared in example 22O3SEM picture of (1);
FIG. 3 is V prepared in example 22O3The graph of potassium rate performance in which the abscissa is the number of cycles and the ordinate is the capacity (mAh/g).
Detailed Description
Example 1:
the method comprises the following steps: weighing a certain amount of ammonium metavanadate, adding the ammonium metavanadate into a mixed solution of 15ml of water and 3ml of ammonia water, and stirring for 10min at room temperature by using a magnetic stirrer at the rotating speed of 500r/min to obtain a solution A with the concentration of 0.023 mol/l;
step two: weighing a certain amount of thioacetamide, adding the thioacetamide into the solution A, and stirring the thioacetamide for 30min at room temperature by using a magnetic stirrer at the rotating speed of 500r/min to obtain a solution B with the concentration of 0.13 mol/l;
step three: transferring the solution B into a polytetrafluoroethylene lining with a filling ratio of 24%; putting the mixture into an oven, and carrying out solvothermal reaction at 160 ℃ for 18 h;
step four: collecting the product of the solvothermal reaction in a suction filtration mode, alternately washing with water and ethanol for three times, and freeze-drying for 12 hours to obtain V2O3An electrode material.
Example 2:
the method comprises the following steps: weighing a certain amount of ammonium metavanadate, adding the ammonium metavanadate into a mixed solution of 15ml of water and 3ml of ammonia water, and stirring for 10min at room temperature by using a magnetic stirrer at the rotating speed of 500r/min to obtain a solution A with the concentration of 0.033 mol/l;
step two: weighing a certain amount of thioacetamide, adding the thioacetamide into the solution A, and stirring the thioacetamide for 40min at room temperature by using a magnetic stirrer at the rotating speed of 500r/min to obtain a solution B with the concentration of 0.15 mol/l;
step three: transferring the solution B into a polytetrafluoroethylene lining with a filling ratio of 28%; putting the mixture into an oven, wherein the solvothermal reaction temperature is 170 ℃, and the reaction time is 20 hours;
step four: collecting the product of the solvothermal reaction in a suction filtration mode, alternately washing with water and ethanol for three times, and freeze-drying for 12 hours to obtain V2O3An electrode material.
FIG. 1 is V prepared in example 22O3The XRD diffraction pattern of (1), wherein the abscissa is the angle of 2 theta and the ordinate is the intensity; as can be seen from FIG. 1, the diffraction peaks all point to JCPDS 71-0342V 2O3 PDF card, and the synthesis of pure phase V is proved2O3。
FIG. 2 is V prepared in example 22O3SEM picture of (1); it can be seen from fig. 2 that V2O3 is a nanosphere formed by self-assembly of nanoparticles, and has uniform size and uniform dispersion.
FIG. 3 is V prepared in example 22O3The graph of potassium rate performance in which the abscissa is the number of cycles and the ordinate is the capacity (mAh/g). From FIG. 3, it can be seen that the self-assembly V2O3The rate performance of the nanosphere potassium ion battery is good, and the nanosphere potassium ion battery can respectively maintain the capacities of 220, 250, 170, 150, 110 and 70mAh/g under the current densities of 0.1, 0.2, 0.5, 1, 2 and 5A/g. Example 3:
the method comprises the following steps: weighing a certain amount of ammonium metavanadate, adding the ammonium metavanadate into a mixed solution of 20ml of water and 4ml of ammonia water, and stirring the mixture for 30min at room temperature by using a magnetic stirrer at the rotating speed of 600r/min to obtain a solution A with the concentration of 0.025 mol/l;
step two: weighing a certain amount of thioacetamide, adding the thioacetamide into the solution A, and stirring the thioacetamide for 60min at room temperature by using a magnetic stirrer at the rotating speed of 650r/min to obtain a solution B with the concentration of 0.13 mol/l;
step three: transferring the solution B into a polytetrafluoroethylene lining with a filling ratio of 32%; putting the mixture into an oven, wherein the solvothermal reaction temperature is 160 ℃, and the reaction time is 24 hours;
step four: collecting the product of the solvothermal reaction in a suction filtration mode, alternately washing with water and ethanol for three times, and freeze-drying for 12 hours to obtain V2O3An electrode material.
Example 4:
the method comprises the following steps: weighing a certain amount of ammonium metavanadate, adding the ammonium metavanadate into a mixed solution of 18ml of water and 3.6ml of ammonia water, and stirring the mixture for 20min at room temperature by using a magnetic stirrer at the rotating speed of 500r/min to obtain a solution A with the concentration of 0.036 mol/l;
step two: weighing a certain amount of thioacetamide, adding the thioacetamide into the solution A, and stirring the thioacetamide for 30min at room temperature by using a magnetic stirrer at the rotating speed of 500r/min to obtain a solution B with the concentration of 0.17 mol/l;
step three: transferring the solution B into a polytetrafluoroethylene lining with a filling ratio of 30%; putting the mixture into an oven, wherein the solvothermal reaction temperature is 200 ℃, and the reaction time is 18 h;
step four: collecting the product of the solvothermal reaction in a suction filtration mode, alternately washing with water and ethanol for three times, and freeze-drying for 12 hours to obtain V2O3An electrode material.
Example 5:
the method comprises the following steps: weighing a certain amount of ammonium metavanadate, adding the ammonium metavanadate into a mixed solution of 15ml of water and 3ml of ammonia water, and stirring the mixture for 30min at room temperature by using a magnetic stirrer at the rotating speed of 700r/min to obtain a solution A with the concentration of 0.038 mol/l;
step two: weighing a certain amount of thioacetamide, adding the thioacetamide into the solution A, and stirring the thioacetamide for 60min at room temperature by using a magnetic stirrer at the rotating speed of 700r/min to obtain a solution B with the concentration of 0.16 mol/l;
step three: transferring the solution B into a polytetrafluoroethylene lining with a filling ratio of 35%; putting the mixture into an oven, wherein the solvothermal reaction temperature is 180 ℃, and the reaction time is 24 hours;
step four: collecting the product of the solvothermal reaction in a suction filtration mode, alternately washing with water and ethanol for three times, and freeze-drying for 12 hours to obtain V2O3An electrode material.

Claims (7)

1. One-step hydrothermal method for preparing V2O3A method of nanospheres comprising the steps of:
the method comprises the following steps: according to V (water): weighing 15-20 ml of water and 3-4 ml of ammonia water according to the volume ratio of V (ammonia water) to 5:1 to prepare a mixed solution, weighing a vanadium source, adding the vanadium source into the mixed solution, and stirring the mixed solution by using a magnetic stirrer at room temperature to obtain a solution A with the vanadium source concentration of 0.023-0.038 mol/L;
step two: weighing a sulfur source, adding the sulfur source into the solution A, and stirring by using a magnetic stirrer at room temperature to obtain a solution B with the sulfur source concentration of 0.13-0.17 mol/L;
step three: transferring the solution B into a polytetrafluoroethylene lining, putting the polytetrafluoroethylene lining into an oven, and carrying out solvothermal reaction at 160-200 ℃ for 18-24 h;
step four: and collecting the product of the solvothermal reaction in a suction filtration mode, washing the product, and freeze-drying the product to obtain the V2O3 electrode material.
2. The one-step hydrothermal process of claim 1 for preparing V2O3The method for preparing the nanosphere is characterized in that the vanadium source is ammonium metavanadate.
3. The one-step hydrothermal process of claim 1 for preparing V2O3A method of nanospheres characterized in that the source of sulfur is thioacetamide.
4. The one-step hydrothermal process of claim 1 for preparing V2O3The method for preparing the nanospheres is characterized in that in the step one, the stirring time of the magnetic stirrer is 10-30 min, and the rotating speed is 500-700 r/min.
5. The one-step hydrothermal process of claim 1 for preparing V2O3The method for preparing the nanospheres is characterized in that in the second step, the stirring time of the magnetic stirrer is 30-60 min, and the rotating speed is 500-700 r/min.
6. As claimed in claim1 the one-step hydrothermal method for preparing V2O3The method for preparing the nanosphere is characterized in that the filling ratio of the polytetrafluoroethylene lining in the step three is 24-35%.
7. The one-step hydrothermal process of claim 1 for preparing V2O3The method for washing the nanospheres is characterized in that the washing method in the fourth step is washing with water and ethanol alternately for three times.
CN202110522127.XA 2021-05-13 2021-05-13 One-step hydrothermal method for preparing V2O3Method of nanosphere Pending CN113184906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110522127.XA CN113184906A (en) 2021-05-13 2021-05-13 One-step hydrothermal method for preparing V2O3Method of nanosphere

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110522127.XA CN113184906A (en) 2021-05-13 2021-05-13 One-step hydrothermal method for preparing V2O3Method of nanosphere

Publications (1)

Publication Number Publication Date
CN113184906A true CN113184906A (en) 2021-07-30

Family

ID=76981695

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110522127.XA Pending CN113184906A (en) 2021-05-13 2021-05-13 One-step hydrothermal method for preparing V2O3Method of nanosphere

Country Status (1)

Country Link
CN (1) CN113184906A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105621485A (en) * 2015-12-30 2016-06-01 中国人民解放军国防科学技术大学 Preparation method of vanadium trioxide powder
CN105819507A (en) * 2016-04-29 2016-08-03 陕西科技大学 Preparation method and application of nanosheet self-assembled microflower-shaped VS2
US20170240752A1 (en) * 2014-08-26 2017-08-24 The Research Foundation For The State University Of New York Vo2 and v2o5 nano- and micro-materials and processes of making and uses of same
CN107840368A (en) * 2017-11-21 2018-03-27 陕西科技大学 A kind of nanometer sheet self assembly sub-micrometer flower-shape M-phase vanadium dioxide powder and preparation method thereof
CN108117099A (en) * 2017-12-22 2018-06-05 陕西科技大学 A kind of spherical VOOH powders of stub self assembly and preparation method and application
CN109772366A (en) * 2019-03-18 2019-05-21 陕西科技大学 A kind of preparation method of cuprous sulfide/vanadium trioxide as full PH elctro-catalyst
CN111646509A (en) * 2020-06-17 2020-09-11 广东工业大学 Sodium-ion battery curled vanadium tetrasulfide nanosheet negative electrode material and preparation method and application thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170240752A1 (en) * 2014-08-26 2017-08-24 The Research Foundation For The State University Of New York Vo2 and v2o5 nano- and micro-materials and processes of making and uses of same
CN105621485A (en) * 2015-12-30 2016-06-01 中国人民解放军国防科学技术大学 Preparation method of vanadium trioxide powder
CN105819507A (en) * 2016-04-29 2016-08-03 陕西科技大学 Preparation method and application of nanosheet self-assembled microflower-shaped VS2
CN107840368A (en) * 2017-11-21 2018-03-27 陕西科技大学 A kind of nanometer sheet self assembly sub-micrometer flower-shape M-phase vanadium dioxide powder and preparation method thereof
CN108117099A (en) * 2017-12-22 2018-06-05 陕西科技大学 A kind of spherical VOOH powders of stub self assembly and preparation method and application
CN109772366A (en) * 2019-03-18 2019-05-21 陕西科技大学 A kind of preparation method of cuprous sulfide/vanadium trioxide as full PH elctro-catalyst
CN111646509A (en) * 2020-06-17 2020-09-11 广东工业大学 Sodium-ion battery curled vanadium tetrasulfide nanosheet negative electrode material and preparation method and application thereof

Similar Documents

Publication Publication Date Title
CN110474044B (en) High-performance water-based zinc ion battery positive electrode material and preparation method and application thereof
CN107331867B (en) Preparation method of nitrogen-doped porous carbon material used as negative electrode of sodium-ion battery
CN111943228A (en) Prussian blue type sodium ion battery positive electrode material and preparation method thereof
CN102583292A (en) Ferric phosphate having micro-nano structure and preparation method thereof as well as lithium iron phosphate material
CN105236486B (en) A kind of high performance lithium ion battery anode material vanadium pentoxide hollow microsphere and preparation method
CN104900861B (en) A kind of lithium hydrogentitanate Li H Ti O material and preparation method thereof
CN104332629B (en) The preparation method of a kind of lithium manganese phosphate hollow nanospheres and product
CN107359328A (en) A kind of preparation method of lithium ion battery botryoidalis niobium oxide/carbon composite electrode material
CN109449411B (en) Method for synthesizing tungsten disulfide @ C composite electrode material in limited domain
WO2023227035A1 (en) Positive electrode material and preparation method therefor
CN113851633A (en) Niobium-doped high-nickel ternary cathode material coated with niobium phosphate and preparation method thereof
CN114864896A (en) In-situ carbon-coated nano lithium iron phosphate cathode material and preparation method thereof
CN113104863A (en) Inert transition metal element doped iron-based Prussian blue sodium ion battery positive electrode material
CN103996852A (en) Preparation method of novel nano lithium vanadium phosphate positive electrode material
CN104183827B (en) A kind of lithium iron phosphate nano rod and preparation method thereof
CN109292795A (en) The preparation and its application of rich sodium, anhydrous Prussian blue similar object material
CN114933293A (en) Preparation of sodium vanadium fluorophosphate and application thereof in sodium-ion battery
CN113213535A (en) VS capable of being simultaneously applied to positive electrode and negative electrode and with controllable structure2Preparation method of micro-flower electrode material
CN106549156B (en) Pompon-shaped SnS2Preparation method of lithium ion battery cathode material
CN113264555A (en) Two-dimensional V6O13Preparation method and application of nanosheet
CN110143863B (en) Tubular manganese oxalate negative electrode material of lithium ion battery and preparation method thereof
CN113184906A (en) One-step hydrothermal method for preparing V2O3Method of nanosphere
CN116119739A (en) Ion doped manganese-based sodium ion positive electrode material and preparation method and application thereof
CN113823790B (en) Cobalt iron selenide/graphene nanoribbon composite negative electrode material and preparation method thereof
CN113258062B (en) Ternary precursor with radial spherical-roof cone structure, positive electrode material and preparation method

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
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20210730