CN108565426A - Li3VO4/LiVO2Composite lithium ion battery cathode material and preparation method thereof - Google Patents

Li3VO4/LiVO2Composite lithium ion battery cathode material and preparation method thereof Download PDF

Info

Publication number
CN108565426A
CN108565426A CN201810339008.9A CN201810339008A CN108565426A CN 108565426 A CN108565426 A CN 108565426A CN 201810339008 A CN201810339008 A CN 201810339008A CN 108565426 A CN108565426 A CN 108565426A
Authority
CN
China
Prior art keywords
lithium ion
livo
ion battery
composite
preparation
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
Application number
CN201810339008.9A
Other languages
Chinese (zh)
Other versions
CN108565426B (en
Inventor
倪世兵
康桃
万智伟
杨学林
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.)
China Three Gorges University CTGU
Original Assignee
China Three Gorges University CTGU
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 China Three Gorges University CTGU filed Critical China Three Gorges University CTGU
Priority to CN201810339008.9A priority Critical patent/CN108565426B/en
Publication of CN108565426A publication Critical patent/CN108565426A/en
Application granted granted Critical
Publication of CN108565426B publication Critical patent/CN108565426B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • 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
    • H01M4/58—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
    • H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
    • 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)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nanotechnology (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The present invention provides a kind of Li3VO4/LiVO2The preparation method of composite lithium ion battery cathode material, specifically by lithium carbonate, vanadic anhydride and hexamethylenetetramine mixed dissolution in the beaker equipped with 35ml absolute ethyl alcohols, and quickly stirring 1h makes each component be sufficiently mixed；Obtained mixed solution is transferred in water heating kettle liner, 10 ~ 30h is reacted in 100 DEG C ~ 180 DEG C convection ovens, cooled to room temperature obtains interphase product, is made of supernatant liquid and lower sediment；The supernatant liquor in interphase product is isolated, this supernatant liquor is placed in 60 ~ 85 DEG C of baking ovens and is dried, it is in faint yellow to be ground to powder, and calcining 5 ~ 10h at 450 ~ 650 DEG C in nitrogen or argon atmosphere obtains composite material.The material is applied on lithium ion battery negative material by the present invention, it is shown that preferable chemical property.

Description

Li3VO4/LiVO2Composite lithium ion battery cathode material and preparation method thereof
Technical field
The present invention relates to a kind of novel cathode material for lithium ion batteries, more particularly to Li3VO4/LiVO2Composite negative pole
Material belongs to field of electrochemical power source.
Technical background
In recent years, it as the fast development of lithium-ion battery system, application field are constantly widened, is set by portable electronic Standby field is gradually extended to the fields such as electric vehicle and extensive energy storage engineering, this undoubtedly proposes lithium ion battery higher It is required that.The lithium ion battery negative material important role of performer in the battery.Currently, commercialized negative electrode of lithium ion battery is Graphite-like carbon material, Li4Ti5O12, but the two has been difficult to meet mesh in energy density, security performance, cycle life etc. The preceding market demand.Development has both the novel high property of high-energy density, high safety performance, long circulation life and environmental-friendly feature Energy lithium-ion battery system is the following only way.Positive electrode type relative abundance, and develop more mature, negative material System is more single, and the research and development of negative material are most important for Development of Novel high performance lithium ion battery system.
Li3VO4It is a kind of novel insertion/deintercalation type negative material, intercalation potential concentrates on 0.5 ~ 1.0 V, fills, puts Motor is managed：xLi+ + Li3VO4 + xe-↔ Li3+xVO4（x≤3）.With commercialized graphite（372mAh/g）It compares, has Higher theoretical capacity capacity（592 mAh/g）With the discharge platform of safety, compared to Li4Ti5O12（175mAh/g）There is higher Theoretical capacity and lower discharge platform, realize the unification of security performance and energy density, great research and practical value. Promote Li3VO4The major way of negative material performance is to enhance its electric conductivity and lithium ion diffuser efficiency.Tradition improves Li3VO4 The method of electric conductivity is mainly compound with carbon material such as graphene, natural graphite, agraphitic carbon etc., but this compound it is difficult to simultaneously It influences the particle size of material and then improves its lithium ion diffuser efficiency.LiVO2Itself it also can be used as a kind of negative material, and its Electric conductivity is far above Li3VO4.By adjusting Li, V ratio in reaction raw materials and regulating and controlling reaction environment, it is expected to obtain Li3VO4/ LiVO2Composite material.High conductance LiVO2It mutually can enhance composite material monolithic conductive performance, while effectively inhibit Li3VO4It is being sintered Grain growth in the process promotes its lithium ion diffuser efficiency, gained Li3VO4/LiVO2Composite material is expected to obtain excellent electrification Learn performance.For this purpose, this patent has developed a kind of Li based on solvent heat3VO4/LiVO2Composite material and preparation method thereof utilizes solvent Ingredient and the distribution for adjusting intermediate phase precursor, Li is obtained in conjunction with solid-phase sintering3VO4With LiVO2Equally distributed Li3VO4/ LiVO2Composite material.
Invention content
A kind of composite lithium ion battery cathode material involved in the present invention, the negative material are Li3VO4/LiVO2Composite wood Material, the material are graininess.Specific preparation method, steps are as follows：Lithium carbonate, vanadic anhydride and hexamethylenetetramine are distinguished It is dissolved in the beaker of absolute ethyl alcohol, and quickly stirring makes each component be sufficiently mixed, and obtains mixed solution；Obtained mixing is molten Liquid is transferred in water heating kettle liner, and 5 ~ 30h is reacted in 100 DEG C ~ 180 DEG C convection ovens, and cooled to room temperature is reacted Object；Then the supernatant liquor in the reactant obtained is isolated, this supernatant liquor is placed in 60 ~ 85 DEG C of baking ovens and is dried, grinding It is in faint yellow to powder, calcining 5 ~ 10h at 450 ~ 650 DEG C in nitrogen or argon atmosphere obtains composite material.
The molar ratio of above-mentioned lithium, vanadium and hexamethylenetetramine is 1 ~ 5：1：2 ~ 10, solvent hot solvent is absolute ethyl alcohol.
Li3VO4Itself has extremely strong water solubility, it is difficult to be directly obtained by hydro-thermal method.It can be obtained by solvent thermal reaction To the lower Li of yield3VO4, most Li, V are still dissolved in solvent.The principle of this patent is exactly to utilize alcohol solvent heat The evenly dispersed interphase solution of Li, V is prepared in reaction.Using the reproducibility of ethyl alcohol to V5+It carries out appropriate in-situ reducing and combines At soluble precursor.Meanwhile the special dispersion performance promotion each ingredient of interphase of ethyl alcohol is evenly dispersed.Then sintered Cheng Zhong is obtained by solid phase reaction with V5+And V3+Li3VO4/LiVO2Composite material.
Li according to the present invention3VO4/LiVO2Preparation method, material and the performance of composite material have following aobvious The characteristics of work：
1）Synthesis technology is simple, easily operated, and controllability is good；
2）Prepared Li3VO4/LiVO2Composite material granular size is smaller, about 100 nm.Wherein, Li3VO4With LiVO2It is compound Uniformly.
3）Li obtained by the present invention3VO4/LiVO2Composite material, which is used as lithium ion battery negative material, has higher appearance Amount, lower charge and discharge platform and good cycle performance.
Description of the drawings
The XRD spectrum of sample prepared by Fig. 1 embodiments 1.
The SEM of sample prepared by Fig. 2 embodiments 1 schemes.
The preceding charge and discharge curve graph three times of sample prepared by Fig. 3 embodiments 1（a）, cycle performance figure（b）.
The cycle performance figure of sample prepared by Fig. 4 embodiments 2.
The cycle performance figure of sample prepared by Fig. 5 embodiments 3.
Specific implementation mode：
Embodiment 1
Steps are as follows for materials synthesis：
（1）By lithium carbonate, vanadic anhydride and hexamethylenetetramine are according to molar ratio 4：1：5 weigh 4mmol respectively, 1mmol and 5mmol is dissolved in the beaker equipped with 35ml absolute ethyl alcohols, and quickly stirring 1h makes each component be sufficiently mixed, and it is uniform to obtain color Solution；
（2）By step（1）In obtained mixed solution be transferred in water heating kettle liner, reacted in 120 DEG C of convection ovens for 24 hours, Cooled to room temperature obtains reactant；
（3）By step（2）In supernatant liquor in obtained reactant isolate, this supernatant liquor is placed in 70 DEG C of baking ovens and is dried Dry, it is in faint yellow to be ground to powder, and calcining 5h at 500 DEG C in nitrogen protection atmosphere obtains composite material.
By prepared Li3VO4/LiVO2Composite sample carries out XRD tests, as shown in Figure 1.It is located at 44.5 in figureo With Li3VO4's（051）Crystal face corresponds to, and is located at 64.2oWith LiVO2's（440）Crystal face corresponds to, and test result shows prepared Sample is Li3VO4And LiVO2Mixture, correspond to Li3VO4XRD card JCPDS, no.24-0666 correspond to LiVO2XRD Card JCPDS, no.36-0041.The pattern of prepared sample is via sem analysis, as shown in Fig. 2, prepared sample is in particle Shape.Battery is made in the material of 1 gained of embodiment as follows：By Li obtained3VO4/LiVO2Composite sample and second Acetylene black and Kynoar are 8 by weight:1:1 ratio mixing, is made slurry by solvent of N- first class pyrrolidones, coats On the copper foil of 10 μ m thicks, after dry at 60 DEG C, it is cut into the disk of 14mm, 12h is dried in vacuo at 120 DEG C.With gold It is to electrode to belong to lithium foil, and Celgard 2400 is diaphragm, 1 M LiPF6/DMC: EC=1:1 solution is electrolyte, is protected in argon gas CR2025 type batteries are assembled into the glove box of shield.Battery pack stands 8h after installing, then is carried out with CT2001A battery test systems Constant current charge-discharge test, test voltage are 3 ~ 0.02V.Fig. 3 is prepared Li3VO4/LiVO2Composite material is as lithium-ion electric The specific capacity of charge and discharge for the first time that pond negative material is shown is respectively 573.9,931mAh/g, charge and discharge specific volume after 40 cycles Amount is respectively 486.9,494.7mAh/g, it is shown that good stable circulation performance.
Embodiment 2
Steps are as follows for materials synthesis：
（1）By lithium carbonate, vanadic anhydride and hexamethylenetetramine are according to molar ratio 2：1：5 weigh 2mmol respectively, 1mmol and 5mmol is dissolved in the beaker equipped with 35ml absolute ethyl alcohols, and quickly stirring 1h makes each component be sufficiently mixed, and it is uniform to obtain color Solution；
（2）By step（1）In obtained mixed solution be transferred in water heating kettle liner, reacted in 140 DEG C of convection ovens for 24 hours, Cooled to room temperature obtains reactant；
（3）By step（2）In supernatant liquor in obtained reactant isolate, this supernatant liquor is placed in 70 DEG C of baking ovens, Until drying, it is in faint yellow to be ground to powder, and calcining 5h at 550 DEG C in nitrogen protection atmosphere obtains composite material.
Battery is made by method described in embodiment 1 in the material of 2 gained of embodiment.Fig. 4 is prepared Li3VO4/ LiVO2Composite material is respectively 509.5,887mAh/ as the specific capacity of charge and discharge for the first time that lithium ion battery negative material is shown G, 40 times cycle after charge and discharge specific capacity be respectively 482.9,488.4mAh/g, it is shown that good stable circulation performance.
Embodiment 3
Steps are as follows for materials synthesis：
（1）By lithium carbonate, vanadic anhydride and hexamethylenetetramine are according to molar ratio 1：1：5 weigh 1mmol respectively, 1mmol and 5mmol is dissolved in the beaker equipped with 35ml absolute ethyl alcohols, and quickly stirring 1h makes each component be sufficiently mixed, and it is uniform to obtain color Solution；
（2）By step（1）In obtained mixed solution be transferred in water heating kettle liner, reacted in 160 DEG C of convection ovens for 24 hours, Cooled to room temperature obtains reactant；
（3）By step（2）In supernatant liquor in obtained reactant isolate, this supernatant liquor is placed in 70 DEG C of baking ovens, Until drying, it is in faint yellow to be ground to powder, and calcining 5h at 600 DEG C in argon atmosphere obtains composite material.
Battery is made by method described in embodiment 1 in the material of 3 gained of embodiment.Fig. 5 is prepared Li3VO4/ LiVO2Composite material as the specific capacity of charge and discharge for the first time that lithium ion battery negative material is shown is respectively 433.8, 721.1mAh/g, charge and discharge specific capacity is respectively 397.5,397.6mAh/g after 40 cycles, it is shown that cycle is steady well Qualitative energy.

Claims (4)

1. a kind of composite lithium ion battery cathode material, which is characterized in that the composite negative pole material ingredient is Li3VO4/LiVO2。
2. a kind of preparation method of composite cathode material for lithium ion cell, its step are as follows：
（1）By lithium carbonate, vanadic anhydride and hexamethylenetetramine mixed dissolution in absolute ethyl alcohol, and stirring makes each component fill Divide mixing, obtains mixed solution；
（2）By step（1）In obtained mixed solution be transferred in water heating kettle liner, it is anti-in 100 DEG C ~ 180 DEG C convection ovens 5 ~ 30h, cooled to room temperature is answered to obtain reactant；
（3）By step（2）In supernatant liquor in obtained reactant isolate, supernatant liquor drying is ground to powder in light Yellow calcines in nitrogen or argon atmosphere and obtains Li3VO4/LiVO2Composite material.
3. lithium ion battery Li according to claim 23VO4/LiVO2The preparation method of composite negative pole material, feature exist In, lithium carbonate, the molar ratio of vanadic anhydride and hexamethylenetetramine is 1 ~ 5：1：2~10.
4. lithium ion battery Li according to claim 23VO4/LiVO2The preparation method of composite negative pole material, feature exist In the drying temperature of the supernatant liquor is 60-85 DEG C；Calcination temperature is 450-650 DEG C, calcination time 5-10h.
CN201810339008.9A 2018-04-16 2018-04-16 Li3VO4/LiVO2Composite lithium ion battery cathode material and preparation method thereof Active CN108565426B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810339008.9A CN108565426B (en) 2018-04-16 2018-04-16 Li3VO4/LiVO2Composite lithium ion battery cathode material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810339008.9A CN108565426B (en) 2018-04-16 2018-04-16 Li3VO4/LiVO2Composite lithium ion battery cathode material and preparation method thereof

Publications (2)

Publication Number Publication Date
CN108565426A true CN108565426A (en) 2018-09-21
CN108565426B CN108565426B (en) 2020-09-15

Family

ID=63535394

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810339008.9A Active CN108565426B (en) 2018-04-16 2018-04-16 Li3VO4/LiVO2Composite lithium ion battery cathode material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN108565426B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111834624A (en) * 2020-07-28 2020-10-27 湖南工学院 Two-dimensional LiV3O8Graphene composite material and preparation method and application thereof
CN114684783A (en) * 2022-04-11 2022-07-01 浙江大学 Additive capable of improving hydrogen storage performance of lithium magnesium nitrogen hydride and preparation and application thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130168611A1 (en) * 2010-10-27 2013-07-04 Ocean's King Lighting Science & Technology Co., Ltd., Composite electrode material, manufacturing method and application thereof
CN103474641A (en) * 2013-09-25 2013-12-25 三峡大学 Lithium ion battery anode material Li3VO4 and preparation method thereof
CN104201340A (en) * 2014-08-22 2014-12-10 东莞市迈科科技有限公司 Preparation method of lithium ion battery material lithium vanadate
CN107623111A (en) * 2017-08-10 2018-01-23 三峡大学 A kind of composite lithium ion battery cathode material Li3VO4/ Ag and preparation method thereof
CN107845781A (en) * 2016-09-19 2018-03-27 微宏动力系统（湖州）有限公司 Lithium ion secondary battery cathode active material, its preparation method and lithium rechargeable battery

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130168611A1 (en) * 2010-10-27 2013-07-04 Ocean's King Lighting Science & Technology Co., Ltd., Composite electrode material, manufacturing method and application thereof
CN103474641A (en) * 2013-09-25 2013-12-25 三峡大学 Lithium ion battery anode material Li3VO4 and preparation method thereof
CN104201340A (en) * 2014-08-22 2014-12-10 东莞市迈科科技有限公司 Preparation method of lithium ion battery material lithium vanadate
CN107845781A (en) * 2016-09-19 2018-03-27 微宏动力系统（湖州）有限公司 Lithium ion secondary battery cathode active material, its preparation method and lithium rechargeable battery
CN107623111A (en) * 2017-08-10 2018-01-23 三峡大学 A kind of composite lithium ion battery cathode material Li3VO4/ Ag and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111834624A (en) * 2020-07-28 2020-10-27 湖南工学院 Two-dimensional LiV3O8Graphene composite material and preparation method and application thereof
CN114684783A (en) * 2022-04-11 2022-07-01 浙江大学 Additive capable of improving hydrogen storage performance of lithium magnesium nitrogen hydride and preparation and application thereof
CN114684783B (en) * 2022-04-11 2023-04-14 浙江大学 Additive capable of improving hydrogen storage performance of lithium magnesium nitrogen hydride and preparation and application thereof

Also Published As

Publication number Publication date
CN108565426B (en) 2020-09-15

Similar Documents

Publication Publication Date Title
CN103022462B (en) Preparation method for high-conductivity lithium titanate cathode material of lithium battery
CN101112979B (en) Solid-phase method for preparation of high-density spherical-like ferric phosphate lithium
CN104009210B (en) A kind of porous silicon/carbon composite material, Preparation method and use
CN102201576B (en) Porous carbon in situ composite lithium iron phosphate cathode material and preparation method thereof
CN104409698B (en) A kind of composite lithium ion battery cathode material and preparation method thereof
CN101591012B (en) Preparation method of lithium iron phosphate as cathode material of lithium ion battery
CN105845974A (en) Preparation method for positive electrode material NaFePO4/C of sodium ion battery
CN103972508B (en) A kind of inorganic doping/coating modification native graphite, preparation method and application thereof
CN106505199B (en) A kind of composite cathode material for lithium ion cell and preparation method thereof, lithium ion battery
CN101190785A (en) Preparation method of lithium ion battery positive pole material lithium iron phosphate and its product
CN102280638A (en) Vegetable protein carbon cladded nanometer lithium iron phosphate anode material and preparation method thereof
CN105742591A (en) Carbon coated Na3VO4 composite anode material and preparation method and application thereof
CN105762335A (en) Method for preparing carbon-clad lithium iron manganese phosphate material through two-step calcination
CN105731549A (en) Preparation method and application of high-purity lithium cobalt oxide cathode material
CN104810513B (en) A kind of lithium ion battery negative material and preparation method thereof
CN102208624A (en) Method for preparing carbon-coated LiFePO4 anode material by using low-temperature solid-phase method
CN103413940B (en) A kind of synthetic method of positive material nano lithium manganese phosphate of lithium ion battery
CN108002356A (en) δ-VOPO4Ultrathin nanometer piece and its controllable method for preparing and application
CN108565426A (en) Li3VO4/LiVO2Composite lithium ion battery cathode material and preparation method thereof
CN104993131B (en) A kind of lithium ion battery negative material NiS/Ni and preparation method thereof
CN106025180A (en) Lithium-ion battery cathode material GeO2/C with core-shell structure and preparation method thereof
CN107623111A (en) A kind of composite lithium ion battery cathode material Li3VO4/ Ag and preparation method thereof
CN101920953B (en) Preparation method of spherical anode material LiVPO4F
CN104900874B (en) Controllable LiFePO 4 material of a kind of crystal structure and preparation method thereof
CN106887589A (en) A kind of method for preparing carbon coating phosphoric acid vanadium lithium using biological carbon source

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