CN108134056A - A kind of composite cathode material for lithium ion cell and preparation method thereof - Google Patents

A kind of composite cathode material for lithium ion cell and preparation method thereof Download PDF

Info

Publication number
CN108134056A
CN108134056A CN201711222030.7A CN201711222030A CN108134056A CN 108134056 A CN108134056 A CN 108134056A CN 201711222030 A CN201711222030 A CN 201711222030A CN 108134056 A CN108134056 A CN 108134056A
Authority
CN
China
Prior art keywords
clad
silica
lithium ion
base
ion cell
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
CN201711222030.7A
Other languages
Chinese (zh)
Inventor
钟莎莎
王振峰
李金林
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.)
Shenzhen OptimumNano Energy Co Ltd
Original Assignee
Shenzhen OptimumNano Energy Co Ltd
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 Shenzhen OptimumNano Energy Co Ltd filed Critical Shenzhen OptimumNano Energy Co Ltd
Priority to CN201711222030.7A priority Critical patent/CN108134056A/en
Publication of CN108134056A publication Critical patent/CN108134056A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of or comprising active material
    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/362Composites
    • H01M4/364Composites as mixtures
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of or comprising active material
    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/362Composites
    • H01M4/366Composites as layered products
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of or comprising active material
    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/38Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/386Silicon or alloys based on silicon
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of or comprising active material
    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/58Selection 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
    • H01M4/583Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H01M4/587Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of or comprising active material
    • H01M4/62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624Electric conductive fillers
    • H01M4/625Carbon or graphite
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of or comprising active material
    • H01M4/62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/628Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The present invention provides a kind of composite cathode material for lithium ion cell, and including mixing material, the first clad and the second clad, first clad and the second clad coat the mixing material successively;The mass ratio of mixing material of the mixing material for silica-base material, graphene and graphite, the silica-base material and the graphite is 1:The mass ratio of (1~10), the graphite and the graphene is 100:(0.01~5);First clad is polyaniline, and second clad is polypyrrole.The present invention also provides a kind of preparation methods of composite cathode material for lithium ion cell.Composite cathode material for lithium ion cell provided by the invention and preparation method thereof, the electric conductivity of composite negative pole material is increased, alleviates the volume expansion of silica-base material, bilayer conductive polymer has good consistency, contact of the electrolyte with silica-base material is effectively isolated, cycle performance is excellent;Also, energy consumption is saved, simple for process, easily operated and industrialization.

Description

A kind of composite cathode material for lithium ion cell and preparation method thereof
【Technical field】
The present invention relates to battery material technical field more particularly to a kind of composite cathode material for lithium ion cell and its preparations Method.
【Background technology】
Lithium ion battery is because with the extensive use in each type electric tool of higher energy density and long-life.At present, often Lithium ion battery negative material is graphite-like carbon material, and graphite-like carbon material has relatively low removal lithium embedded current potential, suitable Reversible capacity, higher first charge discharge efficiency and cyclical stability, also, have many advantages, such as resourceful, cheap;But stone The theoretical specific capacity of ink is relatively low, about 372mAh/g so that the lithium ion battery using graphite as cathode cannot meet people to energy Metric density increasingly higher demands.
Silica-base material has a higher theoretical specific capacity (about 4200mAh/g), rich reserves and cheap;However, silicon About 300% volume change can be generated during Li insertion extraction, huge volume change causes the dusting of electrode material to shell It falls so that the connectivity between the particle and particle of silicon, between particle and collector is deteriorated, and loses electrical contact, causes capacity Rapid decay.
In consideration of it, it is really necessary to provide a kind of novel composite cathode material for lithium ion cell and preparation method thereof to overcome Disadvantages described above.
【Invention content】
The object of the present invention is to provide a kind of volume expansion that can effectively buffer silicon particle, the electric conductivity of raising material The composite cathode material for lithium ion cell and its system of lithium storage content, promotion energy density and good cycle that can, increase material Preparation Method.
To achieve these goals, the present invention provides a kind of composite cathode material for lithium ion cell, including mixing material, the One clad and the second clad, first clad and the second clad coat the mixing material successively;The mixing The mass ratio of mixing material of the material for silica-base material, graphene and graphite, the silica-base material and the graphite is 1:(1~ 10), the mass ratio of the graphite and the graphene is 100:(0.01~5);First clad is polyaniline, described the Two clads are polypyrrole.
In a preferred embodiment, the quality of the aniline monomer of first clad and the matter of the silica-base material It measures equal.
In a preferred embodiment, the quality of the pyrrole monomer of second clad and the matter of the silica-base material It measures equal.
The present invention also provides a kind of preparation methods of composite cathode material for lithium ion cell, include the following steps:Step 1: Graphene dispersion is taken to add graphite in distilled water, after being stirred, adds in silica-base material, stirring forms mixing material; The mass ratio of the silica-base material and the graphite is 1:The mass ratio of (1~10), the graphite and the graphene is 100: (0.01~5);Step 2:The mixed liquor of aniline monomer and HCl solution is taken to add in the mixing material prepared to step 1, is stirred The mixed liquor of ammonium persulfate and HCl solution is added afterwards, reaction a period of time, the primary containing the first clad polyaniline is made Mixed liquor;Step 3:The mixed liquor of pyrrole monomer and HCl solution is taken to add in the primary mixed liquor prepared to step 2, is stirred The mixed liquor of ammonium persulfate and HCl solution is added afterwards, reaction a period of time, the whole grade containing the second clad polypyrrole is made Mixed liquor;Step 4:Grade mixed liquor whole made from step 3 is filtered, filtration product is washed and dried, and is made most Whole composite negative pole material.
In a preferred embodiment, the quality of the aniline monomer in the step 2 and the quality of the silica-base material It is equal.
In a preferred embodiment, the quality of the pyrrole monomer in the step 3 and the quality of the silica-base material It is equal.
In a preferred embodiment, the ammonium persulfate and the mass ratio of aniline monomer added in the step 2 is 1: 1。
In a preferred embodiment, the ammonium persulfate and the mass ratio of pyrrole monomer added in the step 3 is 1: 1。
In a preferred embodiment, a concentration of 2mol/L of the step 2 and the HCl solution in step 3.
In a preferred embodiment, the grain size of the silica-base material in the step 1 is 10~200nm.
Compared with the prior art, composite cathode material for lithium ion cell provided by the invention and preparation method thereof, using stone Black alkene forms conductive network, increases the electric conductivity of composite negative pole material, and the embedding lithium function of graphene is conducive to composite negative pole material Expect the increase of capacity;It is coated using double-deck polyaniline/polypyrrole, using the good flexibility of clad, alleviates silicon substrate The volume expansion of material, bilayer conductive polymer have good consistency, are effectively isolated contact of the electrolyte with silica-base material, follow Ring is had excellent performance;Also, material is coated using chemical oxidization method, saves energy consumption, it is simple for process, it is easily operated and industrial Change.
【Description of the drawings】
Fig. 1 is the charging and discharging curve of button cell prepared by the composite negative pole material assembling prepared with the embodiment of the present invention 1;
Fig. 2 is the cyclic curve of button cell prepared by the composite negative pole material assembling prepared with the embodiment of the present invention 1.
【Specific embodiment】
It is clear in order to be more clear the purpose of the present invention, technical solution and advantageous effects, below in conjunction with attached drawing and Specific embodiment, the present invention will be described in further detail.It should be understood that the specific implementation described in this specification Mode is not intended to limit the present invention just for the sake of explaining the present invention.
The present invention provides a kind of composite cathode material for lithium ion cell, including mixing material, the first clad and the second packet Coating, first clad and the second clad coat the mixing material successively;The mixing material is silica-base material, stone The mass ratio of the mixing material of black alkene and graphite, the silica-base material and the graphite is 1:(1~10), the graphite with it is described The mass ratio of graphene is 100:(0.01~5);First clad is polyaniline, and second clad is polypyrrole. Specifically, the quality of the aniline monomer of first clad is equal with the quality of the silica-base material, second clad Pyrrole monomer quality it is equal with the quality of the silica-base material.
The present invention also provides a kind of preparation methods of composite cathode material for lithium ion cell, include the following steps:
Step 1:Graphene dispersion is taken to add graphite in distilled water, after being stirred, silica-base material is added in, stirs It mixes, forms mixing material;The mass ratio of the silica-base material and the graphite is 1:(1~10), the graphite and the graphite The mass ratio of alkene is 100:(0.01~5);
Step 2:The mixed liquor of aniline monomer and HCl solution is taken to add in the mixing material prepared to step 1, after stirring The mixed liquor of ammonium persulfate and HCl solution is added, reaction a period of time is made the primary containing the first clad polyaniline and mixes Close liquid;
Step 3:The mixed liquor of pyrrole monomer and HCl solution is taken to add in the primary mixed liquor prepared to step 2, is stirred The mixed liquor of ammonium persulfate and HCl solution is added afterwards, reaction a period of time, the whole grade containing the second clad polypyrrole is made Mixed liquor;
Step 4:Grade mixed liquor whole made from step 3 is filtered, filtration product is washed and dried, and is made most Whole composite negative pole material.
Specifically, the grain size of the silica-base material in the step 1 is 10~200nm.Aniline monomer in the step 2 Quality it is equal with the quality of the silica-base material;The quality of pyrrole monomer in the step 3 and the matter of the silica-base material It measures equal.The ammonium persulfate and the mass ratio of aniline monomer added in the step 2 is 1:1;The mistake added in the step 3 The mass ratio of ammonium sulfate and pyrrole monomer is 1:1.A concentration of 2mol/L of HCl solution in the step 2 and step 3.
Embodiment 1:
(1) 0.05g graphenes is taken to be scattered in distilled water by 15h mechanical agitations and 20h ultrasonic agitations, add 50g Graphite after carrying out 4h mechanical agitations, adds in the silica-base material that 8g grain sizes are 10~200nm, by 2h mechanical agitations, forms mixing Material;
(2) mixed liquor of the HCl solution of 8g aniline monomers and a concentration of 2mol/L of 100g is taken to add in the mixing prepared to (1) In material, the mixed liquor of 8g ammonium persulfates and the HCl solution of a concentration of 2mol/L of 100g is added after mechanical agitation 1h, is reacted The primary mixed liquor containing the first clad polyaniline is made in 3h;
(3) mixed liquor of the HCl solution of 8g pyrrole monomers and a concentration of 2mol/L of 100g is taken to add in primary prepared by (2) to mix It closes in liquid, the mixed liquor of 8g ammonium persulfates and the HCl solution of a concentration of 2mol/L of 100g, reaction is added after mechanical agitation 1h The whole grade mixed liquor containing the second clad polypyrrole is made in 3h;
(4) grade mixed liquor whole made from (3) is filtered, filtration product is washed and dried, and is made final and is answered Close negative material.
Embodiment 2:
(1) 0.02g graphenes is taken to be scattered in distilled water by 10h mechanical agitations and 15h ultrasonic agitations, add 50g Graphite after carrying out 3h mechanical agitations, adds in the silica-base material that 5g grain sizes are 10~200nm, by 2h mechanical agitations, forms mixing Material;
(2) mixed liquor of the HCl solution of 5g aniline monomers and a concentration of 2mol/L of 100g is taken to add in the mixing prepared to (1) In material, the mixed liquor of 5g ammonium persulfates and the HCl solution of a concentration of 2mol/L of 100g is added after mechanical agitation 2h, is reacted The primary mixed liquor containing the first clad polyaniline is made in 2h;
(3) mixed liquor of the HCl solution of 5g pyrrole monomers and a concentration of 2mol/L of 100g is taken to add in primary prepared by (2) to mix It closes in liquid, the mixed liquor of 5g ammonium persulfates and the HCl solution of a concentration of 2mol/L of 100g, reaction is added after mechanical agitation 0.5h The whole grade mixed liquor containing the second clad polypyrrole is made in 2h;
(4) grade mixed liquor whole made from (3) is filtered, filtration product is washed and dried, and is made final and is answered Close negative material.
The preparation of cathode pole piece and the assembling of button cell and test:
It is prepared by negative plate:It is 80 in mass ratio:10:10 weigh respectively the embodiment of the present invention 1 preparation composite negative pole material, Carbon black and binding agent (PVDF solution), solvent NMP are uniformly mixed to get negative electrode slurry.Negative electrode slurry is coated on collector On aluminium foil, the dry 12h of 120 DEG C of vacuum, punching, the disk of obtained a diameter of 10mm.
Electrolyte:The LiPF of 1.0mol/L6, solvent is ethylene carbonate and dimethyl carbonate, and the two volume ratio is 1:1. Positive plate:Metal lithium sheet;Diaphragm:Polypropylene micropore diaphragm.
Battery assembles:According to negative electrode casing-shrapnel-gasket-positive plate-electrolyte-diaphragm-negative plate-gasket- Button cell is packaged by the sequence of anode cover, and whole process is completed in the glove box filled with argon gas.
Battery testing:(25 DEG C) test button cells at room temperature, test voltage section are 0.01~2V.
Fig. 1 is the charging and discharging curve of button cell prepared by the composite negative pole material assembling prepared with the embodiment of the present invention 1; As shown in Figure 1, the high rate performance of button cell is good, this is because graphene can significantly improve the electric conductivity of silicon particle Can, increase the conductive capability of negative material, made with the composite material negative material active material lithium ion battery it is forthright again It can be greatly improved;Also, using graphene can embedding lithium characteristic further increase the lithium storage content of composite negative pole material, Improve lithium ion battery energy density.
Fig. 2 is the cyclic curve of button cell prepared by the composite negative pole material assembling prepared with the embodiment of the present invention 1;By Fig. 2 it is found that button cell recycle 563 weeks after, capacity retention ratio 89.56%, cycle performance is excellent;This is because using flexible The polyaniline and polypyrrole spent carry out the cladding of material, can buffer the volume expansion of silicon particle, reduce the dusting journey of silicon particle Degree, meanwhile, double-deck polyaniline/polypyrrole clad structure is fine and close, it is suppressed that electrolyte is contacted with silicon particle, irreversible capacity loss Weakened, cycle performance is excellent.
Composite cathode material for lithium ion cell provided by the invention and preparation method thereof forms conductive mesh using graphene Network, increases the electric conductivity of composite negative pole material, and the embedding lithium function of graphene is conducive to the increase of composite negative pole material capacity;It adopts It is coated with double-deck polyaniline/polypyrrole, using the good flexibility of clad, alleviates the volume expansion of silica-base material, it is double Layer conducting polymer has good consistency, is effectively isolated contact of the electrolyte with silica-base material, cycle performance is excellent;And And material is coated using chemical oxidization method, energy consumption is saved, simple for process, easily operated and industrialization.
The present invention is not restricted to described in specification and embodiment, therefore for the personnel of familiar field Other advantage and modification is easily implemented, therefore in the essence of the universal limited without departing substantially from claim and equivalency range In the case of refreshing and range, the present invention is not limited to specific details, representative equipment and diagrams shown and described herein Example.

Claims (10)

1. a kind of composite cathode material for lithium ion cell, it is characterised in that:Including mixing material, the first clad and the second cladding Layer, first clad and the second clad coat the mixing material successively;The mixing material is silica-base material, graphite The mass ratio of the mixing material of alkene and graphite, the silica-base material and the graphite is 1:(1~10), the graphite and the stone The mass ratio of black alkene is 100:(0.01~5);First clad is polyaniline, and second clad is polypyrrole.
2. composite cathode material for lithium ion cell as described in claim 1, it is characterised in that:The aniline of first clad The quality of monomer is equal with the quality of the silica-base material.
3. composite cathode material for lithium ion cell as claimed in claim 2, it is characterised in that:The pyrroles of second clad The quality of monomer is equal with the quality of the silica-base material.
4. a kind of preparation method of composite cathode material for lithium ion cell, it is characterised in that:Include the following steps:
Step 1:Graphene dispersion is taken to add graphite in distilled water, after being stirred, adds in silica-base material, stirring, shape Into mixing material;The mass ratio of the silica-base material and the graphite is 1:(1~10), the matter of the graphite and the graphene Amount is than being 100:(0.01~5);
Step 2:The mixed liquor of aniline monomer and HCl solution is taken to add in the mixing material prepared to step 1, is added again after stirring Enter the mixed liquor of ammonium persulfate and HCl solution, the primary mixing containing the first clad polyaniline is made in reaction a period of time Liquid;
Step 3:The mixed liquor of pyrrole monomer and HCl solution is taken to add in the primary mixed liquor prepared to step 2, after stirring again The mixed liquor of ammonium persulfate and HCl solution is added in, the whole grade mixing containing the second clad polypyrrole is made in reaction a period of time Liquid;
Step 4:Grade mixed liquor whole made from step 3 is filtered, filtration product is washed and dried, and is made finally Composite negative pole material.
5. the preparation method of composite cathode material for lithium ion cell as claimed in claim 4, it is characterised in that:The step 2 In aniline monomer quality it is equal with the quality of the silica-base material.
6. the preparation method of composite cathode material for lithium ion cell as claimed in claim 5, it is characterised in that:The step 3 In pyrrole monomer quality it is equal with the quality of the silica-base material.
7. the preparation method of composite cathode material for lithium ion cell as claimed in claim 6, it is characterised in that:The step 2 The ammonium persulfate of middle addition and the mass ratio of aniline monomer are 1:1.
8. the preparation method of composite cathode material for lithium ion cell as claimed in claim 7, it is characterised in that:The step 3 The ammonium persulfate of middle addition and the mass ratio of pyrrole monomer are 1:1.
9. the preparation method of composite cathode material for lithium ion cell as claimed in claim 8, it is characterised in that:The step 2 And a concentration of 2mol/L of the HCl solution in step 3.
10. the preparation method of composite cathode material for lithium ion cell as claimed in claim 9, it is characterised in that:The step The grain size of silica-base material in one is 10~200nm.
CN201711222030.7A 2017-11-29 2017-11-29 A kind of composite cathode material for lithium ion cell and preparation method thereof Pending CN108134056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711222030.7A CN108134056A (en) 2017-11-29 2017-11-29 A kind of composite cathode material for lithium ion cell and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711222030.7A CN108134056A (en) 2017-11-29 2017-11-29 A kind of composite cathode material for lithium ion cell and preparation method thereof

Publications (1)

Publication Number Publication Date
CN108134056A true CN108134056A (en) 2018-06-08

Family

ID=62388849

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711222030.7A Pending CN108134056A (en) 2017-11-29 2017-11-29 A kind of composite cathode material for lithium ion cell and preparation method thereof

Country Status (1)

Country Link
CN (1) CN108134056A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109935779A (en) * 2019-04-18 2019-06-25 电子科技大学 A kind of ferrous disulfide positive electrode and preparation method thereof and alkali metal-ion battery
CN110707316A (en) * 2019-10-16 2020-01-17 北京卫蓝新能源科技有限公司 Silicon-based lithium ion battery cathode material and preparation method thereof
CN111224078A (en) * 2018-11-27 2020-06-02 广州汽车集团股份有限公司 Silicon-based composite negative electrode material, preparation method thereof and lithium ion battery negative electrode
CN112687854A (en) * 2020-12-17 2021-04-20 广东微电新能源有限公司 Silicon monoxide composite negative electrode material of lithium ion battery and preparation method and application thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111224078A (en) * 2018-11-27 2020-06-02 广州汽车集团股份有限公司 Silicon-based composite negative electrode material, preparation method thereof and lithium ion battery negative electrode
WO2020107672A1 (en) * 2018-11-27 2020-06-04 广州汽车集团股份有限公司 Silicon-based composite negative electrode material and preparation method thereof, and negative electrode of lithium ion battery
CN109935779A (en) * 2019-04-18 2019-06-25 电子科技大学 A kind of ferrous disulfide positive electrode and preparation method thereof and alkali metal-ion battery
CN110707316A (en) * 2019-10-16 2020-01-17 北京卫蓝新能源科技有限公司 Silicon-based lithium ion battery cathode material and preparation method thereof
CN110707316B (en) * 2019-10-16 2021-05-25 北京卫蓝新能源科技有限公司 Silicon-based lithium ion battery cathode material and preparation method thereof
CN112687854A (en) * 2020-12-17 2021-04-20 广东微电新能源有限公司 Silicon monoxide composite negative electrode material of lithium ion battery and preparation method and application thereof

Similar Documents

Publication Publication Date Title
CN108134056A (en) A kind of composite cathode material for lithium ion cell and preparation method thereof
CN104134818B (en) High-energy-density lithium ion battery and preparation method thereof
CN107226475B (en) Potassium ion battery positive electrode material, preparation method thereof and potassium ion battery
CN103855431B (en) A kind of chemical synthesizing method improving cycle performance of lithium ion battery
CN105449166B (en) A kind of preparation method of sodium-ion battery cathode pole piece
CN105161309B (en) Lithium ion hybrid capacitors
CN103236530A (en) Silicon-carbon composite material, preparation method thereof, and lithium ion battery containing material
CN110767880A (en) Lithium supplement slurry for lithium secondary battery and preparation method of lithium secondary battery
CN107275571A (en) A kind of full battery of lithium sulfide/nano-silicone wire/carbon and preparation method and application
CN107785584A (en) A kind of sodium-ion battery anode additive NaCrO2/ C and its preparation method and application
CN106410267A (en) Silicon-based lithium ion secondary battery with high specific energy and preparation method of lithium ion secondary battery
CN107706393B (en) High-capacity solid lithium ion battery and preparation method thereof
CN106532031B (en) A kind of Li4Ti5O12Negative electrode material and its manufactured lithium titanate battery
CN107910509A (en) A kind of preparation method of high specific energy, long-life Li S cell positive materials
CN106067548B (en) A kind of SnO2/ iron tungstate lithium/carbon composite nano-material and preparation method thereof
CN111276678B (en) Single-layer graphene coated FeS2Preparation method and application of carbon nanotube material
CN102290566A (en) Lithium battery anode preparing method and lithium battery
CN105206824B (en) A kind of preparation method of height ratio capacity lithium-rich anode material
CN102195035A (en) Positive material for lithium ion battery and lithium ion battery with same
CN105244475A (en) Composite spinel material, preparing method thereof and application thereof
CN110212164A (en) A method of lithium ion battery energy density is improved using lithium salts
CN109987607A (en) Mesoporous silicon/cobalt disilicide composite microsphere material and its preparation method and application
CN111653732A (en) Positive electrode material, positive electrode plate and lithium ion battery
CN107910553A (en) Mesocarbon microspheres method of modifying and its application as cell negative electrode material
CN106558727B (en) Lithium-sulfur battery

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication