CN103682413A - High-rate long-cycle-life lithium iron phosphate battery and preparation method thereof - Google Patents
High-rate long-cycle-life lithium iron phosphate battery and preparation method thereof Download PDFInfo
- Publication number
- CN103682413A CN103682413A CN201310732225.1A CN201310732225A CN103682413A CN 103682413 A CN103682413 A CN 103682413A CN 201310732225 A CN201310732225 A CN 201310732225A CN 103682413 A CN103682413 A CN 103682413A
- Authority
- CN
- China
- Prior art keywords
- conductive
- ferric phosphate
- lithium cell
- high magnification
- long circulation
- 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
Links
Images
Classifications
-
- 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1397—Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- 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
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a high-rate long-cycle-life lithium iron phosphate battery and a preparation method thereof. For cathode paste, lithium iron phosphate is used as the active material, and the mixture of conductive carbon black, KS-6 and a carbon nano tube is used as the conductive agent; for anode paste, mesocarbon microbeads are used as the active material and the mixture of conductive carbon black and conductive carbon fibers is used as the conductive agent. In the preparation method, a three-dimensional mixer and a high-speed stirring machine are used to achieve uniform dispersion of the pastes. A theoretical basis for solving the problems of low high-rate discharge capacity and safety of power batteries is provided, and the application field of the power batteries is broadened.
Description
Technical field
The present invention relates to a kind of lithium rechargeable battery manufacturing technology field, relate in particular to a kind of high magnification, long circulation life ferric phosphate lithium cell and preparation method thereof.
Background technology
Because LiFePO 4 material possesses that raw material sources is abundant, the plurality of advantages such as high, the Heat stability is good of environment-protecting asepsis, operating voltage, be considered to the desirable positive electrode of lithium ion battery of new generation.In recent years, lithium iron phosphate dynamic battery with its be perfectly safe reliably, overlength cycle life, the advantage such as discharge platform enjoys global lithium battery expert's favor stably, has obtained development rapidly.Can say that lithium iron phosphate dynamic battery has solved the security hidden trouble of cobalt acid lithium and lithium manganate battery completely, leads Chinese lithium battery industry to march toward the new epoch.Especially excellent cycle performance, the lithium ion battery traditional with other compared, and lithium iron phosphate dynamic battery 1C electric discharge is used and is reached 2000 times, and capability retention is not less than 80%.Electrokinetic cell is more and more higher to the requirement of high rate performance, cause LiFePO 4 material performance requirement to improve, grain refine is nanometer even, for meeting the instructions for use of electrokinetic cell, solve the problem of lithium ion battery high-multiplying power discharge, develop the ferric phosphate lithium cell of a kind of high-multiplying power discharge, long circulation life.
Summary of the invention
The object of this invention is to provide a kind of high magnification, long circulation life ferric phosphate lithium cell and preparation method thereof, for solution electrokinetic cell high-multiplying power discharge capacity is low and safety problem provides theoretical foundation, further widen the application of electrokinetic cell.
For achieving the above object, the technical solution used in the present invention is:
A kind of high magnification, long circulation life ferric phosphate lithium cell, it is characterized in that: the active material of anode sizing agent adopts LiFePO4, conductive agent is conductive carbon black, electrically conductive graphite, carbon nanotube mixture, the active material of cathode size adopts carbonaceous mesophase spherules, and conductive agent is conductive carbon black, conductive carbon fibre mixture.
According to described high magnification, long circulation life ferric phosphate lithium cell, it is characterized in that: the percentage by weight of described anode sizing agent is LiFePO4 84～92wt% conductive agent 6～15wt%, binding agent 3～10wt%; Described cathode size proportioning is carbonaceous mesophase spherules 88～94wt%, conductive agent 4～10wt%, binding agent 3～8wt%.
According to described high magnification, long circulation life ferric phosphate lithium cell, it is characterized in that: what the grain shape of described LiFePO4 was disperse is spherical, particle diameter is 200～300nm, and specific area is 20～30m2/g.
According to described high magnification, long circulation life ferric phosphate lithium cell, it is characterized in that: the diameter of described carbon nano-tube is 42nm, length is 7.2 μ m.
According to described high magnification, long circulation life ferric phosphate lithium cell, it is characterized in that: described MCMB is through modification, and particle diameter is 11-16 μ m, and what grain shape was disperse is spherical.
According to described high magnification, long circulation life ferric phosphate lithium cell, it is characterized in that: described carbon fiber diameter is about 0.1 μ m, length is 6～8 μ m.
A kind of preparation method of described lithium battery, it is characterized in that: the method that adopts three-dimensional material mixer and homogenizer to combine realizes the dispersed of slurry, this three-dimensional material mixer speed of mainshaft is 10～30r/min, homogenizer low speed revolution rotating speed is 15～30r/min, high speed dispersion rotating speed is 1000～2500r/min, and vacuum degree is-0.08MPa～-0.1Mpa.
Advantageous effect of the present invention is: 1, utilize three-dimensional material mixer evenly to mix in advance both positive and negative polarity dry powder, shorten slurry mixing time, solve the homodisperse problem of difficulty of powder body material, improve the consistency of slurry.2, the battery that prepared by the present invention can be realized 30C electric discharge, and it is more than 90% that capability retention is rated capacity.3, the battery table that prepared by the present invention reveals excellent cycle performance, and the 10C discharge cycles life-span surpasses 550 times, and the 20C discharge cycles life-span is over 300 times.
Accompanying drawing explanation
Fig. 1 is the SEM Electronic Speculum figure of nano-scale lithium iron phosphate.
Fig. 2 is positive plate shape figure of the present invention.
Fig. 3 is negative plate shape figure of the present invention.
Fig. 4 is that 18650-1100mAh-3.3V battery is at 10C, 20C, 30C discharge curve.
Fig. 5 is that 18650-1100mAh-3.3V battery is at 10C, 20C cyclic curve figure.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
The present invention as Figure 1-5, a kind of high magnification, long circulation life ferric phosphate lithium cell, it is characterized in that: the active material of anode sizing agent adopts LiFePO4, conductive agent is conductive carbon black, electrically conductive graphite, carbon nanotube mixture, the active material of cathode size adopts carbonaceous mesophase spherules, and conductive agent is conductive carbon black, conductive carbon fibre mixture.According to described high magnification, long circulation life ferric phosphate lithium cell, it is characterized in that: the percentage by weight of described anode sizing agent is LiFePO4 84～92wt% conductive agent 6～15wt%, binding agent 3～10wt%; Described cathode size proportioning is carbonaceous mesophase spherules (MCMB) 88～94wt%, conductive agent 4～10wt%, binding agent 3～8wt%.According to described high magnification, long circulation life ferric phosphate lithium cell, it is characterized in that: what the grain shape of described LiFePO4 was disperse is spherical, particle diameter is 200～300nm, and specific area is 20～30m
2/ g.According to described high magnification, long circulation life ferric phosphate lithium cell, it is characterized in that: the diameter of described carbon nano-tube is 42nm, length is 7.2 μ m.According to described high magnification, long circulation life ferric phosphate lithium cell, it is characterized in that: described MCMB is through modification, and particle diameter is 11-16 μ m, and what grain shape was disperse is spherical.According to described high magnification, long circulation life ferric phosphate lithium cell, it is characterized in that: described carbon fiber diameter is about 0.1 μ m, length is 6～8 μ m.The preparation method of lithium battery described in a kind of claim 1-6, it is characterized in that: the method that adopts three-dimensional material mixer and homogenizer to combine realizes the dispersed of slurry, this three-dimensional material mixer speed of mainshaft is 10～30r/min, homogenizer low speed revolution rotating speed is 15～30r/min, high speed dispersion rotating speed is 1000～2500r/min, and vacuum degree is-0.08MPa～-0.1Mpa.
The preparation process of 18650-1100mAh-3.3V high-multiplying-power battery of take below illustrates as example, and as shown in Figure 1, the concrete preparation method of battery is as follows for the positive electrode that battery adopts:
Anodal each constituent mass ratio: LiFePO4:Super-P:KS-6:CNTS:PVDF5130:NMP=88:3:2:
2:5:122。First PVDF5130 is dissolved in NMP, stirs 4h, then will after LiFePO 4 material and conductive agent mixing, adopt the dispersed stirring of three-dimensional material mixer, the speed of mainshaft is 25r/min, and mixing time is 100min.The material mixing is joined in glue, high-speed stirred 5h disperses again, and low speed revolution rotating speed is 20r/min, and high speed dispersion rotating speed is 2000r/min, and vacuum degree is-0.08MPa.The slurry being stirred sieves and is coated with after vacuum froth breaking, and through super-dry, roll-in, cut and make positive plate, lug material is aluminium strip, and width is 6mm, and the quantity of lug is 2, and the profile of pole piece as shown in Figure 2.
Each constituent mass ratio: MCMB:Super-P:VGCF:CMC:SBR:H2O=92:2:2:1.5:2.5 of negative pole:
130。First CMC is dissolved in the water, stir 2～3h, then will after MCMB and conductive agent mixing, adopt the dispersed stirring of three-dimensional material mixer, the speed of mainshaft is 20r/min, and mixing time is 80min, then the material mixing is joined in glue, high-speed stirred 3h disperses, low speed revolution rotating speed is 15r/min, and high speed dispersion rotating speed is 1600r/min, and vacuum degree is-0.08MPa.The slurry being stirred sieves and is coated with after vacuum froth breaking, and through super-dry, roll-in, cut and make negative plate, lug material is copper nickel composite band, and width is 5mm, and the quantity of lug is 3, and the profile of pole piece as shown in Figure 3.
The positive/negative plate preparing is joined to membrane coil and be coiled into cylindrical 18650 battery cores, toast 72h after entering shell, then assemble, detect.In assembling process, under inert gas shielding, carry out, electrolyte adopts LiPF6 organic solvent system, and reservoir quantity is 6.2g, and barrier film adopts individual layer PE structure, and thickness is 20 μ m.
The battery size of preparation is 18650-1100mAh-3.3V, and as shown in Figure 4,30C discharge capacitance is rated capacity to its high-rate discharge ability 90%.As shown in Figure 5, the 10C discharge cycles life-span surpasses 500 times cycle performance, and the 20C discharge cycles life-span is over 300 times.
A kind of high magnification, long circulation life ferric phosphate lithium cell and preparation method thereof, positive active material adopts LiFePO4, conductive agent is conductive carbon black (Super-P), electrically conductive graphite (KS-6), carbon nano-tube (CNTS) mixture, negative electrode active material adopts the carbonaceous mesophase spherules (MCMB) of modification, conductive agent is conductive carbon black (Super-P), conductive carbon fibre (VGCF) mixture, utilizes three-dimensional material mixer and homogenizer to prepare slurry.This lithium iron phosphate particles pattern comparison rule, spherical for disperse, particle diameter is 200～300nm, and specific area is 20～30m2/g, and the spherical structure of this rule is conducive to improve the volumetric specific energy of positive electrode.This carbon nano-tube (CNTS) diameter is 42nm, and length is 7.2 μ m, can be filled between active material particle and form continuous conductive network after adding, and improves the conductivity of electrode material.This MCMB is through modification, and particle diameter is 11-16 μ m, presents regular spherical structure, and this is not only conducive to improve the volumetric specific energy of negative material, and lithium ion can spread towards all directions, improves the high-rate discharge capacity of material.This carbon fiber (VGCF) diameter is about 0.1 μ m, and length is 6～8 μ m, adds rear easy formation space conductive network, improves the conductivity of electrode.The method that adopts three-dimensional material mixer and homogenizer to combine realizes the dispersed of slurry, this three-dimensional material mixer speed of mainshaft is 10～30r/min, homogenizer low speed revolution rotating speed is 15～30r/min, high speed dispersion rotating speed is 1000～2500r/min, and vacuum degree is-0.08MPa～-0.1MPa.Anode sizing agent proportioning is LiFePO4 84～92wt%, conductive agent 6～15wt%, binding agent 3～10wt%.Cathode size proportioning is carbonaceous mesophase spherules (MCMB) 88～94wt%, conductive agent 4～10wt%, binding agent 3～8wt%.
Claims (7)
1. a high magnification, long circulation life ferric phosphate lithium cell, it is characterized in that: the active material of anode sizing agent adopts LiFePO4, conductive agent is conductive carbon black, electrically conductive graphite, carbon nanotube mixture, the active material of cathode size adopts carbonaceous mesophase spherules, and conductive agent is conductive carbon black, conductive carbon fibre mixture.
2. high magnification according to claim 1, long circulation life ferric phosphate lithium cell, is characterized in that: the percentage by weight of described anode sizing agent is LiFePO4 84～92wt% conductive agent 6～15wt%, binding agent 3～10wt%; Described cathode size proportioning is carbonaceous mesophase spherules (MCMB) 88～94wt%, conductive agent 4～10wt%, binding agent 3～8wt%.
3. high magnification according to claim 1, long circulation life ferric phosphate lithium cell, is characterized in that: what the grain shape of described LiFePO4 was disperse is spherical, and particle diameter is 200～300nm, and specific area is 20～30m
2/ g.
4. high magnification according to claim 1, long circulation life ferric phosphate lithium cell, is characterized in that: the diameter of described carbon nano-tube is 42nm, and length is 7.2 μ m.
5. high magnification according to claim 1, long circulation life ferric phosphate lithium cell, is characterized in that: described MCMB is through modification, and particle diameter is 11-16 μ m, and what grain shape was disperse is spherical.
6. high magnification according to claim 1, long circulation life ferric phosphate lithium cell, is characterized in that: described carbon fiber diameter is about 0.1 μ m, and length is 6～8 μ m.
7. the preparation method of lithium battery described in a claim 1-6, it is characterized in that: the method that adopts three-dimensional material mixer and homogenizer to combine realizes the dispersed of slurry, this three-dimensional material mixer speed of mainshaft is 10～30r/min, homogenizer low speed revolution rotating speed is 15～30r/min, high speed dispersion rotating speed is 1000～2500r/min, and vacuum degree is-0.08MPa～-0.1Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310732225.1A CN103682413A (en) | 2013-12-27 | 2013-12-27 | High-rate long-cycle-life lithium iron phosphate battery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310732225.1A CN103682413A (en) | 2013-12-27 | 2013-12-27 | High-rate long-cycle-life lithium iron phosphate battery and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103682413A true CN103682413A (en) | 2014-03-26 |
Family
ID=50319224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310732225.1A Pending CN103682413A (en) | 2013-12-27 | 2013-12-27 | High-rate long-cycle-life lithium iron phosphate battery and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103682413A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600281A (en) * | 2014-12-30 | 2015-05-06 | 山东神工海特电子科技有限公司 | Preparation method of lithium manganate material and method for preparing battery from lithium manganate material |
| CN105514388A (en) * | 2016-01-08 | 2016-04-20 | 欧赛新能源科技股份有限公司 | Lithium ion positive pole material and mixing method |
| CN105591110A (en) * | 2015-12-18 | 2016-05-18 | 山东精工电子科技有限公司 | Preparation method of low-temperature lithium iron phosphate battery |
| CN106159265A (en) * | 2016-09-14 | 2016-11-23 | 成都雅骏新能源汽车科技股份有限公司 | The preparation method of the anode slurry of lithium iron phosphate battery of graphene-containing combined conductive agent |
| CN106784812A (en) * | 2016-11-21 | 2017-05-31 | 深圳市沃特玛电池有限公司 | A kind of preparation method of ferric phosphate lithium cell |
| CN106784656A (en) * | 2016-11-29 | 2017-05-31 | 常州普莱德新能源电池科技有限公司 | A kind of water system LiMn2O4 slurry and preparation method thereof |
| CN107768727A (en) * | 2017-10-13 | 2018-03-06 | 江苏海四达电源股份有限公司 | High temperature circulation lithium iron phosphate dynamic battery and its manufacture method |
| CN108258245A (en) * | 2018-01-03 | 2018-07-06 | 中航锂电（洛阳）有限公司 | A kind of combined conductive agent, lithium ion cell positive and lithium ion battery |
| CN111505502A (en) * | 2020-04-17 | 2020-08-07 | 北京航空航天大学 | Lithium ion battery aging test method under time-varying cycle working condition based on micro mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335366A (en) * | 2008-07-23 | 2008-12-31 | 东莞市迈科科技有限公司 | Lithium iron phosphate high multiplying polymer battery |
| CN101409369A (en) * | 2008-11-14 | 2009-04-15 | 东莞市迈科科技有限公司 | Large-capacity high power polymer ferric lithium phosphate power cell and preparation method thereof |
| CN102403531A (en) * | 2011-11-15 | 2012-04-04 | 山东精工电子科技有限公司 | High rate lithium iron phosphate cell and preparation method thereof |
-
2013
- 2013-12-27 CN CN201310732225.1A patent/CN103682413A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335366A (en) * | 2008-07-23 | 2008-12-31 | 东莞市迈科科技有限公司 | Lithium iron phosphate high multiplying polymer battery |
| CN101409369A (en) * | 2008-11-14 | 2009-04-15 | 东莞市迈科科技有限公司 | Large-capacity high power polymer ferric lithium phosphate power cell and preparation method thereof |
| CN102403531A (en) * | 2011-11-15 | 2012-04-04 | 山东精工电子科技有限公司 | High rate lithium iron phosphate cell and preparation method thereof |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600281A (en) * | 2014-12-30 | 2015-05-06 | 山东神工海特电子科技有限公司 | Preparation method of lithium manganate material and method for preparing battery from lithium manganate material |
| CN105591110A (en) * | 2015-12-18 | 2016-05-18 | 山东精工电子科技有限公司 | Preparation method of low-temperature lithium iron phosphate battery |
| CN105514388A (en) * | 2016-01-08 | 2016-04-20 | 欧赛新能源科技股份有限公司 | Lithium ion positive pole material and mixing method |
| CN106159265A (en) * | 2016-09-14 | 2016-11-23 | 成都雅骏新能源汽车科技股份有限公司 | The preparation method of the anode slurry of lithium iron phosphate battery of graphene-containing combined conductive agent |
| CN106159265B (en) * | 2016-09-14 | 2019-04-09 | 成都雅骏新能源汽车科技股份有限公司 | The preparation method of the anode slurry of lithium iron phosphate battery of containing graphene combined conductive agent |
| CN106784812A (en) * | 2016-11-21 | 2017-05-31 | 深圳市沃特玛电池有限公司 | A kind of preparation method of ferric phosphate lithium cell |
| CN106784656A (en) * | 2016-11-29 | 2017-05-31 | 常州普莱德新能源电池科技有限公司 | A kind of water system LiMn2O4 slurry and preparation method thereof |
| CN107768727A (en) * | 2017-10-13 | 2018-03-06 | 江苏海四达电源股份有限公司 | High temperature circulation lithium iron phosphate dynamic battery and its manufacture method |
| CN108258245A (en) * | 2018-01-03 | 2018-07-06 | 中航锂电（洛阳）有限公司 | A kind of combined conductive agent, lithium ion cell positive and lithium ion battery |
| CN111505502A (en) * | 2020-04-17 | 2020-08-07 | 北京航空航天大学 | Lithium ion battery aging test method under time-varying cycle working condition based on micro mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103682413A (en) | High-rate long-cycle-life lithium iron phosphate battery and preparation method thereof | |
| KR101900780B1 (en) | Porous carbon nanotube microsphere and preparation method therefor and application thereof, lithium metal-skeleton carbon composite material and preparation method therefor, negative electrode, and battery | |
| CN106229505B (en) | A kind of high-density spherical nano lithium iron phosphate material and preparation method thereof and lithium ion battery comprising it | |
| CN102544502B (en) | Anode and cathode conductive additive for secondary lithium battery, method for preparing conductive additive, and method for preparing secondary lithium battery | |
| CN101510625B (en) | Ultra-high magnification lithium ion battery | |
| CN103456929B (en) | A kind of lithium sulfur battery anode material and preparation method thereof | |
| CN104577012A (en) | Rate cycling improved lithium iron phosphate battery and preparation method thereof | |
| CN111224078A (en) | Silicon-based composite negative electrode material, preparation method thereof and lithium ion battery negative electrode | |
| CN107689452A (en) | A kind of graphene composite conductive slurry, its preparation method and application | |
| CN109103399B (en) | Functional diaphragm for lithium-sulfur battery, preparation method of functional diaphragm and application of functional diaphragm in lithium-sulfur battery | |
| CN103219491B (en) | Copper sulfide anode and preparation method thereof | |
| CN102623676B (en) | Composite material for positive pole of lithium-sulfur battery, and positive pole and battery both made of same | |
| CN103515614B (en) | A kind of additives for battery, positive electrode containing this additive and preparation method thereof | |
| CN106207092A (en) | A kind of combined anode slice of lithium ion battery of conductive agent and preparation method thereof | |
| CN103346302A (en) | Lithium battery silicon-carbon nanotube composite cathode material as well as preparation method and application thereof | |
| Li et al. | Recent progress in the carbon-based frameworks for high specific capacity anodes/cathode in lithium/sodium ion batteries | |
| CN103682307B (en) | Nickel ion doped/lithium titanate battery and preparation method thereof | |
| CN104638252A (en) | Silicon composited negative electrode material, preparation method of silicon composited negative electrode material and lithium ion battery | |
| CN105576203A (en) | Graphene/silicone/carbon nano tube composite material and preparation method and application thereof | |
| CN109873162A (en) | A kind of compound 3D collector and its preparation and application | |
| CN105355849A (en) | Lithium battery cathode additive, lithium ion battery, preparation method and uses thereof | |
| CN105047863A (en) | Cathode material for lithium battery and preparation method thereof | |
| CN106058173A (en) | Graphene-like carbon material/sulphur composite cathode material for lithium-sulphur battery, and preparation method and application thereof | |
| CN105914394A (en) | Composite cathode material of low-temperature lithium ion battery, cathode plate of low-temperature lithium ion battery, preparation method thereof, and lithium ion battery | |
| Li et al. | Architecture and performance of Si/C microspheres assembled by nano-Si via electro-spray technology as stability-enhanced anodes for lithium-ion batteries |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |