CN110165289A - Lithium ion battery and preparation method - Google Patents
Lithium ion battery and preparation method Download PDFInfo
- Publication number
- CN110165289A CN110165289A CN201910544905.8A CN201910544905A CN110165289A CN 110165289 A CN110165289 A CN 110165289A CN 201910544905 A CN201910544905 A CN 201910544905A CN 110165289 A CN110165289 A CN 110165289A
- Authority
- CN
- China
- Prior art keywords
- pole piece
- lithium ion
- ion battery
- carbon
- lithium
- 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
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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/80—Porous plates, e.g. sintered carriers
- H01M4/808—Foamed, spongy materials
-
- 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 present invention provides a kind of lithium ion battery, including shell, several anode pole pieces and the cathode pole piece being set in the shell, the tab being connect respectively with the anode pole piece with cathode pole piece, the diaphragm being set between the anode pole piece and cathode pole piece and the electrolyte being set in the shell, the anode pole piece includes positive electrode and covers carbon three-dimensional foam aluminium collector, the positive electrode covers in the structural void of carbon three-dimensional foam aluminium collector embedded in described, the cathode pole piece includes negative electrode material and negative current collector, the negative electrode material is adhered to the negative current collector surface.Positive electrode is filled in its three-dimensional grid-gap using carbon three-dimensional foam aluminium collector is covered, reduces the contact resistance of positive electrode and collector, improve the energy density and power density of battery significantly by lithium ion battery provided by the invention.The present invention also provides the preparation methods of the lithium ion battery.
Description
Technical field
The present invention relates to battery technology field more particularly to a kind of lithium ion battery and preparation methods.
Background technique
Lithium ion battery has the advantages that storage energy density is big, in Vehicular dynamic battery and mobile electron class consumer goods side
Face is widely applied, and is the important component of new energy.Lithium ion battery passes through years development, forms the mature lithiumation that contains and closes
The positive electrode of object, and the negative electrode material of the charcoal with various types of graphite state.And the processing method for foring comparative maturity, i.e.,
Positive electrode and conductive agent, the blending such as bonding agent form slurry, and coating, roll-in, after solidification, are closely sticked to aluminium foil together
On.Negative electrode material and bonding agent are mixed to form slurry, coating, roll-in, after solidification, are closely sticked on copper foil together.It welds again
Upper tab, and be separated by with diaphragm, electrolyte is injected, finished battery is formed.
But the contact resistance between aluminium foil and active material layer is excessive, and lithium ion can occur embedding lithium with aluminium foil and react, by
It inlays in the lithium that side of the positive electrode occurs and is reacted with abjection, destroy aluminium foil, lead to stability test and service life reduction.Therefore, side of the positive electrode
The often limiting element that lithium battery power-performance, charging time, fever aging and performance decline.Have been reported that propose will just
Pole material nano can partially solve lithium ion in the body phase migration rate of positive electrode, but can reduce the vibration of material simultaneously
Real density causes pole piece performance to decline.
Summary of the invention
In view of this, can be improved the energy density and function of battery it is necessary to provide a kind of improved lithium ion battery
Rate density.
The present invention provides a kind of lithium ion battery, including shell, several anode pole pieces being set in the shell and bears
Pole pole piece, is set between the anode pole piece and cathode pole piece the tab connecting respectively with the anode pole piece and cathode pole piece
Diaphragm and the electrolyte that is set in the shell, the anode pole piece include positive electrode and cover carbon three-dimensional foam aluminium afflux
Body, the positive electrode cover in the structural void of carbon three-dimensional foam aluminium collector embedded in described, and the cathode pole piece includes cathode
Material and negative current collector, the negative electrode material are adhered to the negative current collector surface.
Further, the porosity for covering carbon three-dimensional foam aluminium collector is 80-99%.
Further, the positive electrode includes LiMn2O4, nickle cobalt lithium manganate, nickel cobalt lithium aluminate, rich lithium manganese base solid solution
Material, polyanionic material one of cover carbon lithium ferric manganese phosphate and carbon-covering lithium iron phosphate or a variety of.
Further, the negative electrode material include class graphitic carbon, carbonaceous mesophase spherules, silicon carbon material, silicon oxygen carbon material or
One of lithium titanate material is a variety of.
Further, the positive electrode and the partial size of negative electrode material are 0.005-20 μm.
Further, the lithium ion battery includes energy-type cells and power type battery.
Further, the lithium ion battery be energy-type cells when, the single anode pole piece with a thickness of 200-700
μm, surface density 50-100mg/cm2。
Further, the lithium ion battery be power type battery when, the single anode pole piece with a thickness of 40-400 μ
M, surface density 6-40mg/cm2。
Further, the negative current collector is copper foil.
A kind of preparation method of lithium ion battery as mentioned, comprising the following steps:
Step 1, slurry is made in positive electrode to be filled in the gap for covering carbon three-dimensional foam aluminium collector, forms positive pole
Negative electrode slurry is made in negative electrode material and glue by piece, is coated to the surface of negative current collector, and pass through roll-in and heating, shape
At cathode pole piece；
Step 2, anode pole piece being obtained with diaphragm and cathode pole piece separating, and tab is respectively welded, then multi-disc assembles；
Step 3, aluminum plastic film or metal-back punch forming are formed into shell, assembled pole piece is packaged in shell, passed through
Dehydration, degassing and aging are crossed, electrolyte post package is then injected into, forms lithium ion battery.
Positive electrode is filled in its sky using carbon three-dimensional foam aluminium collector is covered by lithium ion battery provided by the invention
In gap, the contact resistance of positive electrode and collector is reduced, improves the energy density and power density of battery significantly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the lithium ion battery in an embodiment of the present invention.
Fig. 2 is the flow diagram of the preparation method of lithium ion battery in an embodiment of the present invention.
Main element symbol description
The present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It should be noted that it can be directly on another component when component is referred to as " being installed in " another component
Or there may also be components placed in the middle.When a component is considered as " being set to " another component, it, which can be, is directly set
Set on another component or may be simultaneously present component placed in the middle.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " it include one or more phases
Any and all combinations of the listed item of pass.
Referring to Fig. 1, Fig. 1 be an embodiment of the present invention in lithium ion battery 100 structural schematic diagram, the lithium from
Sub- battery 100 include shell 10, several anode pole pieces 20 for being set in the shell 10 with cathode pole piece 30, respectively with it is described
Tab 40 that anode pole piece 20 and cathode pole piece 30 connect, the diaphragm 50 being set between the anode pole piece 20 and cathode pole piece 30
And it is set to the electrolyte 60 in the shell.
The shell 10 is by aluminum plastic film or metal-back punch forming, for accommodating the anode pole piece 20 and cathode pole piece
30, diaphragm 50 and electrolyte 60.
The anode pole piece 20 includes positive electrode 21 and covers carbon three-dimensional foam aluminium collector 22, and the positive electrode 21 is embedding
It is covered in carbon three-dimensional foam aluminium collector 22 described in entering, make the positive electrode 21 by mechanical presses and covers carbon three-dimensional foam aluminium collection
Fluid 22 is in close contact.In one embodiment, binder can also be added, be that the two contact is closer.The positive electrode 21
Including LiMn2O4, nickle cobalt lithium manganate, nickel cobalt lithium aluminate, rich lithium manganese base solid solution material, polyanionic material, cover carbon phosphoric acid ferrimanganic
One of lithium and carbon-covering lithium iron phosphate are a variety of and cover carbon compound, and the carbon compound that covers is graphene, carbon nanotube
And one of conductive black or combination, the polyanionic material include orthosilicate type lithium ion, titanium phosphate lithium type,
Li2MnSiO4And Li2FeSiO4Partial size Deng, the positive electrode is 0.005-20 μm.It is described to cover carbon three-dimensional foam aluminium collector
22 be using foamed aluminium as kernel, and core-shell structure of the carbon-coating as shell, the foamed aluminium is by aluminium wire skeleton and three-dimensional communication hole
It is formed, the porosity for covering carbon three-dimensional foam aluminium collector 22 is 80-99%.
The cathode pole piece 30 includes negative electrode material 31 and negative current collector 32, and the negative electrode material 31 is adhered to described negative
32 surface of pole collector.In one embodiment, the negative electrode material 31 includes class graphitic carbon, carbonaceous mesophase spherules, silicon-carbon material
One of material, silicon oxygen carbon material or lithium titanate material are a variety of, and the partial size of the negative electrode material 31 is 0.005-20 μm.One
In embodiment, the negative current collector 32 is copper foil, and in embodiments, the negative current collector can also be nickel material system
At.
In one embodiment, the tab 40 includes aluminium pole ears and copper polar ear, the aluminium pole ears and the anode pole piece
20 welding, the copper polar ear and the cathode pole piece 30 weld.
The diaphragm 50 is set between the anode pole piece 20 and cathode pole piece 30, for avoiding the two from contacting, is caused
Short circuit.In one embodiment, the electrolyte 60 is lithium hexafluoro phosphate type electrolyte.
The lithium ion battery 100 includes energy-type cells and power type battery.The lithium ion battery 100 is energy type
When battery, the single anode pole piece 20 with a thickness of 200-700 μm, surface density 50-100mg/cm2；The lithium-ion electric
When pond 100 is power type battery, single anode pole piece 20 with a thickness of 40-400 μm, surface density 6-40mg/cm2.It can manage
Solution, the lithium ion battery 100 further includes the battery for taking into account energy and density.
Referring to Fig. 2, specifically including following step the present invention also provides a kind of preparation method of lithium ion battery 100
It is rapid:
Positive electrode is made slurry and is filled in the gap for covering carbon three-dimensional foam aluminium collector by step S21, forms anode
Negative electrode slurry is made in negative electrode material and glue by pole piece, is coated to the surface of negative current collector, and by roll-in and heat,
Form cathode pole piece；
Step S22 will obtain anode pole piece with diaphragm and cathode pole piece separates, and tab is respectively welded, then multi-disc group
Dress；
Aluminum plastic film or metal-back punch forming are formed shell, assembled pole piece are packaged in shell by step S23,
By dehydration, degassing and aging, it is then injected into electrolyte post package, forms lithium ion battery.
Make the positive electrode by mechanical presses in the step 21 and cover carbon three-dimensional foam aluminium to be in close contact, such as roller
Pressure, in one embodiment, can also be added binder, be that the two contact is closer.
It below will the present invention is further illustrated by specific embodiment.
Embodiment 1
Anode sizing agent is conventionally made in the positive-material lithium manganate that partial size is 2 μm, and its squeeze pack is arrived
In the gap for covering carbon three-dimensional foam aluminium collector that porosity is 99%, by roll-in, it is in close contact the two, forms anode
Pole piece, anode pole piece is with a thickness of 40 μm, surface density 40mg/cm2, the graphite that partial size is 10 μm is conventionally made negative
Pole slurry is coated to the surface of copper foil current collector by way of roll-in and bonding, cathode pole piece is formed, by what is obtained
Aluminium pole ears and copper polar ear are respectively welded in anode pole piece and cathode pole piece, are separated positive/negative plate with diaphragm, multi-disc assembling；It will assembling
Good pole piece is packaged in shell, by dehydration, degassing and Aging Step, and after injecting lithium hexafluoro phosphate type electrolyte, encapsulation, shape
At lithium ion battery product.
Obtained lithium ion battery product with use aluminum foil current collector compared with weight battery, energy density improve
20%, power density improves 3 times, and device lifetime improves 70%.
Embodiment 2
Positive slurry is conventionally made in the carbon nanotube of the LiFePO4 for covering carbon of quality accounting 95% and 5%
Material, wherein LiFePO4 and the partial size of carbon nanotube are 0.005-0.03 μm, by anode sizing agent squeeze pack obtained to hole
In the gap for covering carbon three-dimensional foam aluminium collector that rate is 80%, by roll-in, it is in close contact the two, forms positive pole
Piece, anode pole piece is with a thickness of 400 μm, surface density 6mg/cm2, by partial size be 10 μm carbonaceous mesophase spherules conventionally
Negative electrode slurry is made, by way of roll-in and adding glue, is coated to the surface of copper foil current collector, forms cathode pole piece, it will
Aluminium pole ears and copper polar ear are respectively welded in obtained anode pole piece and cathode pole piece, are separated positive/negative plate with diaphragm, multi-disc assembling；
Assembled pole piece is packaged in shell, by dehydration, degassing and Aging Step, after injecting lithium hexafluoro phosphate type electrolyte,
Encapsulation forms lithium ion battery product.
Obtained lithium ion battery product with use aluminum foil current collector compared with weight battery, energy density improve
20%, power density improves 2 times, and device lifetime improves 55%.
Embodiment 3
Anode sizing agent is conventionally made in graphene, conductive black and nickle cobalt lithium manganate that partial size is 8 μm, wherein
Anode sizing agent squeeze pack obtained is by graphene quality accounting 0.1%, conductive black quality accounting 3% to porosity
In 92% gap for covering carbon three-dimensional foam aluminium collector, by roll-in, it is in close contact the two, forms anode pole piece, just
Pole pole piece is with a thickness of 500 μm, surface density 50mg/cm2, cathode slurry is conventionally made in the silicon oxygen carbon that partial size is 1 μm
Material is coated to the surface of copper foil current collector by way of roll-in and adding glue, forms cathode pole piece, the anode that will be obtained
Aluminium pole ears and copper polar ear are respectively welded in pole piece and cathode pole piece, are separated positive/negative plate with diaphragm, multi-disc assembling；It will be assembled
Pole piece is packaged in shell, and by dehydration, degassing and Aging Step, after injecting lithium hexafluoro phosphate type electrolyte, encapsulation forms lithium
Ion battery products.
Obtained lithium ion battery product with use aluminum foil current collector compared with weight battery, energy density improve
30%, power density improves 50%, and device lifetime improves 55%.
Embodiment 4
Anode sizing agent is conventionally made in graphene, carbon nanotube and nickel cobalt lithium aluminate that partial size is 0.5 μm,
Middle graphene quality accounting 0.1%, carbon nanotube mass accounting 0.3%, by anode sizing agent squeeze pack obtained to porosity
By roll-in, to be in close contact the two in 80% gap for covering carbon three-dimensional foam aluminium collector, formation anode pole piece,
Anode pole piece is with a thickness of 260 μm, surface density 90mg/cm2, cathode slurry is conventionally made in the silicon-carbon that partial size is 2 μm
Material is coated to the surface of copper foil current collector by way of roll-in and adding glue, forms cathode pole piece, the anode that will be obtained
Aluminium pole ears and copper polar ear are respectively welded in pole piece and cathode pole piece, are separated positive/negative plate with diaphragm, multi-disc assembling；It will be assembled
Pole piece is packaged in shell, and by dehydration, degassing and Aging Step, after injecting lithium hexafluoro phosphate type electrolyte, encapsulation forms lithium
Ion battery products.
Obtained lithium ion battery product with use aluminum foil current collector compared with weight battery, energy density improve
30%, power density improves 30%, and device lifetime improves 25%.
Embodiment 5
By the rich lithium manganese base solid solution of quality accounting 96%, 1% graphene and 3% carbon nanotube conventionally
Anode sizing agent is made, wherein the partial size of three kinds of materials is 0.005-5 μm, is to porosity by anode sizing agent squeeze pack obtained
In 90% gap for covering carbon three-dimensional foam aluminium collector, by roll-in, it is in close contact the two, forms anode pole piece, just
Pole pole piece is with a thickness of 400 μm, surface density 80mg/cm2, cathode slurry is conventionally made in the silicon-carbon that partial size is 10 μm
Material is coated to the surface of copper foil current collector by way of roll-in and adding glue, forms cathode pole piece, the anode that will be obtained
Aluminium pole ears and copper polar ear are respectively welded in pole piece and cathode pole piece, are separated positive/negative plate with diaphragm, multi-disc assembling；It will be assembled
Pole piece is packaged in shell, and by dehydration, degassing and Aging Step, after injecting lithium hexafluoro phosphate type electrolyte, encapsulation forms lithium
Ion battery products.
Obtained lithium ion battery product with use aluminum foil current collector compared with weight battery, energy density improve
20%, power density improves 50%, and device lifetime improves 100%.
Embodiment 6
Anode sizing agent is conventionally made in the titanium phosphate lithium type polyanionic material that partial size is 20 μm, and is squeezed
Pressure is filled in the gap for covering carbon three-dimensional foam aluminium collector that porosity is 93.5%, by roll-in, connects the two closely
Touching forms anode pole piece, and anode pole piece is with a thickness of 300 μm, surface density 30mg/cm2, the lithium titanate material for being 10 μm by partial size
Negative electrode slurry is conventionally made, by way of roll-in and bonding, is coated to the surface of copper foil current collector, is formed
Aluminium pole ears and copper polar ear are respectively welded in obtained anode pole piece and cathode pole piece by cathode pole piece, are divided positive/negative plate with diaphragm
Every multi-disc assembling；Assembled pole piece is packaged in shell, by dehydration, degassing and Aging Step inject lithium hexafluoro phosphate
After type electrolyte, encapsulation forms lithium ion battery product.
Obtained lithium ion battery product with use aluminum foil current collector compared with weight battery, energy density improve
15%, power density improves 2 times, and device lifetime improves 100%.
Embodiment 7
By partial size it is that 5 μm of nickel ion doped material is conventionally made anode sizing agent, and by its squeeze pack to hole
In the gap for covering carbon three-dimensional foam aluminium collector that gap rate is 92%, by roll-in, it is in close contact the two, forms positive pole
Piece, anode pole piece is with a thickness of 200 μm, surface density 100mg/cm2, it is 5-10 μm of carbonaceous mesophase spherules according to routine by partial size
Negative electrode slurry is made in method, by way of roll-in and bonding, is coated to the surface of copper foil current collector, forms cathode pole
Piece, is respectively welded aluminium pole ears and copper polar ear for obtained anode pole piece and cathode pole piece, is separated positive/negative plate with diaphragm, multi-disc
Assembling；Assembled pole piece is packaged in shell, by dehydration, degassing and Aging Step, injection lithium hexafluoro phosphate type electrolysis
After liquid, encapsulation forms lithium ion battery product.
Obtained lithium ion battery product with use aluminum foil current collector compared with weight battery, energy density improve
10%, power density improves 30%, and device lifetime improves 90%.
Embodiment 8
Anode is conventionally made in the carbon nanotube of the lithium ferric manganese phosphate for covering carbon of quality accounting 90% and 10%
Slurry, wherein LiFePO4 and the partial size of carbon nanotube are 0.5-3 μm, are to porosity by anode sizing agent squeeze pack obtained
In 95% gap for covering carbon three-dimensional foam aluminium collector, by roll-in, it is in close contact the two, forms anode pole piece, just
Pole pole piece is with a thickness of 700 μm, surface density 50mg/cm2, cathode slurry is conventionally made in the graphite that partial size is 8-10 μm
Material is coated to the surface of copper foil current collector by way of roll-in and adding glue, forms cathode pole piece, the anode that will be obtained
Aluminium pole ears and copper polar ear are respectively welded in pole piece and cathode pole piece, are separated positive/negative plate with diaphragm, multi-disc assembling；It will be assembled
Pole piece is packaged in shell, and by dehydration, degassing and Aging Step, after injecting lithium hexafluoro phosphate type electrolyte, encapsulation forms lithium
Ion battery products.
Obtained lithium ion battery product with use aluminum foil current collector compared with weight battery, energy density improve
25%, power density improves 1 times, and device lifetime improves 50%.
Embodiment 9
The polyanionic material Li for being 0.1-6 μm by partial size2MnSiO4Positive slurry is conventionally made with carbon nanotube
Material, and by its squeeze pack to porosity be 98% the gap for covering carbon three-dimensional foam aluminium collector in, by roll-in, make secondly
Person is in close contact, and forms anode pole piece, and anode pole piece is with a thickness of 100 μm, surface density 30mg/cm2, it is 1-5 μm by partial size
Negative electrode slurry is conventionally made in silicon oxygen carbon material, by way of roll-in and bonding, is coated to copper foil current collector
Surface, formed cathode pole piece, aluminium pole ears and copper polar ear are respectively welded in obtained anode pole piece and cathode pole piece, with diaphragm will
Positive/negative plate separates, multi-disc assembling；Assembled pole piece is packaged in shell, by dehydration, degassing and Aging Step, injection
After lithium hexafluoro phosphate type electrolyte, encapsulation forms lithium ion battery product.
Obtained lithium ion battery product with use aluminum foil current collector compared with weight battery, energy density improve
25%, power density improves 3 times, and device lifetime improves 100%.
Embodiment 10
The polyanionic material Li for being 7 μm by partial size2FeSiO4Anode sizing agent is conventionally made, and is squeezed
It is filled in the gap for covering carbon three-dimensional foam aluminium collector that porosity is 95%, by roll-in, is in close contact the two, shape
At anode pole piece, anode pole piece is with a thickness of 350 μm, surface density 50mg/cm2, by partial size be 10 μm lithium titanate material according to
Negative electrode slurry is made in conventional method, by way of roll-in and bonding, is coated to the surface of copper foil current collector, forms cathode
Pole piece, is respectively welded aluminium pole ears and copper polar ear for obtained anode pole piece and cathode pole piece, is separated positive/negative plate with diaphragm, more
Piece assembling；Assembled pole piece is packaged in shell, by dehydration, degassing and Aging Step, injection lithium hexafluoro phosphate type electricity
After solving liquid, encapsulation forms lithium ion battery product.
Obtained lithium ion battery product with use aluminum foil current collector compared with weight battery, energy density improve
15%, power density improves 2 times, and device lifetime improves 100%.
Positive electrode is filled in its gap by the present invention using carbon three-dimensional foam aluminium collector is covered, and by roll-in, is reduced
The filling compaction rate of the contact resistance of positive electrode and collector, electrode material is high, using different-grain diameter positive electrode with
When carbon material, the gap for covering carbon three-dimensional foam aluminium can be effectively enriched, the energy density and power density of battery is improved significantly, covers
Carbon three-dimensional foam aluminium collector provides three-dimensional conductive and heat-conducting mode, in fast charging and discharging, so that internal temperature of battery is more
Add uniformly, avoid the decomposition of electrolyte, generates Li dendrite with negative side, improve the service life of battery.
Those skilled in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as in spirit of the invention, to made by embodiment of above
Appropriate change and variation are all intended to fall within the scope of the claimed invention.
Claims (10)
1. a kind of lithium ion battery, including shell, several anode pole pieces being set in the shell and cathode pole piece, respectively with
It the anode pole piece and the tab of cathode pole piece connection, the diaphragm that is set between the anode pole piece and cathode pole piece and is set to
Electrolyte in the shell, it is characterised in that: the anode pole piece includes positive electrode and covers carbon three-dimensional foam aluminium collector,
The positive electrode covers in the structural void of carbon three-dimensional foam aluminium collector embedded in described, and the cathode pole piece includes negative electrode material
With negative current collector, the negative electrode material is adhered to the negative current collector surface.
2. lithium ion battery as described in claim 1, it is characterised in that: the porosity for covering carbon three-dimensional foam aluminium collector
For 80-99%.
3. lithium ion battery as described in claim 1, it is characterised in that: the positive electrode includes LiMn2O4, nickel cobalt mangaic acid
Lithium, rich lithium manganese base solid solution material, polyanionic material, covers in carbon lithium ferric manganese phosphate and carbon-covering lithium iron phosphate nickel cobalt lithium aluminate
It is one or more.
4. lithium ion battery as described in claim 1, it is characterised in that: the negative electrode material includes class graphitic carbon, interphase
One of carbosphere, silicon carbon material, silicon oxygen carbon material or lithium titanate material are a variety of.
5. lithium ion battery as described in claim 1, it is characterised in that: the positive electrode and the partial size of negative electrode material are
0.005-20μm。
6. lithium ion battery as described in claim 1, it is characterised in that: the lithium ion battery includes energy-type cells and function
Rate type battery.
7. lithium ion battery as claimed in claim 6, it is characterised in that: single when the lithium ion battery is energy-type cells
One anode pole piece with a thickness of 200-700 μm, surface density 50-100mg/cm2。
8. lithium ion battery as claimed in claim 6, it is characterised in that: single when the lithium ion battery is power type battery
One anode pole piece with a thickness of 40-400 μm, surface density 6-40mg/cm2。
9. lithium ion battery as described in claim 1, it is characterised in that: the negative current collector is copper foil.
10. a kind of preparation method of lithium ion battery as described in any one of claims 1-9, which is characterized in that including
Following steps:
Step 1, slurry is made in positive electrode to be filled in the gap for covering carbon three-dimensional foam aluminium collector, forms anode pole piece,
Negative electrode slurry is made in negative electrode material and glue, is coated to the surface of negative current collector, and by roll-in and heating, is formed negative
Pole pole piece；
Step 2, anode pole piece being obtained with diaphragm and cathode pole piece separating, and tab is respectively welded, then multi-disc assembles；
Step 3, aluminum plastic film or metal-back punch forming are formed into shell, assembled pole piece is packaged in shell, by de-
Water, degassing and aging are then injected into electrolyte post package, form lithium ion battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910544905.8A CN110165289A (en) | 2019-06-21 | 2019-06-21 | Lithium ion battery and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910544905.8A CN110165289A (en) | 2019-06-21 | 2019-06-21 | Lithium ion battery and preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110165289A true CN110165289A (en) | 2019-08-23 |
Family
ID=67626769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910544905.8A Pending CN110165289A (en) | 2019-06-21 | 2019-06-21 | Lithium ion battery and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110165289A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112510215A (en) * | 2020-10-28 | 2021-03-16 | 中天超容科技有限公司 | Electrode pole piece, manufacturing method of electrode pole piece and electrochemical energy storage device |
| EP3809491A1 (en) * | 2019-10-15 | 2021-04-21 | Honda Motor Co., Ltd. | Electrode for lithium ion secondary batteries and lithium ion secondary battery |
| CN112886050A (en) * | 2019-11-29 | 2021-06-01 | 宁德时代新能源科技股份有限公司 | Secondary battery and device containing the same |
| EP3879598A1 (en) * | 2020-03-13 | 2021-09-15 | Honda Motor Co., Ltd. | Electrode for lithium ion secondary battery, and lithium ion secondary battery |
| CN114678535A (en) * | 2020-12-24 | 2022-06-28 | 比亚迪股份有限公司 | Lithium battery structure and battery pack |
| CN114883575A (en) * | 2022-05-09 | 2022-08-09 | 清华大学 | Lithium ion battery and preparation method thereof |
| CN114999833A (en) * | 2022-06-07 | 2022-09-02 | 清华大学 | Carbon nano tube reinforced battery type capacitor and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09213307A (en) * | 1995-11-30 | 1997-08-15 | Elna Co Ltd | Nonaqueous electrolyte system secondary cell |
| CN101098004A (en) * | 2006-06-27 | 2008-01-02 | 中国电子科技集团公司第十八研究所 | Application of foamed aluminium in the preparation of chemical power supply |
| CN102610831A (en) * | 2012-03-26 | 2012-07-25 | 龙能科技（苏州）有限公司 | Electrode of lithium ion battery and preparation method thereof |
| US20120328957A1 (en) * | 2011-02-18 | 2012-12-27 | Sumitomo Electric Toyama Co., Ltd. | Three-dimensional network aluminum porous body, electrode using the aluminum porous body, and nonaqueous electrolyte battery, capacitor and lithium-ion capacitor with nonaqueous electrolytic solution, each using the electrode |
| CN103380518A (en) * | 2011-02-18 | 2013-10-30 | 住友电气工业株式会社 | Electrochemical element |
| CN104821403A (en) * | 2015-03-17 | 2015-08-05 | 江苏乐能电池股份有限公司 | Preparation method for lithium ion battery |
| CN105449223A (en) * | 2015-11-18 | 2016-03-30 | 青岛领军节能与新材料研究院 | Manufacturing method for high-safety and high-capacity lithium ion battery |
-
2019
- 2019-06-21 CN CN201910544905.8A patent/CN110165289A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09213307A (en) * | 1995-11-30 | 1997-08-15 | Elna Co Ltd | Nonaqueous electrolyte system secondary cell |
| CN101098004A (en) * | 2006-06-27 | 2008-01-02 | 中国电子科技集团公司第十八研究所 | Application of foamed aluminium in the preparation of chemical power supply |
| US20120328957A1 (en) * | 2011-02-18 | 2012-12-27 | Sumitomo Electric Toyama Co., Ltd. | Three-dimensional network aluminum porous body, electrode using the aluminum porous body, and nonaqueous electrolyte battery, capacitor and lithium-ion capacitor with nonaqueous electrolytic solution, each using the electrode |
| CN103380518A (en) * | 2011-02-18 | 2013-10-30 | 住友电气工业株式会社 | Electrochemical element |
| CN102610831A (en) * | 2012-03-26 | 2012-07-25 | 龙能科技（苏州）有限公司 | Electrode of lithium ion battery and preparation method thereof |
| CN104821403A (en) * | 2015-03-17 | 2015-08-05 | 江苏乐能电池股份有限公司 | Preparation method for lithium ion battery |
| CN105449223A (en) * | 2015-11-18 | 2016-03-30 | 青岛领军节能与新材料研究院 | Manufacturing method for high-safety and high-capacity lithium ion battery |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3809491A1 (en) * | 2019-10-15 | 2021-04-21 | Honda Motor Co., Ltd. | Electrode for lithium ion secondary batteries and lithium ion secondary battery |
| CN112886050B (en) * | 2019-11-29 | 2022-07-05 | 宁德时代新能源科技股份有限公司 | Secondary battery and device containing the same |
| CN112886050A (en) * | 2019-11-29 | 2021-06-01 | 宁德时代新能源科技股份有限公司 | Secondary battery and device containing the same |
| US11626589B2 (en) | 2019-11-29 | 2023-04-11 | Contemporary Amperex Technology Co., Limited | Secondary battery and device containing same |
| JP7008737B2 (en) | 2020-03-13 | 2022-01-25 | 本田技研工業株式会社 | Electrodes for lithium-ion secondary batteries and lithium-ion secondary batteries |
| JP2021144895A (en) * | 2020-03-13 | 2021-09-24 | 本田技研工業株式会社 | Electrode for lithium ion secondary battery and lithium ion secondary battery |
| EP3879598A1 (en) * | 2020-03-13 | 2021-09-15 | Honda Motor Co., Ltd. | Electrode for lithium ion secondary battery, and lithium ion secondary battery |
| CN112510215B (en) * | 2020-10-28 | 2021-10-12 | 中天超容科技有限公司 | Electrode pole piece, manufacturing method of electrode pole piece and electrochemical energy storage device |
| CN112510215A (en) * | 2020-10-28 | 2021-03-16 | 中天超容科技有限公司 | Electrode pole piece, manufacturing method of electrode pole piece and electrochemical energy storage device |
| CN114678535A (en) * | 2020-12-24 | 2022-06-28 | 比亚迪股份有限公司 | Lithium battery structure and battery pack |
| CN114883575A (en) * | 2022-05-09 | 2022-08-09 | 清华大学 | Lithium ion battery and preparation method thereof |
| CN114999833A (en) * | 2022-06-07 | 2022-09-02 | 清华大学 | Carbon nano tube reinforced battery type capacitor and preparation method thereof |
| CN114999833B (en) * | 2022-06-07 | 2023-04-07 | 清华大学 | Carbon nano tube reinforced battery type capacitor and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110165289A (en) | Lithium ion battery and preparation method | |
| CN107681115A (en) | A kind of negative plate of lithium slurry battery | |
| CN109687014A (en) | A kind of high-energy density fast charging type lithium-ion-power cell | |
| CN103208645B (en) | Nano-power battery composed of lithium manganate and graphene and preparation method thereof | |
| CN112825354B (en) | Lithium negative electrode, preparation method thereof and lithium secondary battery | |
| CN104103848A (en) | Lithium manganate and nickel cobalt lithium manganate power battery and manufacturing method thereof | |
| CN105914378B (en) | A kind of lithium ion battery negative electrode and preparation method thereof, lithium ion battery | |
| CN103208646A (en) | Lithium manganate and nickel cobalt lithium manganate nanometer battery and manufacturing method thereof | |
| CN109037592A (en) | Lithium ion battery positive plate, preparation method thereof and lithium ion battery | |
| CN109768337A (en) | The chargeable button-shaped soft bag lithium ionic cell of one kind and processing method | |
| CN104103849A (en) | Lithium iron phosphate power battery and manufacturing method thereof | |
| CN106299331A (en) | Based lithium-ion battery positive plate comprising lithium titanate coating and preparation method thereof and lithium ion battery | |
| CN115084532A (en) | Negative electrode material, preparation method thereof, negative plate and lithium ion battery | |
| CN203351704U (en) | Ultra-high-multiplying-power cylindrical lithium iron phosphate battery containing graphene coating | |
| CN108736014A (en) | Composite negative pole and preparation method thereof includes the alkali metal battery of composite negative pole | |
| CN109065892A (en) | Silicon-carbon cathode and lithium ion battery and preparation method thereof and electrical equipment | |
| CN106374083B (en) | Silicon substrate negative electrode and preparation method thereof and lithium ion battery | |
| CN105591070B (en) | A kind of preparation method of high-energy-density cathode pole piece and its lithium ion battery | |
| CN102916219B (en) | A kind of lithium ion battery cell and preparation method thereof | |
| CN109346665B (en) | Preparation method of lithium ion battery based on negative electrode lithium pre-supplement | |
| JP2011060521A (en) | Manufacturing method of electrode for secondary battery | |
| CN218039279U (en) | Positive plate and battery | |
| CN108735970B (en) | Sandwich structure metal composite negative plate for secondary battery | |
| CN109411701A (en) | Battery anode slice and its manufacturing method and lithium ion battery and its manufacturing method | |
| CN104103824A (en) | High energy power battery and manufacturing method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190823 |
|
| RJ01 | Rejection of invention patent application after publication |