CN108281660A - Anode material for lithium-ion batteries, based lithium-ion battery positive plate and preparation method thereof and lithium ion battery - Google Patents
Anode material for lithium-ion batteries, based lithium-ion battery positive plate and preparation method thereof and lithium ion battery Download PDFInfo
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- CN108281660A CN108281660A CN201810069916.0A CN201810069916A CN108281660A CN 108281660 A CN108281660 A CN 108281660A CN 201810069916 A CN201810069916 A CN 201810069916A CN 108281660 A CN108281660 A CN 108281660A
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- 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
- H01M4/621—Binders
- H01M4/622—Binders being polymers
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- 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
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- 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
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- 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
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- 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
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention provides a kind of anode material for lithium-ion batteries, based lithium-ion battery positive plate and preparation method thereof and lithium ion batteries, it is related to electrode material preparation method technical field, the anode material for lithium-ion batteries includes positive active material, conductive agent and adhesive, and described adhesive includes polyethylene oxide；Traditional based lithium-ion battery positive plate is alleviated during slurrying, using N methyl pyrrolidones as solvent, not only surrounding enviroment is caused to pollute, the health of staff can also be damaged, and the technical issues of production cost can be increased, reach and Vingon is replaced using the adhesive including at least polyethylene oxide, so that can be using water as solvent in pulping process, reduce the environmental pollution in pulping process, eliminate health hidden danger, the energy has been saved, the technique effect of the processing cost of lithium ion battery is reduced.
Description
Technical field
The present invention relates to electrode material preparation method technical field, more particularly, to a kind of anode material for lithium-ion batteries,
Based lithium-ion battery positive plate and preparation method thereof and lithium ion battery.
Background technology
Lithium ion battery is since last century, the nineties were accomplished scale production, with its high volume energy ratio, high weight
The advantages that energy ratio, high voltage, low discharge rate, memory-less effect and long circulation life, is widely used in every field.
Traditional anode material for lithium-ion batteries uses Vingon as adhesive, in the process for preparing anode sizing agent
In, after first Vingon is dissolved in N-Methyl pyrrolidone, then it is equal with the material mixings such as positive active material, conductive agent
It is even, it is finally coated in aluminium foil surface.But due to using N-Methyl pyrrolidone as solvent, in pulping process easily
Volatilization, not only causes surrounding enviroment to pollute, can also damage the health of staff, simultaneously because N-Methyl pyrrolidone
Cost it is higher, can also increase the production cost of lithium ion battery.
In view of this, special propose the present invention.
Invention content
The purpose of the present invention is to provide a kind of anode material for lithium-ion batteries, to alleviate traditional lithium ion cell positive
Piece, using N-Methyl pyrrolidone as solvent, not only causes surrounding enviroment to pollute during slurrying, can also damage staff
Health, while the cost of N-Methyl pyrrolidone is higher, and the technology that can also increase the production cost of lithium ion battery is asked
Topic.
Anode material for lithium-ion batteries provided by the invention, including positive active material, conductive agent and adhesive, it is described viscous
Mixture includes polyethylene oxide.
Further, described adhesive may also include polyacrylic acid, polytetrafluoroethylene (PTFE), Vingon, soluble poly four
Vinyl fluoride, butadiene-styrene rubber, hydroxypropyl methyl cellulose, methylcellulose, carboxymethyl cellulose, polyvinyl alcohol, polyacrylamide,
At least one of acrylonitrile copolymer, sodium alginate, chitosan and chitosan derivatives.
Further, the number-average molecular weight of the ethylene oxide is 100-500 ten thousand.
Further, the positive active material be selected from cobalt acid lithium, LiMn2O4, lithium nickelate, LiFePO4, phosphoric acid vanadium lithium,
At least one of lithium manganese phosphate, nickel cobalt manganese oxidate for lithium and nickel cobalt aluminium oxidate for lithium.
Further, the conductive agent in graphite, carbon black, acetylene black, graphene, carbon fiber and carbon nanotube extremely
Few one kind.
Further, described adhesive accounts for the 0.6-25wt% of anode material for lithium-ion batteries, and the polyethylene oxide
Not less than described adhesive 1wt%；
Preferably, polyethylene oxide accounts for the 0.6-2.5wt% of anode material for lithium-ion batteries.
The second object of the present invention is to provide a kind of based lithium-ion battery positive plate, including above-mentioned lithium ion cell positive material
Material and collector, the anode material for lithium-ion batteries are coated on the collector.
Further, the collector is aluminium foil or alloy foil.
The third object of the present invention is to provide the preparation method of above-mentioned based lithium-ion battery positive plate, include the following steps：
(a) anode material for lithium-ion batteries is added to the water and is uniformly dispersed, lithium ion battery anode glue size is made；
(b) on a current collector by lithium ion battery anode glue size coating, it then is dried and roll-in, obtains lithium-ion electric
Pond positive plate.
The fourth object of the present invention is to provide a kind of lithium ion battery, including above-mentioned anode material for lithium-ion batteries or on
State based lithium-ion battery positive plate.
Anode material for lithium-ion batteries provided by the invention is replaced poly- inclined using the adhesive including at least polyethylene oxide
Vinyl chloride so that can reduce the environmental pollution in pulping process using water as solvent in pulping process, it is hidden to eliminate health
Suffer from, has saved the energy, reduced the processing cost of lithium ion battery.
Based lithium-ion battery positive plate provided by the invention is applied using the anode material for lithium-ion batteries including polyethylene oxide
It is overlying on collector and is prepared, reduce the environmental pollution in preparation process, eliminate health hidden danger, saved the energy,
Reduce the processing cost of lithium ion battery.
The preparation method of based lithium-ion battery positive plate provided by the invention replaces N- methyl pyrroles using cheap non-harmful water
Pyrrolidone reduces environmental pollution as solvent, eliminates health hidden danger, has saved the energy, reduced lithium ion battery
Processing cost.
Lithium ion battery provided by the invention prepares lithium-ion electric using anode material for lithium-ion batteries provided by the invention
Pond positive plate reduces the manufacturing cost of lithium ion battery, is suitable for large-scale promotion and application.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the charge-discharge performance test curve for the lithium ion battery that the embodiment of the present invention 1 provides；
Fig. 2 is the charge-discharge performance test curve for the lithium ion battery that comparative example 1 of the present invention provides.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
Traditional anode material for lithium-ion batteries uses Vingon as adhesive, in the process for preparing anode sizing agent
In, after first Vingon is dissolved in N-Methyl pyrrolidone, then it is equal with the material mixings such as positive active material, conductive agent
It is even, it is finally coated in aluminium foil surface.But due to using N-Methyl pyrrolidone as solvent, in pulping process easily
Volatilization, not only causes surrounding enviroment to pollute, can also damage the health of staff.Therefore, using cheap non-harmful water
Become technical concerns point as solvent instead of N-Methyl pyrrolidone, but since unsuitable adhesive leads to manufactured lithium
The electric property of ion battery positive electrode is poor, cannot be satisfied the requirement of lithium ion battery.
According to an aspect of the present invention, the present invention provides a kind of anode material for lithium-ion batteries, including positive-active
Substance, conductive agent and adhesive, described adhesive include polyethylene oxide.
Anode material for lithium-ion batteries provided by the invention is replaced poly- inclined using the adhesive including at least polyethylene oxide
Vinyl chloride so that can reduce the environmental pollution in pulping process using water as solvent in pulping process, it is hidden to eliminate health
Suffer from, has saved the energy, reduced the processing cost of lithium ion battery.
In one embodiment of the invention, adhesive may also include polyacrylic acid (PAA), polytetrafluoroethylene (PTFE)
(PTFE), Vingon (PVDF), soluble poly tetrafluoroethene (PFA), butadiene-styrene rubber (SBR), hydroxypropyl methyl cellulose
(HPMC), methylcellulose (MC), carboxymethyl cellulose (CMC), polyvinyl alcohol (PVA), polyacrylamide (polyethylene oxide),
At least one of acrylonitrile copolymer, sodium alginate, chitosan and chitosan derivatives.
Above-mentioned polytetrafluoroethylene (PTFE), Vingon, soluble poly tetrafluoroethene and butadiene-styrene rubber are water emulsion, with
Convenient in water can be evenly dispersed.
Acrylonitrile copolymer includes LA132, LA133 and LA135 etc..
When adhesive is the mixture of polyethylene oxide and above-mentioned other adhesives, prepared anode sizing agent and afflux
More preferably, positive plate flexibility is more preferably for the adhesiving effect of body.
In the preferred embodiment of the present invention, the number-average molecular weight of polyethylene oxide is 100-500 ten thousand.
In the present invention, as the typical but non-limiting number-average molecular weight of the polyethylene oxide of adhesive as being 100
Ten thousand, 1,200,000,1,500,000,1,800,000,2,000,000,2,200,000,2,500,000,2,800,000,3,000,000,3,200,000,3,500,000,3,800,000,4,000,000,
4200000,4,500,000,4,800,000 or 5,000,000.
Select adhesive of the polyethylene oxide as anode material for lithium-ion batteries so that based lithium-ion battery positive plate it is steady
It is qualitative more preferably, in the electrolytic solution without Swelling, improve the cryogenic property of lithium ion battery, extend following for lithium ion battery
The ring service life.
In present invention further optimization embodiment, polyethylene oxide is purchased in lucky hundred chemical companies of the U.S..
In the preferred embodiment of the present invention, positive active material is selected from cobalt acid lithium, LiMn2O4, lithium nickelate, phosphorus
At least one of sour iron lithium, phosphoric acid vanadium lithium, lithium manganese phosphate, nickel cobalt manganese oxidate for lithium, nickel cobalt aluminium oxidate for lithium.
The present invention typical but non-limiting embodiment in, positive active material can be cobalt acid lithium, LiMn2O4,
Lithium nickelate, LiFePO4, phosphoric acid vanadium lithium, lithium manganese phosphate, nickel cobalt manganese oxidate for lithium or nickel cobalt aluminium oxidate for lithium, or above-mentioned
Arbitrary two kinds of mixture in positive active material, such as the mixture of cobalt acid lithium and LiMn2O4, lithium nickelate and LiFePO4 it is mixed
Close object, phosphoric acid vanadium lithium and lithium manganese phosphate mixture etc., can also be above-mentioned positive active material in arbitrary three kinds and three kinds with
On mixture, such as be cobalt acid lithium, the mixture of LiMn2O4 and lithium nickelate, LiFePO4, phosphoric acid vanadium lithium, lithium manganese phosphate and nickel cobalt
The mixture etc. of manganese oxidate for lithium.
In the preferred embodiment of the present invention, conductive agent is selected from graphite, carbon black, acetylene black, graphene, carbon fiber
At least one of with carbon nanotube.
In a kind of typical but non-limiting embodiment of the present invention, conductive agent is graphite, carbon black, acetylene black, stone
At least one of black alkene, carbon fiber or carbon nanotube.
In the typical but non-limiting embodiment mode of the present invention, conductive agent can be graphite, carbon black, acetylene
Black, graphene, carbon fiber or carbon nanotube, or above-mentioned arbitrary two kinds of mixture, such as the mixture of graphite and carbon black,
Or the mixture of carbon black and acetylene black, the mixture etc. of carbon fiber and carbon nanotube, can also be above-mentioned arbitrary three kinds of mixing
Object also can also be above-mentioned such as the mixture or carbon black of graphite, carbon black and acetylene black, the mixture etc. of acetylene black and graphene
The mixture of any four and four kinds or more, such as graphite, carbon black, acetylene black and graphene mixture.
In the preferred embodiment of the present invention, adhesive accounts for the 0.6- in anode material for lithium-ion batteries
25wt%, and polyethylene oxide is not less than the 1wt% of adhesive.
In the typical but non-limiting embodiment of the present invention, the content of adhesive is 0.6wt%, 0.7%
Wt%, 0.8wt%, 0.9wt%, 1wt%, 1.5wt%, 2wt%, 2.5wt%, 3wt%, 3.5wt%, 4wt%,
4.5wt%, 5wt%, 5.5wt%, 6wt%, 6.5wt%, 7wt%, 7.5wt%, 8wt%, 8.5wt%, 9wt%,
10wt%, 10.5wt%, 11wt%, 11.5wt%, 12wt%, 12.5wt%, 13wt%, 13.5wt%, 14wt%,
14.5wt%, 15wt%, 15.5wt%, 16wt%, 16.5wt%, 17wt%, 17.5wt%, 18wt%, 19wt%,
19.5wt%, 20wt%, 20.5wt%, 21wt%, 21.5wt%, 22wt%, 22.5wt%, 23wt%, 23.5wt%,
24wt% or 24.5wt%.
In anode material for lithium-ion batteries, when adhesive accounts for the 0.6-25wt% of anode material for lithium-ion batteries, and it is poly-
When ethylene oxide is not less than the 1wt% of adhesive, lithium ion battery anode glue size made of anode material for lithium-ion batteries and collection
The adhesion property of fluid is more preferable.
In present invention further optimization embodiment, polyethylene oxide accounts for the 0.6- of anode material for lithium-ion batteries
2.5wt%.
In the typical but non-limiting embodiment of the present invention, polyethylene oxide accounts for anode material for lithium-ion batteries
0.6wt%, 0.7wt%, 0.8wt%, 0.9wt%, 1wt%, 1.1wt%, 1.2wt%, 1.3wt%, 1.4wt%,
1.5wt%, 1.6wt%, 1.7wt%, 1.8wt%, 1.9wt%, 2wt%, 2.1wt%, 2.2wt%, 2.3wt%,
2.4wt% or 2.5wt%.
When it is 0.6-2.5wt% that polyethylene oxide, which accounts for anode material for lithium-ion batteries, anode material for lithium-ion batteries
The adhesion property of manufactured lithium ion battery anode glue size and collector is more preferable.
According to the second aspect of the invention, the present invention provides a kind of based lithium-ion battery positive plates, including the present invention to carry
The anode material for lithium-ion batteries and collector of confession, anode material for lithium-ion batteries are coated on collector.
Based lithium-ion battery positive plate provided by the invention is applied using the anode material for lithium-ion batteries including polyethylene oxide
It is overlying on collector and is prepared, reduce the environmental pollution in preparation process, eliminate health hidden danger, saved the energy,
Reduce the processing cost of lithium ion battery.
In the preferred embodiment of the present invention, collector is aluminium foil or alloy foil.
By selecting aluminium foil or alloy foil to be used as the collector of based lithium-ion battery positive plate, to keep lithium ion battery just
The good electrical property of pole piece.Aluminium alloy includes ferroaluminium and albronze etc..
According to the third aspect of the present invention, the present invention provides the preparation method of above-mentioned based lithium-ion battery positive plate, packets
Include following steps：
(a) anode material for lithium-ion batteries is added to the water and is uniformly dispersed, lithium ion battery anode glue size is made；
(b) on a current collector by lithium ion battery anode glue size coating, it then is dried and roll-in, obtains lithium-ion electric
Pond positive plate.
The preparation method of based lithium-ion battery positive plate provided by the invention replaces N- methyl pyrroles using cheap non-harmful water
Pyrrolidone reduces environmental pollution as solvent, eliminates health hidden danger, has saved the energy, reduced lithium ion battery
Processing cost.
According to the fourth aspect of the present invention, the present invention provides a kind of lithium ion batteries, including lithium provided by the invention
Ion battery positive electrode or based lithium-ion battery positive plate provided by the invention.
Lithium ion battery provided by the invention is soluble in water using anode material for lithium-ion batteries provided by the invention, is made
It is coated on collector and is prepared after lithium ion battery anode glue size, reduce the manufacturing cost of lithium ion battery, be suitable for
Large-scale promotion and application.
Technical solution provided by the invention is further described with reference to embodiment and comparative example.
Embodiment 1
A kind of lithium ion battery, including based lithium-ion battery positive plate and anode plate for lithium ionic cell are present embodiments provided,
Its based lithium-ion battery positive plate by based lithium-ion battery positive plate be coated on aluminium foil on be prepared, anode material for lithium-ion batteries by
The following raw material by mass percentage is prepared：Nickle cobalt lithium manganate：95.5%, polyethylene oxide：2% and acetylene black：
2.5%；Wherein, the number-average molecular weight of polyethylene oxide is 1,000,000.
The preparation process of based lithium-ion battery positive plate is as follows：
(a) anode material for lithium-ion batteries is added to the water and is uniformly dispersed, lithium ion battery anode glue size is made；
(b) lithium ion battery anode glue size is coated on aluminium foil, then be dried, dry temperature is 65 DEG C, dry
It roll-in and cuts again afterwards, obtains based lithium-ion battery positive plate.
Battery core is made in based lithium-ion battery positive plate in a winding manner, finally battery core is placed in battery steel shell, is made
Lithium ion battery, wherein the anode plate for lithium ionic cell is coated on copper foil by lithium ion battery negative material and is prepared,
Lithium ion battery negative material is prepared by the following raw material by mass percentage：Graphite：96%, acetylene black：1.5%,
Sodium carboxymethylcellulose (CMC)：1.5%, butadiene-styrene rubber (SBR)：1%.
Embodiment 2
A kind of lithium ion battery, including based lithium-ion battery positive plate and anode plate for lithium ionic cell are present embodiments provided,
Based lithium-ion battery positive plate is coated on copper foil by anode material for lithium-ion batteries and is prepared, anode material for lithium-ion batteries
Including the following raw material by mass percentage：Nickle cobalt lithium manganate：70%, LiMn2O4：26%, polyethylene oxide：0.5%,
LA132:1%, acetylene black：1.5%, electrically conductive graphite (KS6)：1%；Wherein the number-average molecular weight of polyethylene oxide is 5,000,000.
The preparation process of based lithium-ion battery positive plate is as follows：
(a) anode material for lithium-ion batteries is added to the water and is uniformly dispersed, lithium ion battery anode glue size is made；
(b) lithium ion battery anode glue size is coated on aluminium foil, then be dried, dry temperature is 70 DEG C, dry
It roll-in and cuts again afterwards, obtains based lithium-ion battery positive plate.
Battery core is made in based lithium-ion battery positive plate in a winding manner, finally battery core is placed in battery steel shell, is made
Lithium ion battery, wherein the anode plate for lithium ionic cell is identical as embodiment 1.
Embodiment 3
A kind of lithium ion battery, including based lithium-ion battery positive plate and anode plate for lithium ionic cell are present embodiments provided,
Based lithium-ion battery positive plate is coated on aluminium foil by anode material for lithium-ion batteries and is prepared, anode material for lithium-ion batteries
Including the following raw material by mass percentage：Nickle cobalt lithium manganate：95.9%, polyethylene oxide：0.8%, butadiene-styrene rubber
(SBR)：0.8%, acetylene black：1.5% and electrically conductive graphite (KS6)：1%；Wherein the number-average molecular weight of polyethylene oxide is 200
Ten thousand.
The preparation process of based lithium-ion battery positive plate is as follows：
(a) anode material for lithium-ion batteries is added to the water and is uniformly dispersed, lithium ion battery anode glue size is made；
(b) lithium ion battery anode glue size is coated on aluminium foil, then be dried, dry temperature is 60 DEG C, dry
It roll-in and cuts again afterwards, obtains based lithium-ion battery positive plate.
Battery core is made in based lithium-ion battery positive plate in a winding manner, finally battery core is placed in battery steel shell, is made
Lithium ion battery, wherein the anode plate for lithium ionic cell is identical as embodiment 1.
Embodiment 4
A kind of lithium ion battery, including based lithium-ion battery positive plate and anode plate for lithium ionic cell are present embodiments provided,
Based lithium-ion battery positive plate is coated on aluminium foil by anode material for lithium-ion batteries and is prepared, anode material for lithium-ion batteries
Including the following raw material by mass percentage：LiFePO4：96%, polyethylene oxide：0.9%, carboxymethyl cellulose acid sodium
(CMC):0.6%, acetylene black：1.5% and electrically conductive graphite (KS6)：1%；Wherein, the number-average molecular weight of polyethylene oxide is 400
Ten thousand.
The preparation process of based lithium-ion battery positive plate is as follows：
(a) anode material for lithium-ion batteries is added to the water and is uniformly dispersed, lithium ion battery anode glue size is made；
(b) lithium ion battery anode glue size is coated on aluminium foil, then be dried, dry temperature is 105 DEG C, dry
It roll-in and cuts again afterwards, obtains based lithium-ion battery positive plate.
Battery core is made in based lithium-ion battery positive plate in a winding manner, finally battery core is placed in battery steel shell, is made
Lithium ion battery, wherein the anode plate for lithium ionic cell is identical as embodiment 1.
Embodiment 5
A kind of lithium ion battery, including based lithium-ion battery positive plate and anode plate for lithium ionic cell are present embodiments provided,
Based lithium-ion battery positive plate is coated on aluminium foil by anode material for lithium-ion batteries and is prepared, anode material for lithium-ion batteries
Including the following raw material by mass percentage：LiMn2O4：95%, polyethylene oxide：2.5%, acetylene black：1.5, electrically conductive graphite
(KS6)：1%；Wherein, the number-average molecular weight of polyethylene oxide is 3,000,000.
The preparation process of based lithium-ion battery positive plate is as follows：
(a) anode material for lithium-ion batteries is added to the water and is uniformly dispersed, lithium ion battery anode glue size is made；
(b) lithium ion battery anode glue size is coated on aluminium foil, then be dried, dry temperature is 95 DEG C, dry
It roll-in and cuts again afterwards, obtains based lithium-ion battery positive plate.
Battery core is made in based lithium-ion battery positive plate in a winding manner, finally battery core is placed in battery steel shell, is made
Lithium ion battery, wherein the anode plate for lithium ionic cell is identical as embodiment 1.
Comparative example 1
Present embodiments provide a kind of lithium ion battery, based lithium-ion battery positive plate and embodiment 1 difference lies in,
Used adhesive is Vingon, and it is N-Methyl pyrrolidone to prepare solvent used by slurry.
The lithium ion battery that above-described embodiment 1-5 lithium ion batteries provided and comparative example 1 provide charge and discharge have been subjected to
Test, test condition are as follows：Constant-current constant-voltage charging：Blanking voltage 4.2V, charging current 2400mA, cut-off current 100mA, environment
Temperature：25℃；Constant-current discharge：Blanking voltage 3.0V, discharge current 2400mA, 25 DEG C of environment temperature；Test result such as 1 institute of table
Show：
1 lithium ion battery electrical performance data of table tests table
As can be seen from Table 1, embodiment 1-5 provide lithium ion battery charging capacity and discharge capacity with comparison
The lithium ion battery that example 1 provides is suitable, is not decreased obviously.
In addition, Fig. 1 is the charge-discharge performance test curve for the lithium ion battery that the embodiment of the present invention 1 provides；Fig. 2 is this hair
The charge-discharge performance test curve for the lithium ion battery that bright comparative example 1 provides；Embodiment 1 is can be seen that from Fig. 1 and Fig. 2 to provide
Lithium ion battery electric performance test curve it is suitable with the electric performance test curve of lithium ion battery that comparative example 1 provides, this
Also explanation replaces N-Methyl pyrrolidone as solvent using cheap non-harmful water, using the adhesive including polyethylene oxide
Instead of Vingon, the anode material for lithium-ion batteries function admirable being prepared, electrical property gathers inclined chloroethene with conventionally employed
Alkene is suitable as the anode material for lithium-ion batteries of adhesive.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of anode material for lithium-ion batteries, which is characterized in that described including positive active material, conductive agent and adhesive
Adhesive includes polyethylene oxide.
2. anode material for lithium-ion batteries according to claim 1, which is characterized in that described adhesive further includes polypropylene
Acid, tetrafluoroethene, Vingon, soluble poly tetrafluoroethene, butadiene-styrene rubber, hydroxypropyl methyl cellulose, methylcellulose,
In carboxymethyl cellulose, polyvinyl alcohol, polyacrylamide, acrylonitrile copolymer, sodium alginate, chitosan and chitosan derivatives
At least one.
3. anode material for lithium-ion batteries according to claim 1, which is characterized in that the number of the polyethylene oxide is divided equally
Son amount is 100-500 ten thousand.
4. anode material for lithium-ion batteries according to claim 1, which is characterized in that the positive active material is selected from cobalt
Sour lithium, LiMn2O4, lithium nickelate, LiFePO4, phosphoric acid vanadium lithium, lithium manganese phosphate, nickel cobalt manganese oxidate for lithium and nickel cobalt aluminium oxidate for lithium
At least one of.
5. anode material for lithium-ion batteries according to claim 1, which is characterized in that the conductive agent is selected from graphite, carbon
At least one of black, acetylene black, graphene, carbon fiber and carbon nanotube.
6. according to claim 1-5 any one of them anode material for lithium-ion batteries, which is characterized in that described adhesive accounts for lithium
The 0.6-25wt% of ion battery positive electrode, and the polyethylene oxide is not less than described adhesive 1wt%；
Preferably, polyethylene oxide accounts for the 0.6-2.5wt% of anode material for lithium-ion batteries.
7. a kind of based lithium-ion battery positive plate, which is characterized in that just including claim 1-6 any one of them lithium ion battery
Pole material and collector, the anode material for lithium-ion batteries are coated on the collector.
8. based lithium-ion battery positive plate according to claim 7, which is characterized in that the collector is aluminium foil or aluminium alloy
Foil.
9. the preparation method of based lithium-ion battery positive plate according to claim 7 or 8, which is characterized in that including walking as follows
Suddenly：
(a) anode material for lithium-ion batteries is added to the water and is uniformly dispersed, lithium ion battery anode glue size is made；
(b) on a current collector by lithium ion battery anode glue size coating, it then is dried and roll-in, is obtaining lithium ion battery just
Pole piece.
10. a kind of lithium ion battery, which is characterized in that including claim 1-6 any one of them lithium ion cell positive materials
Based lithium-ion battery positive plate described in material or claim 7 or 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810069916.0A CN108281660A (en) | 2018-01-24 | 2018-01-24 | Anode material for lithium-ion batteries, based lithium-ion battery positive plate and preparation method thereof and lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810069916.0A CN108281660A (en) | 2018-01-24 | 2018-01-24 | Anode material for lithium-ion batteries, based lithium-ion battery positive plate and preparation method thereof and lithium ion battery |
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| CN109360936A (en) * | 2018-11-01 | 2019-02-19 | 天能电池集团有限公司 | A kind of based lithium-ion battery positive plate and preparation method thereof |
| CN112563483A (en) * | 2020-12-14 | 2021-03-26 | 广西卓能新能源科技有限公司 | Positive active material slurry of lithium ion battery and preparation method |
| CN114843589A (en) * | 2022-06-06 | 2022-08-02 | 张新庄 | Solid ternary lithium heat conduction battery |
| CN115312745A (en) * | 2022-09-16 | 2022-11-08 | 深圳市研一新材料有限责任公司 | Composite positive electrode active material and preparation method and application thereof |
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