CN108258192A - 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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- CN108258192A CN108258192A CN201810068781.6A CN201810068781A CN108258192A CN 108258192 A CN108258192 A CN 108258192A CN 201810068781 A CN201810068781 A CN 201810068781A CN 108258192 A CN108258192 A CN 108258192A
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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
- H01M4/623—Binders being polymers fluorinated 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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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 tetrafluoroethene perfluorinated alkoxy vinyl ether copolymer；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 tetrafluoroethene perfluorinated alkoxy vinyl ether copolymer, it 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, has reduced the technique effect of the processing cost of lithium ion battery.
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, it is special to 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, it is described viscous including positive active material, conductive agent and adhesive
Mixture includes tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer.
Further, described adhesive further includes polyacrylic acid, polytetrafluoroethylene (PTFE), Vingon, polyacrylamide, fourth
Benzene rubber, hydroxypropyl methyl cellulose, methylcellulose, carboxymethyl cellulose, polyvinyl alcohol, acrylonitrile copolymer, alginic acid
At least one of sodium, chitosan and chitosan derivatives.
Further, the tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer gathers including tetrafluoroethylene monomer unit
Close object block and perfluorinated alkoxy vinyl ether monomer unit polymer blocks；
Preferably, the tetrafluoroethylene monomer unit polymer blocks account for tetrafluoroethylene-perfluoro alkoxy vinyl ethers and are total to
Polymers 60-90wt%；
Preferably, the perfluorinated alkoxy vinyl ether monomer is selected from perfluoromethoxy vinyl ethers, pentafluoroethoxy second
One kind in alkene ether, perfluor propoxy base ether, perfluor vinyl butyl ether base ether；
Preferably, the perfluoroalkyl ethylene oxy ether monomer is pentafluoroethoxy vinyl ethers or perfluor propoxy base
Ether.
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% in anode material for lithium-ion batteries, and the tetrafluoroethene-
Perfluorinated alkoxy vinyl ether copolymer is not less than the matter 1wt% of described adhesive.
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 be uniformly dispersed, lithium ion battery anode glue size is made；
(b) by lithium ion battery anode glue size coating on a current collector, 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, using including at least tetrafluoroethylene-perfluoro alkoxy vinyl
The adhesive of ether copolymer replaces Vingon so that can reduce in pulping process using water as solvent in pulping process
Environmental pollution, eliminate health hidden danger, saved the energy, reduced the processing cost of lithium ion battery.
Based lithium-ion battery positive plate provided by the invention is copolymerized using including tetrafluoroethylene-perfluoro alkoxy vinyl ethers
The anode material for lithium-ion batteries of object is coated on collector and is prepared, and reduces the environmental pollution in preparation process, eliminates
Health hidden danger, has saved the energy, reduces 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, eliminates health hidden danger, saved the energy, reduced lithium ion battery as solvent
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 of 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, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the charge-discharge performance test curve of lithium ion battery that the embodiment of the present invention 1 provides；
Fig. 2 is the charge-discharge performance test curve of lithium ion battery that comparative example 1 of the present invention provides.
Specific embodiment
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 part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments 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, can not meet 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 tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer.
Anode material for lithium-ion batteries provided by the invention, using including at least tetrafluoroethylene-perfluoro alkoxy vinyl
The adhesive of ether copolymer replaces Vingon so that can reduce in pulping process using water as solvent in pulping process
Environmental pollution, eliminate health hidden danger, 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), polyacrylamide (PAM), butadiene-styrene rubber (SBR), hydroxypropyl methyl cellulose (HPMC),
Methylcellulose (MC), carboxymethyl cellulose (CMC), polyvinyl alcohol (PVA), acrylonitrile copolymer, sodium alginate, chitosan and
At least one of chitosan derivatives.
Above-mentioned polytetrafluoroethylene (PTFE), Vingon and butadiene-styrene rubber are water emulsion, in order in water can be equal
Even dispersion.
Acrylonitrile copolymer is including LA132, LA133 and LA135 etc..
When adhesive is tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer and the mixture of above-mentioned other adhesives
When, more preferably, positive plate flexibility is more preferably for the adhesiving effect of prepared anode sizing agent and collector.
In the preferred embodiment of the present invention, tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer includes four
Fluoride monomers unit polymer blocks and perfluorinated alkoxy vinyl ether monomer unit polymer blocks；
Preferably, tetrafluoroethylene monomer unit polymer blocks account for tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer
60-90wt%.
In the typical but non-limiting embodiment of the present invention, tetrafluoroethylene monomer unit polymer blocks account for tetrafluoro
Ethylene-perfluorinated alkoxy vinyl ether copolymer 60wt%, 62wt%, 65wt%, 68wt%, 70wt%, 72wt%,
75wt%, 78wt%, 80wt%, 82wt%, 85wt%, 88wt% or 90wt%.
In present invention further optimization embodiment, perfluorinated alkoxy vinyl ether monomer is selected from perfluoromethoxy second
One kind in alkene ether, pentafluoroethoxy vinyl ethers, perfluor propoxy base ether, perfluor vinyl butyl ether base ether, especially
It is the tetrafluoro second when perfluorinated alkoxy vinyl ether monomer is pentafluoroethoxy vinyl ethers or perfluor propoxy base ether
The adhesive property and water solubility of alkene-perfluorinated alkoxy vinyl ether copolymer are more excellent.
In present invention further optimization embodiment, tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer is purchased
From 3M companies.
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 cobalt acid lithium and the mixture of LiMn2O4, lithium nickelate and LiFePO4 it is mixed
Close mixture of object, phosphoric acid vanadium lithium and lithium manganese phosphate etc., can also be in above-mentioned positive active material 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
Mixture of manganese oxidate for lithium etc..
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 graphite and the mixture of carbon black,
Or carbon black and the mixture of acetylene black, the mixture of carbon fiber and carbon nanotube etc., can also be above-mentioned arbitrary three kinds of mixing
Object, the mixture of mixture or carbon black, acetylene black and graphene such as graphite, carbon black and acetylene black etc. also can also be above-mentioned
Any four and four kinds or more of mixture, 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 tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer 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%.
When in anode material for lithium-ion batteries, when adhesive accounts for the 0.6-25wt% of anode material for lithium-ion batteries, and four
When vinyl fluoride-perfluorinated alkoxy vinyl ether copolymer is not less than the 1wt% of adhesive, made of anode material for lithium-ion batteries
The adhesion property of lithium ion battery anode glue size and collector is more preferable.
In present invention further optimization embodiment, tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer accounts for lithium
The 0.6-2.5wt% of ion battery positive electrode.
In the typical but non-limiting embodiment of the present invention, the copolymerization of tetrafluoroethylene-perfluoro alkoxy vinyl ethers
Object account for 0.6wt%, 0.7wt% of anode material for lithium-ion batteries, 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%.
It is 0.6- when tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer accounts for anode material for lithium-ion batteries
During 2.5wt%, the adhesion property of lithium ion battery anode glue size made of anode material for lithium-ion batteries and collector is more preferable.
According to the second aspect of the invention, it the present invention provides a kind of based lithium-ion battery positive plate, is carried including the present invention
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 copolymerized using including tetrafluoroethylene-perfluoro alkoxy vinyl ethers
The anode material for lithium-ion batteries of object is coated on collector and is prepared, and reduces the environmental pollution in preparation process, eliminates
Health hidden danger, has saved the energy, reduces the processing cost of lithium ion battery.
In the preferred embodiment of the present invention, collector is aluminium foil or alloy foil.
By the way that aluminium foil or alloy foil is selected 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 be uniformly dispersed, lithium ion battery anode glue size is made；
(b) by lithium ion battery anode glue size coating on a current collector, 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, eliminates health hidden danger, saved the energy, reduced lithium ion battery as solvent
Processing cost.
According to the fourth aspect of the present invention, the present invention provides a kind of lithium ion battery, 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 is present embodiments provided, including based lithium-ion battery positive plate and anode plate for lithium ionic cell,
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%th, tetrafluoroethylene-perfluoro alkoxy vinyl
Ether copolymer：2% and acetylene black：2.5%；Wherein, tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer for tetrafluoroethene-
Perfluor propoxy base ether block copolymers, and tetrafluoroethylene monomer unit polymer blocks account for the third oxygen of tetrafluoroethene-perfluor
Base vinyl ether co-polymer 90wt%.
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 be 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 85 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%th, acetylene black：1.5%th,
Sodium carboxymethylcellulose (CMC)：1.5%th, butadiene-styrene rubber (SBR)：1%.
Embodiment 2
A kind of lithium ion battery is present embodiments provided, including based lithium-ion battery positive plate and anode plate for lithium ionic cell,
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%th, LiMn2O4：26%th, tetrafluoroethylene-perfluoro alkoxy
Vinyl ether co-polymer：0.5%th, LA132:1%th, acetylene black：1.5%th, electrically conductive graphite (KS6)：1%；
Wherein, tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer is embedding for tetrafluoroethylene-perfluoro ethoxy ethylene base ether
Section copolymer, and tetrafluoroethylene monomer unit polymer blocks account for tetrafluoroethylene-perfluoro ethoxy ethylene base ether copolymer
60wt%.
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 be 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 with embodiment 1.
Embodiment 3
A kind of lithium ion battery is present embodiments provided, including based lithium-ion battery positive plate and anode plate for lithium ionic cell,
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%th, tetrafluoroethylene-perfluoro alkoxy vinyl ethers are total to
Polymers：0.8%th, butadiene-styrene rubber (SBR)：0.8%th, acetylene black：1.5% and electrically conductive graphite (KS6)：1%；Wherein, tetrafluoroethene-
Perfluorinated alkoxy vinyl ether copolymer is tetrafluoroethylene-perfluoro propoxy base ether block copolymers, and tetrafluoroethene list
Body unit polymer blocks account for tetrafluoroethene-perfluor propoxy base ether copolymer 75wt%.
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 be 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 130 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 with embodiment 1.
Embodiment 4
A kind of lithium ion battery is present embodiments provided, including based lithium-ion battery positive plate and anode plate for lithium ionic cell,
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%th, tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer：
0.9%th, carboxymethyl cellulose acid sodium (CMC):0.6%th, acetylene black：1.5% and electrically conductive graphite (KS6)：1%；Wherein, tetrafluoro second
Alkene-perfluorinated alkoxy vinyl ether copolymer is tetrafluoroethylene-perfluoro ethoxy ethylene base ether block copolymers, and tetrafluoroethene
Monomeric unit polymer blocks account for tetrafluoroethylene-perfluoro ethoxy ethylene base ether copolymer 80wt%.
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 be 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 with embodiment 1.
Embodiment 5
A kind of lithium ion battery is present embodiments provided, including based lithium-ion battery positive plate and anode plate for lithium ionic cell,
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%th, tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer：
2.5%th, acetylene black：1.5th, electrically conductive graphite (KS6)：1%；Wherein, tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer is four
Vinyl fluoride-perfluor propoxy base ether block copolymers, and tetrafluoroethylene monomer unit polymer blocks account for tetrafluoroethene-complete
Fluorine propoxy base ether copolymer 85wt%.
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 be 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 with 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 solvent is N-Methyl pyrrolidone used by preparing 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
| Charging capacity (mAh) | Discharge capacity (2270mAh) | |
| Embodiment 1 | 2288 | 2276 |
| Embodiment 2 | 2280 | 2271 |
| Embodiment 3 | 2285 | 2276 |
| Embodiment 4 | 2286 | 2279 |
| Embodiment 5 | 2283 | 2275 |
| Comparative example 1 | 2280 | 2276 |
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 of 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 for the lithium ion battery that comparative example 1 provides, this
Also explanation replaces N-Methyl pyrrolidone as solvent using cheap non-harmful water, using including tetrafluoroethylene-perfluoro alcoxyl
The adhesive of base vinyl ether co-polymer is instead of Vingon, the anode material for lithium-ion batteries function admirable being prepared,
Electrical property is suitable as the anode material for lithium-ion batteries of adhesive with conventionally employed Vingon.
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
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical features into
Row equivalent replacement；And these modifications or replacement, 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 tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer.
2. anode material for lithium-ion batteries according to claim 1, which is characterized in that described adhesive further includes polypropylene
Acid, tetrafluoroethene, Vingon, polyacrylamide, butadiene-styrene rubber, hydroxypropyl methyl cellulose, methylcellulose, carboxymethyl
At least one of cellulose, polyvinyl alcohol, acrylonitrile copolymer, sodium alginate, chitosan and chitosan derivatives.
3. anode material for lithium-ion batteries according to claim 1, which is characterized in that the tetrafluoroethylene-perfluoro alcoxyl
Base vinyl ether co-polymer includes tetrafluoroethylene monomer unit polymer blocks and perfluorinated alkoxy vinyl ether monomer unit gathers
Close object block；
Preferably, the tetrafluoroethylene monomer unit polymer blocks account for tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer
60-90wt%；
Preferably, the perfluorinated alkoxy vinyl ether monomer is selected from perfluoromethoxy vinyl ethers, pentafluoroethoxy vinyl
One kind in ether, perfluor propoxy base ether, perfluor vinyl butyl ether base ether；
Preferably, the perfluoroalkyl ethylene oxy ether monomer is pentafluoroethoxy vinyl ethers or perfluor propoxy base ether.
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 tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymer is not less than institute
State the 1wt% of adhesive.
7. a kind of based lithium-ion battery positive plate, which is characterized in that including claim 1-6 any one of them lithium ion battery just
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 be uniformly dispersed, lithium ion battery anode glue size is made；
(b) by lithium ion battery anode glue size coating on a current collector, 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 |
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| CN201810068781.6A CN108258192A (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 |
|---|---|---|---|
| CN201810068781.6A CN108258192A (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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Family
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| CN101841037A (en) * | 2009-03-16 | 2010-09-22 | Tdk株式会社 | The manufacture method of active material, active material, electrode and lithium rechargeable battery |
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| CN1394363A (en) * | 2000-04-05 | 2003-01-29 | 松下电器产业株式会社 | Nonaqueous electrolyte secondary cell |
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| CN1692511A (en) * | 2002-03-01 | 2005-11-02 | 松下电器产业株式会社 | Positive electrode active material, production method thereof and non-aqueous electrolyte secondary battery |
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