CN107978749A - A kind of anode material for lithium-ion batteries slurry and preparation method thereof - Google Patents
A kind of anode material for lithium-ion batteries slurry and preparation method thereof Download PDFInfo
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- CN107978749A CN107978749A CN201711203357.XA CN201711203357A CN107978749A CN 107978749 A CN107978749 A CN 107978749A CN 201711203357 A CN201711203357 A CN 201711203357A CN 107978749 A CN107978749 A CN 107978749A
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/51—Methods 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
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
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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 invention discloses a kind of anode material for lithium-ion batteries slurry and preparation method thereof, stirring technique is mediated using height, solvent substep is added in solid powder thing, realize that mixing time is short, viscosity is more stable into slurry effect using the solid powder of height and high kneading mode, so as to improve the performance of anode material for lithium-ion batteries.
Description
Technical field
The invention belongs to field of lithium ion battery, specifically, be related to a kind of anode material for lithium-ion batteries slurry and its
Preparation method.
Background technology
Long-time service using coal, oil, three big main energy sources of natural gas as representative fossil fuel so that energy resource structure does not conform to
Reason, environmental pollution is serious, in particular with the increasingly reduction of three big main energy sources reserves, and the global warming thus triggered and
The deterioration of the ecological environment is subject to people more and more to pay close attention to.And develop clean reproducible new energy be from now in world economy most
Has one of technical field of decisive influence.In energy development, natural force such as wind energy, tide energy, solar energy etc. are made full use of
It is of great significance, since the effect of these energy is discontinuous, solves using these natural energies, it is necessary to have therewith to match somebody with somebody on a large scale
The energy storage device of set.Lithium ion battery is as a kind of green energy resource, since the beginning of the nineties in last century, since successfully developing, just
With it is higher than energy, operating voltage is high, the wide self-discharge rate of temperature limit is low, have extended cycle life, the unique advantage such as pollution-free
And receive much attention.
The stability of pulp of lithium ion battery has vital effect for battery with two side terminals, the stirring used at present
Machine is planetary mixing plant mostly, its stirring at low speed slurry is viscous by height by the high shear produced between tank skin and agitating paddle
Degree material disperses, and high speed dispersion dish are disperseed by high speed rotation.The drawback is that scattered small particle material is relatively difficult, and
Jitter time can be veryer long, and mixing speed may require that higher, and quantity of heat production bigger, is unfavorable so for actual production.
In view of this it is special to propose the present invention.
The content of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies of the prior art and provide a kind of lithium ion cell positive material
Slurry material and preparation method thereof, stirring technique is mediated using height, and solvent substep is added in solid powder thing, using the solid powder of height and height
Kneading mode realizes that mixing time is short, viscosity is more stable into slurry effect, so as to improve the performance of anode material for lithium-ion batteries.
In order to solve the above technical problems, the present invention is using the basic conception of technical solution：
One aspect of the present invention provides a kind of anode material for lithium-ion batteries slurry preparation method, comprises the following steps：
Step S1, is proportionally added into high mediate in planetary mixer by positive active material, conductive agent, bonding agent and carries out
Premix；
Step S2, is added to high mediate in planetary mixer by first part of solvent and is kneaded；
Step S3, is added to high mediate in planetary mixer by second part of solvent and is mediated；
Step S4, is added to high mediate by the 3rd part of solvent and carries out stirring into slurry in planetary mixer, obtain target slurry.
Further, in the step S1 quality of positive active material account for batch mixing gross mass in the step 88%~
100%, the quality of the conductive agent accounts for the 1%~4% of positive active material gross mass, and the quality of the bonding agent accounts for cathode work
The 2%~6% of property material gross mass.
Further, the quality of first part of solvent accounts for the 20%~35% of positive active material gross mass, described
The quality of two parts of solvents accounts for the 20%~35% of positive active material gross mass, and the quality of the 3rd part of solvent accounts for positive-active
The 20%~40% of material gross mass.
Further, the stirring condition premixed described in the step S1 rotates forward stirring 10~45 minutes for low speed.
Further, the stirring condition being kneaded described in the step S2 is that low speed rotates forward stirring 20 at 30 DEG C~50 DEG C
~30 minutes.
Further, the stirring condition mediated described in the step S3 is the high speed reverse rotation stirring 60 at 30 DEG C~55 DEG C
~100 minutes.
Further, the stirring condition described in the step S4 into slurry stirring is to rotate forward at a high speed to stir at 30 DEG C~55 DEG C
Mix 90~120 minutes.
Further, when being stirred in the step S3 and step S4 it is described it is high mediate planetary mixer internal pressure for-
0.098~-0.095Mpa.
Further, the positive active material is a kind of in cobalt acid lithium, ternary material, LiMn2O4, LiFePO4 or appoints
Meaning combination, the conductive agent is at least conductive carbon black, vapor grown carbon thousand ties up one kind in element, and the bonding agent is polyvinylidene fluoride
Dilute, the solvent is 1-methyl-2-pyrrolidinone.
Another aspect of the present invention provides a kind of anode material for lithium-ion batteries slurry, with above-mentioned anode material for lithium-ion batteries
Slurry preparation method is prepared.
After adopting the above technical scheme, the present invention has the advantages that compared with prior art:
The present invention mediates stirring technique using high, and solvent is added in solid powder thing step by step, is mediated using the solid powder of height with high
Mode realizes that mixing time is short, viscosity is more stable into slurry effect, so as to improve the performance of anode material for lithium-ion batteries.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention,
Technical solution in embodiment is clearly and completely described, following embodiments are used to illustrate the present invention, but are not limited to
The scope of the present invention.
Embodiment one
A kind of anode material for lithium-ion batteries slurry preparation method described in the present embodiment, comprises the following steps：
Step S1, is proportionally added into high mediate in planetary mixer by positive active material, conductive agent, bonding agent and carries out
Premix；
Step S2, is added to high mediate in planetary mixer by first part of solvent and is kneaded；
Step S3, is added to high mediate in planetary mixer by second part of solvent and is mediated；
Step S4, is added to high mediate by the 3rd part of solvent and carries out stirring into slurry in planetary mixer, obtain target slurry.
Specifically, the first step, high kneading planet stirring is proportionally added into by positive active material, conductive agent, bonding agent
It is stirred in machine, wherein, the quality of positive active material accounts for 88% of batch mixing gross mass in the step, and the quality of conductive agent accounts for
The 4% of positive active material gross mass, the quality of bonding agent account for the 6% of positive active material gross mass, by above-mentioned batch mixing in height
Mediate planetary mixer low speed and rotate forward stirring 10 minutes；Positive active material is cobalt acid lithium, ternary material, LiMn2O4, ferric phosphate
A kind of or any combination in lithium, conductive agent is at least conductive carbon black, vapor grown carbon thousand ties up one kind in element, and bonding agent is poly- inclined
Fluorine ethylene；
Second step, Sheng take first part of solvent, and solvent is 1-methyl-2-pyrrolidinone, and the quality of first part of solvent accounts for positive-active
The 20% of material gross mass, first part of solvent of the amount is added in the high kneading planetary mixer of first step stir mixing, this
When, height mediates agitating mode of the planetary mixer using the low speed rotating forward stirring 20 minutes at 30 DEG C；
3rd step, Sheng take second part of solvent, and solvent is 1-methyl-2-pyrrolidinone, and the quality of second part of solvent accounts for positive-active
The 20% of material gross mass, second part of solvent of the amount is added in the high kneading planetary mixer of second step, height mediates planet
Mixer high speed reverse rotation at 30 DEG C stirs 60 minutes, and mixer internal pressure is -0.098Mpa.
4th step, Sheng take the 3rd part of solvent, and solvent is 1-methyl-2-pyrrolidinone, and the quality of the 3rd part of solvent accounts for positive-active
The 20% of material gross mass, the 3rd part of solvent of the amount is added in the high kneading planetary mixer of the 3rd step, inside mixer
Pressure is -0.098Mpa, and height mediates planetary mixer and rotates forward stirring 90 minutes at a high speed at 30 DEG C, obtains target slurry.
Embodiment two
A kind of anode material for lithium-ion batteries slurry preparation method described in the present embodiment, comprises the following steps：
Step S1, is proportionally added into high mediate in planetary mixer by positive active material, conductive agent, bonding agent and carries out
Premix；
Step S2, is added to high mediate in planetary mixer by first part of solvent and is kneaded；
Step S3, is added to high mediate in planetary mixer by second part of solvent and is mediated；
Step S4, is added to high mediate by the 3rd part of solvent and carries out stirring into slurry in planetary mixer, obtain target slurry.
Specifically, the first step, high kneading planet stirring is proportionally added into by positive active material, conductive agent, bonding agent
It is stirred in machine, wherein, the quality of positive active material accounts for 95% of batch mixing gross mass in the step, and the quality of conductive agent accounts for
The 1% of positive active material gross mass, the quality of bonding agent account for the 2% of positive active material gross mass, by above-mentioned batch mixing in height
Mediate planetary mixer low speed and rotate forward stirring 45 minutes；Positive active material is cobalt acid lithium, ternary material, LiMn2O4, ferric phosphate
A kind of or any combination in lithium, conductive agent is at least conductive carbon black, vapor grown carbon thousand ties up one kind in element, and bonding agent is poly- inclined
Fluorine ethylene；
Second step, Sheng take first part of solvent, and solvent is 1-methyl-2-pyrrolidinone, and the quality of first part of solvent accounts for positive-active
The 35% of material gross mass, first part of solvent of the amount is added in the high kneading planetary mixer of first step stir mixing, this
When, height mediates agitating mode of the planetary mixer using the low speed rotating forward stirring 30 minutes at 50 DEG C；
3rd step, Sheng take second part of solvent, and solvent is 1-methyl-2-pyrrolidinone, and the quality of second part of solvent accounts for positive-active
The 35% of material gross mass, second part of solvent of the amount is added in the high kneading planetary mixer of second step, height mediates planet
Mixer high speed reverse rotation at 55 DEG C stirs 100 minutes, and mixer internal pressure is -0.095Mpa.
4th step, Sheng take the 3rd part of solvent, and solvent is 1-methyl-2-pyrrolidinone, and the quality of the 3rd part of solvent accounts for positive-active
The 40% of material gross mass, the 3rd part of solvent of the amount is added in the high kneading planetary mixer of the 3rd step, inside mixer
Pressure is -0.095Mpa, and height mediates planetary mixer and rotates forward stirring 120 minutes at a high speed at 55 DEG C, obtains target slurry.
Stirring technique is mediated using height, solvent substep is added in solid powder thing, it is real using the solid powder of height and high kneading mode
Existing mixing time is short, viscosity is more stable into slurry effect, so as to improve the performance of anode material for lithium-ion batteries.
Embodiment three
A kind of anode material for lithium-ion batteries slurry described in the present embodiment, is prepared with one the method for embodiment.
Comparative example one
A kind of preparation method of lithium ion battery anode glue size, comprises the following steps：
Step S1, adds mixing in mixer by Kynoar and 1-methyl-2-pyrrolidinone and matches somebody with somebody glue；
Step S2, positive electrode is added in mixer；
Step S3, conductive agent is added in mixer；
Step S4,1-methyl-2-pyrrolidinone is added in mixer, is adjusted slurry viscosity, is obtained target slurry.
Embodiment and the slurry index contrast of the stirring production of comparative example one are as follows:
The present invention mediates stirring technique using high, and solvent is added in solid powder thing step by step, is mediated using the solid powder of height with high
Mode realizes that mixing time is short, viscosity is more stable into slurry effect, so as to improve the performance of anode material for lithium-ion batteries.
The above is only presently preferred embodiments of the present invention, not makees limitation in any form to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any technology people for being familiar with this patent
Member without departing from the scope of the present invention, when the technology contents using above-mentioned prompting make it is a little change or be modified to
The equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit pair according to the present invention
Any simple modification, equivalent change and modification that above example is made, in the range of still falling within the present invention program.
Claims (10)
1. a kind of anode material for lithium-ion batteries slurry preparation method, it is characterised in that comprise the following steps：
Step S1, is proportionally added into high mediate in planetary mixer by positive active material, conductive agent, bonding agent and carries out in advance
It is mixed；
Step S2, is added to high mediate in planetary mixer by first part of solvent and is kneaded；
Step S3, is added to high mediate in planetary mixer by second part of solvent and is mediated；
Step S4, is added to high mediate by the 3rd part of solvent and carries out stirring into slurry in planetary mixer, obtain target slurry.
A kind of 2. anode material for lithium-ion batteries slurry preparation method according to claim 1, it is characterised in that the step
The quality of positive active material accounts for 88%~100% of batch mixing gross mass in the step in rapid S1, and the quality of the conductive agent accounts for
The 1%~4% of positive active material gross mass, the quality of the bonding agent account for the 2%~6% of positive active material gross mass.
3. a kind of anode material for lithium-ion batteries slurry preparation method according to claim 1, it is characterised in that described
The quality of a solvent accounts for the 20%~35% of positive active material gross mass, and the quality of second part of solvent accounts for positive-active
The 20%~35% of material gross mass, the quality of the 3rd part of solvent account for the 20%~40% of positive active material gross mass.
A kind of 4. anode material for lithium-ion batteries slurry preparation method according to claim 1, it is characterised in that the step
The stirring condition premixed described in rapid S1 rotates forward stirring 10~45 minutes for low speed.
A kind of 5. anode material for lithium-ion batteries slurry preparation method according to claim 1, it is characterised in that the step
The stirring condition being kneaded described in rapid S2 is that low speed rotates forward stirring 20~30 minutes at 30 DEG C~50 DEG C.
A kind of 6. anode material for lithium-ion batteries slurry preparation method according to claim 1, it is characterised in that the step
The stirring condition mediated described in rapid S3 is that high speed reverse rotation stirs 60~100 minutes at 30 DEG C~55 DEG C.
A kind of 7. anode material for lithium-ion batteries slurry preparation method according to claim 1, it is characterised in that the step
Stirring condition described in rapid S4 into slurry stirring is to rotate forward stirring 90~120 minutes at a high speed at 30 DEG C~55 DEG C.
A kind of 8. anode material for lithium-ion batteries slurry preparation method according to claim 1, it is characterised in that the step
The high planetary mixer internal pressure of mediating is -0.098~-0.095Mpa when being stirred in rapid S3 and step S4.
A kind of 9. anode material for lithium-ion batteries slurry preparation method according to claim 1, it is characterised in that it is described just
Pole active material is cobalt acid lithium, a kind of in ternary material, LiMn2O4, LiFePO4 or any combination, the conductive agent are at least
Conductive carbon black, vapor grown carbon thousand tie up one kind in element, and the bonding agent is polyvinyladine floride, and the solvent is N- methylpyrroles
Alkanone.
10. a kind of anode material for lithium-ion batteries slurry, it is characterised in that with any lithium ion batteries of claim 1-9
Positive electrode slurry preparation method is prepared.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108550793A (en) * | 2018-05-12 | 2018-09-18 | 山东金品能源有限公司 | A kind of preparation method of lithium ion battery anode sizing agent |
| CN108899469A (en) * | 2018-06-29 | 2018-11-27 | 桑顿新能源科技有限公司 | A kind of lithium ion battery negative material slurry and preparation method thereof |
| CN108923029A (en) * | 2018-06-29 | 2018-11-30 | 桑顿新能源科技有限公司 | A kind of lithium ion battery anode glue size preparation method |
| CN112582612A (en) * | 2020-07-03 | 2021-03-30 | 骆驼集团新能源电池有限公司 | Lithium ion battery anode slurry and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108550793A (en) * | 2018-05-12 | 2018-09-18 | 山东金品能源有限公司 | A kind of preparation method of lithium ion battery anode sizing agent |
| CN108899469A (en) * | 2018-06-29 | 2018-11-27 | 桑顿新能源科技有限公司 | A kind of lithium ion battery negative material slurry and preparation method thereof |
| CN108923029A (en) * | 2018-06-29 | 2018-11-30 | 桑顿新能源科技有限公司 | A kind of lithium ion battery anode glue size preparation method |
| CN112582612A (en) * | 2020-07-03 | 2021-03-30 | 骆驼集团新能源电池有限公司 | Lithium ion battery anode slurry and preparation method thereof |
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