CN106410114A - Method for preparing metallic lithium particle electrode slices on large scale - Google Patents
Method for preparing metallic lithium particle electrode slices on large scale Download PDFInfo
- Publication number
- CN106410114A CN106410114A CN201611170515.1A CN201611170515A CN106410114A CN 106410114 A CN106410114 A CN 106410114A CN 201611170515 A CN201611170515 A CN 201611170515A CN 106410114 A CN106410114 A CN 106410114A
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- Prior art keywords
- lithium metal
- electrode piece
- graphite electrode
- large scale
- toluene solution
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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
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention provides a method for preparing metallic lithium particle electrode slices on large scale. The method comprises the following steps that metallic lithium particles are dispersed in butadiene styrene rubber/methylbenzene solution through ultrasonic dispersion, and metallic lithium particle suspension is obtained; the surface of each graphite electrode slice is coated evenly with the metallic lithium particle suspension; under the protection of argon, the graphite electrode slices are heated and dried for 2 h, and the dry metallic lithium particle/graphite electrode slices good in uniformity are obtained after removal of the methylbenzene solution contained in the graphite electrode slices. According to the method, the metallic lithium particle/graphite electrode slices with good uniformity can be obtained, the metallic lithium particles can be dispersed evenly on the electrode slices, and the method is simple and beneficial to large-scale industrialized production.
Description
Technical field
The present invention relates to electrochemical material manufacturing technology field is and in particular to one kind prepares lithium metal mosaic electrode on a large scale
The method of piece.
Background technology
Lithium ion battery is commercialized by Sony first within 1991, opens lithium-ion electric in global range from this
The research boom of pond material.Because lithium ion battery has that energy density is high, lightweight and the features such as life-span length, set as movement
Standby power supply is very popular.But, for the energy density of lithium ion battery itself, the size of its capacity and electrode material kind
Class is closely related.Exploitation high power capacity electrode material be always global range in lithium ion battery worker core work it
One.Graphite is the negative material being currently widely used in lithium ion battery, because it only has the theoretical capacity of 372mAh/g, thus
Constrain the energy density of battery.Lithium anode material has very tempting application prospect, because its theoretical capacity density
Reach 3650mAh/g, be 10 times of conventional graphite electrodes theoretical capacity, be to set up the lithium-ion battery systems of high-energy-density
One of good candidate materials.
During li-ion electrode materials are applied to collector (electrode slice), traditional method is to adopt Kynoar
(PVDF) be mixed to get with 1-METHYLPYRROLIDONE/oiliness (NMP) or sodium carboxymethylcellulose (CMC) and water (water-soluble) viscous
Spend higher solution, and active material is evenly spread in above-mentioned solution, then it is carried out on a current collector even spread.And
In body series, because lithium metal particle has very big chemical reactivity, can steam with the oxygen gas and water in surrounding environment
Gas, nitrogen etc. occur side reaction to cause lithium to lose, and easily react with polar solvent.It is, thus, sought for it is a kind of new
Method preparing lithium metal mosaic electrode piece to overcome the deficiencies in the prior art.
Content of the invention
It is an object of the invention to provide a kind of method preparing lithium metal mosaic electrode piece on a large scale, adopt lithium metal
Grain evenly spreads in butadiene-styrene rubber (SBR)/toluene solution, is coated on graphite electrode piece, obtains the good gold of homogeneity
Belong to lithium particle/graphite electrode piece, achievable lithium metal particle is dispersed on graphite electrode piece, method is simple, be easy to big
Scale industrialization produces.
To achieve these goals, the technical solution used in the present invention is as follows：
A kind of method preparing lithium metal mosaic electrode piece on a large scale, comprises the steps：
1) disperseed using Ultrasound Instrument, by lithium metal even particulate dispersion in butadiene-styrene rubber/toluene solution, obtained gold
Belong to lithium particle suspension liquid；
2) by step 1) lithium metal particle suspension liquid even spread to graphite electrode piece surface；
3) under argon gas protection, heat drying 2h, the toluene solution containing in removing graphite electrode piece, acquisition drying,
The good lithium metal particle/graphite electrode piece of homogeneity.
According to above scheme, in described butadiene-styrene rubber/toluene solution, the mass concentration of butadiene-styrene rubber is 2%, now mixes
Fluid viscosity was 8 centipoise seconds (cPs), metallic lithium powder can dispersed one-tenth suspension wherein, be maintained at not stratified in 10 minutes,
It is advantageous to slurry coats.When butadiene-styrene rubber mass concentration is 4%, its viscosity reached for 17 centipoise seconds (cPs), 6%,
Higher when 8%, system viscosity is unfavorable for greatly very much the carrying out of coating process.
According to above scheme, described coating includes coating machine coating, sprayer coating.
According to above scheme, the method for described coating machine coating is：Uniformly coated using coating machine, by coating machine
Scraper at the uniform velocity passes through graphite electrode piece so that lithium metal particle/butadiene-styrene rubber/toluene solution uniformly divides on graphite electrode piece surface
Dissipate.
According to above scheme, the method for described sprayer coating is：Sprayer is accessed argon gas steel cylinder and connects pressure-reducing valve
Door, by the use of high speed argon gas as medium, lithium metal particle/butadiene-styrene rubber/toluene solution is sprayed on graphite electricity in the way of spraying
Pole piece is so that lithium metal particle/butadiene-styrene rubber/toluene solution is dispersed on graphite electrode piece surface.
According to above scheme, described temperature when being dried is 60 DEG C.Still there is trace due in the drying box of argon gas protection
The oxygen of amount and moisture, if temperature is too high, such as 80 DEG C, or cause lithium pruinescence to aoxidize；Temperature is too low, such as 40 DEG C, can not
Beneficial to quick volatilization in dry run for the n-hexane；By being dried using 60 DEG C, can be effectively by the moisture control of electrode slice
Within making 500ppm, under this moisture concentration, drying effect is preferable.
The butadiene-styrene rubber of present invention use, toluene, metallic lithium powder are all apolar substances, and three can stably deposit together
And there is not side reaction.In the presence of ultrasonic wave, there is strenuous vibration in metallic lithium powder in 2% SBR/ toluene solution,
Strengthen its dispersion effect, the higher slip of final acquisition uniformity, to carry out pole coating.
The present invention with mass fraction be 2% SBR/ toluene solution as binding agent, then lithium metal particle is distributed to it
In, form the preferable suspension of uniformity, and keep not stratified in 10 minutes, then adopt coating machine or the side of sprayer coating
Uniform suspension containing lithium powder is coated in electrode slice surface by method, obtains the good lithium metal mosaic electrode piece of homogeneity.Electricity
The flatness of pole piece can control very good, and under scanning SEM microscope, visible local height difference controls within 30 microns.
The invention has the beneficial effects as follows：
The present invention is coated graphite electrode using by lithium metal even particulate dispersion in butadiene-styrene rubber/toluene solution
On piece, obtain the good lithium metal particle/graphite electrode piece of homogeneity, achievable lithium metal particle on electrode slice uniformly point
Dissipate, method is simple, is easy to large-scale industrialized production.
Specific embodiment
With reference to embodiment, technical scheme is illustrated.
Embodiment 1：
The present invention provides a kind of method preparing lithium metal mosaic electrode piece on a large scale, comprises the steps：
1) adopt ultrasonic disperse, lithium metal particle be dispersed in butadiene-styrene rubber/toluene solution that mass concentration is 2%,
Obtain lithium metal particle suspension liquid；
2) lithium metal particle suspension liquid is transferred to copper plate electrode piece surface：Uniformly coated using coating machine, will be applied
The scraper of cloth machine at the uniform velocity passes through graphite electrode piece so that lithium metal particle/butadiene-styrene rubber/toluene solution is on graphite electrode piece surface
Dispersed；
3) under argon gas protection, 60 DEG C are dried 2h, remove the toluene solution containing in graphite electrode piece, obtain dry,
The good lithium metal particle/graphite electrode piece of homogeneity.
Embodiment 2：
The present invention provides a kind of method preparing lithium metal mosaic electrode piece on a large scale, comprises the steps：
1) adopt ultrasonic disperse, lithium metal particle be dispersed in butadiene-styrene rubber/toluene solution that mass concentration is 2%,
Obtain lithium metal particle suspension liquid；
2) lithium metal particle suspension liquid is coated using the method for sprayer：Sprayer is accessed argon gas steel cylinder and connects
Connect pressure loading valve, by the use of high speed argon gas as medium, lithium metal particle/butadiene-styrene rubber/toluene solution is sprayed in the way of spraying
On graphite electrode piece surface so that lithium metal particle/butadiene-styrene rubber/toluene solution is dispersed on graphite electrode piece surface；
3) under argon gas protection, 60 DEG C are dried 2h, remove the toluene solution containing in graphite electrode piece, obtain dry,
The good lithium metal particle/graphite electrode piece of homogeneity.
Upper embodiment is only in order to illustrative and not limiting technical scheme, although above-described embodiment is carried out to the present invention
Describe in detail, the person skilled of this area should be understood：The present invention can be modified or replace on an equal basis, but not
Depart from any modification of spirit and scope of the invention and local is replaced and all should be covered in scope of the presently claimed invention.
Claims (6)
1. a kind of method preparing lithium metal mosaic electrode piece on a large scale is it is characterised in that comprise the steps：
1) disperseed using Ultrasound Instrument, by lithium metal even particulate dispersion in butadiene-styrene rubber/toluene solution, obtained lithium metal
Particle suspension liquid；
2) by step 1) lithium metal particle suspension liquid even spread to graphite electrode piece surface；
3) under argon gas protection, heat drying 2h, remove the toluene solution containing in graphite electrode piece, acquisition drying, homogeneous
The good lithium metal particle/graphite electrode piece of property.
2. the method preparing lithium metal mosaic electrode piece on a large scale according to claim 1 is it is characterised in that described butylbenzene
In rubber/toluene solution, the mass concentration of butadiene-styrene rubber is 2%.
3. the method preparing lithium metal mosaic electrode piece on a large scale according to claim 1 is it is characterised in that described coating
Including coating machine coating, sprayer coating.
4. the method preparing lithium metal mosaic electrode piece on a large scale according to claim 1 or 3 is it is characterised in that described
Coating machine coating method be：Uniformly coated using coating machine, the scraper of coating machine is at the uniform velocity passed through graphite electrode piece, makes
Obtain lithium metal particle/butadiene-styrene rubber/toluene solution dispersed on graphite electrode piece surface.
5. the method preparing lithium metal mosaic electrode piece on a large scale according to claim 1 or 3 is it is characterised in that described
Sprayer coating method be：Sprayer is accessed argon gas steel cylinder and connects pressure loading valve, by the use of high speed argon gas as medium, will
Lithium metal particle/butadiene-styrene rubber/toluene solution is sprayed on graphite electrode piece surface in the way of spraying so that lithium metal particle/fourth
Benzene rubber/toluene solution is dispersed on graphite electrode piece surface.
6. the method preparing lithium metal mosaic electrode piece on a large scale according to claim 1 is it is characterised in that described drying
When temperature be 60 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611170515.1A CN106410114A (en) | 2016-12-16 | 2016-12-16 | Method for preparing metallic lithium particle electrode slices on large scale |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170515.1A CN106410114A (en) | 2016-12-16 | 2016-12-16 | Method for preparing metallic lithium particle electrode slices on large scale |
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| CN106410114A true CN106410114A (en) | 2017-02-15 |
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| CN201611170515.1A Pending CN106410114A (en) | 2016-12-16 | 2016-12-16 | Method for preparing metallic lithium particle electrode slices on large scale |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109942055A (en) * | 2019-02-24 | 2019-06-28 | 贵州省过程工业技术研究中心 | A kind of organic wastewater electrochemical process for treating and device |
Citations (6)
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| US20040002005A1 (en) * | 2000-12-22 | 2004-01-01 | Yuan Gao | Lithium metal dispersion in secondary battery anodes |
| TW200608622A (en) * | 2004-06-24 | 2006-03-01 | Aea Technology Battery Systems Ltd | Anode for lithium ion cell |
| CN102983222A (en) * | 2012-12-06 | 2013-03-20 | 许昌天地和光能源有限公司 | Preparation method for absorption layer with gradient band gap distribution |
| CN103918108A (en) * | 2011-10-05 | 2014-07-09 | 加州大学校务委员会 | Lithium metal doped electrodes for lithium-ion rechargeable chemistry |
| CN103943825A (en) * | 2014-04-24 | 2014-07-23 | 徐兆清 | Lithium element supplementing method for electrode of lithium ion battery |
| CN104409224A (en) * | 2013-11-28 | 2015-03-11 | 东莞市长安东阳光铝业研发有限公司 | Cathode plate for lithium-ion capacitor and production method of cathode plate |
-
2016
- 2016-12-16 CN CN201611170515.1A patent/CN106410114A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040002005A1 (en) * | 2000-12-22 | 2004-01-01 | Yuan Gao | Lithium metal dispersion in secondary battery anodes |
| TW200608622A (en) * | 2004-06-24 | 2006-03-01 | Aea Technology Battery Systems Ltd | Anode for lithium ion cell |
| CN103918108A (en) * | 2011-10-05 | 2014-07-09 | 加州大学校务委员会 | Lithium metal doped electrodes for lithium-ion rechargeable chemistry |
| CN102983222A (en) * | 2012-12-06 | 2013-03-20 | 许昌天地和光能源有限公司 | Preparation method for absorption layer with gradient band gap distribution |
| CN104409224A (en) * | 2013-11-28 | 2015-03-11 | 东莞市长安东阳光铝业研发有限公司 | Cathode plate for lithium-ion capacitor and production method of cathode plate |
| CN103943825A (en) * | 2014-04-24 | 2014-07-23 | 徐兆清 | Lithium element supplementing method for electrode of lithium ion battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109942055A (en) * | 2019-02-24 | 2019-06-28 | 贵州省过程工业技术研究中心 | A kind of organic wastewater electrochemical process for treating and device |
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Application publication date: 20170215 |