CN108172763A - A kind of high power electrodes and preparation method thereof - Google Patents
A kind of high power electrodes and preparation method thereof Download PDFInfo
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- CN108172763A CN108172763A CN201711380919.8A CN201711380919A CN108172763A CN 108172763 A CN108172763 A CN 108172763A CN 201711380919 A CN201711380919 A CN 201711380919A CN 108172763 A CN108172763 A CN 108172763A
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- Prior art keywords
- high power
- power electrodes
- electrolyte passage
- electrode
- matter mass
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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
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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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
-
- 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
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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
- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
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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
-
- 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
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- 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
-
- 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
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- 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
- H01M4/1393—Processes of manufacture of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of high power electrodes, it is characterised in that：Collector（1）Upper setting electrolyte passage（2）With active matter mass（3）, electrolyte passage（2）With active matter mass（3）In interval type configuration, single electrolyte passage（2）Width：2 μm~25 μm, single active matter mass（3）Width：50 μm~100 μm.By the present processes, the coating technique specified by application constructs special electrolyte passage, can provide the lithium ion of high-speed transfer nearby, improves the power-performance of electrode on the electrode.
Description
Technical field
The present invention relates to a kind of design preparation methods of lithium ion battery high power electrodes, particularly belong to lithium battery and prepare neck
Domain.
Background technology
It is 21 century most important new high-tech industry that new and renewable energy technology, which is recognized, and wherein electrochemistry is stored up
The developing direction of energy system is high-energy-density, high power and long-life.Lithium-ion battery system is the novel storage occurred in recent years
Can system, have many advantages, such as that light-weight, energy storage is big, power is big, have a safety feature, long lifespan, self discharge coefficient it is small, be to have at present
There is the secondary cell system of most high-energy-density.With the rapid development in new energy market, ratio energy and the specific power requirement of battery
It is higher and higher, there is an urgent need to improve the energy density of current lithium-ion battery system and power-performance, develop energy and power is simultaneous
The double high power lithium-ion batteries cared for.
Invention content
The technical problem to be solved by the present invention is to：It provides a kind of while improves lithium ion battery energy density and power density
Method, keep battery have higher energy density under the premise of, higher power-performance can be provided, to overcome existing skill
It is insufficient existing for art.
The technical scheme is that：A kind of high power electrodes, setting electrolyte passage and active matter mass on collector,
Electrolyte passage and active matter mass are in interval type configuration, single electrolyte passage width：2 μm~25 μm, single active material
Block width：50 μm~100 μm.
The thickness of electrode：100 μm~400 μm.
A kind of high power electrodes preparation method, comprises the steps of：（1）By active material, conductive agent, binding agent
It is uniformly mixed, highly viscous slurry is made；（2）It is by being coextruded coating method, active material and high porosity Carbon materials is same
When coating on a current collector；（3）In 100-150 DEG C of heating to get high power electrodes.
The high porosity Carbon materials are activated carbon.
Beneficial effects of the present invention：Ordinary circumstance, the effective means for improving electrode power performance are exactly to be set using thin electrodes
Meter, to improve the effective electrode area of electrode reaction（Current density size and distribution under high power conditions）, it is possible to provide more
More lithium ion transport channels.But the design of thin electrode can substantially reduce the energy density of battery, have larger limitation,
Battery high-energy-density and high-power performance requirement cannot be taken into account.By the present processes, the coating skill specified by application
Art constructs special electrolyte passage on the electrode, can provide the lithium ion of high-speed transfer nearby, improves the power of electrode
Energy.Meanwhile electrode maintains certain thickness so that battery keeps higher ratio energy.Lithium ion battery disclosed in the present application is high
Power electrode design preparation method can keep the thickness of electrode, maintain the high-energy-density of battery, led to by the electrolyte on electrode
Road provides additional lithium ion source so that thick electrode can carry out multiplying power discharging, solve thickness of electrode and power-performance it
Between contradiction.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
As shown in Figure 1, a kind of high power electrodes, setting electrolyte passage 2 and active matter mass 3, electrolyte on collector 1
Channel 2 and active matter mass 3 are in interval type configuration, single 2 width of electrolyte passage：2 μm~25 μm, single active matter mass 3
Width：50 μm~100 μm.The thickness of electrode：100 μm~400 μm.
A kind of high power electrodes preparation method, comprises the steps of：（1）Active material, conductive agent, binding agent are mixed equal
It is even, highly viscous slurry is made；（2）By being coextruded coating method, active material and high porosity Carbon materials are coated with simultaneously
On a current collector；（3）In 100-150 DEG C of heating to get high power electrodes.The high porosity Carbon materials are activated carbon.
Embodiment 1
Active material is included：Cobalt acid lithium（Or other positive electrodes）67%~90%, carbon black (Super-P) 5%~10%, graphite
(KS-6) 0%~10% and vinylidene fluoride polymer (PVDF) 5%~10% be uniformly mixed, highly viscous slurry is made；（2）Pass through
Coating method is coextruded, active material and high porosity Carbon materials activated carbon are coated on a current collector simultaneously；Collector packet
It includes：The foil of aluminium foil or other forms；Thickness of electrode a：300μm；Electrode width b：80μm；Electrolyte passage width c：15μm；
（3）In 100-150 DEG C of heating, the moisture in activated carbon is removed by high-temperature heating, electrolyte passage is to get high power electrodes.
Embodiment 2
By active material graphite negative electrodes material（Or other negative materials）85%~90%, carbon black 1%~5%, shuttle methylcellulose
Sodium 2%~5% and butadiene-styrene rubber 2%~5% are uniformly mixed, and highly viscous slurry is made；（2）It, will be active by being coextruded coating method
Substance and high porosity Carbon materials activated carbon are coated on a current collector simultaneously；Collector includes：The foil of copper foil or other forms
Material；Thickness of electrode a：200μm；Electrode width b：100μm；Electrolyte passage width c：25μm；（3）In 100-150 DEG C of heating, lead to
The moisture in high-temperature heating removal activated carbon is crossed, electrolyte passage is to get high power electrodes.
Claims (4)
1. a kind of high power electrodes, it is characterised in that：Collector（1）Upper setting electrolyte passage（2）With active matter mass（3）,
Electrolyte passage（2）With active matter mass（3）In interval type configuration, single electrolyte passage（2）Width：It is 2 μm~25 μm, single
Active matter mass（3）Width：50 μm~100 μm.
2. a kind of high power electrodes according to claim 1, it is characterised in that：The thickness of electrode：100 μm~400 μ
m。
3. a kind of high power electrodes preparation method as claimed in claim 1 or 2, it is characterised in that：It comprises the steps of：（1）
Active material, conductive agent, binding agent are uniformly mixed, highly viscous slurry is made；（2）It, will be active by being coextruded coating method
Substance and high porosity Carbon materials are coated on a current collector simultaneously；（3）In 100-150 DEG C of heating to get high power electrodes.
4. a kind of high power electrodes preparation method according to claim 3, it is characterised in that：The high porosity carbons
Material is activated carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711380919.8A CN108172763A (en) | 2017-12-20 | 2017-12-20 | A kind of high power electrodes and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711380919.8A CN108172763A (en) | 2017-12-20 | 2017-12-20 | A kind of high power electrodes and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108172763A true CN108172763A (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711380919.8A Pending CN108172763A (en) | 2017-12-20 | 2017-12-20 | A kind of high power electrodes and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271270A (en) * | 2020-10-22 | 2021-01-26 | 天目湖先进储能技术研究院有限公司 | Lithium ion battery electrode, preparation method thereof and lithium ion battery |
Citations (5)
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| CN101346837A (en) * | 2006-10-12 | 2009-01-14 | 松下电器产业株式会社 | Nonaqueous electrolyte secondary battery and process for producing negative electrode thereof |
| CN103367701A (en) * | 2013-07-18 | 2013-10-23 | 东莞新能源科技有限公司 | Lithium ion battery positive electrode sheet and battery comprising positive electrode sheet |
| CN103904298A (en) * | 2012-12-27 | 2014-07-02 | 帕洛阿尔托研究中心公司 | Advanced, high power and energy battery electrode manufactured by co-extrusion printing |
| CN203932198U (en) * | 2014-05-30 | 2014-11-05 | 比亚迪股份有限公司 | A kind of lithium ion cell electrode sheet and lithium ion battery |
| CN106531961A (en) * | 2017-01-13 | 2017-03-22 | 欣旺达电子股份有限公司 | Electrode pole plate of lithium ion battery, pole plate rolling device and lithium ion battery |
-
2017
- 2017-12-20 CN CN201711380919.8A patent/CN108172763A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101346837A (en) * | 2006-10-12 | 2009-01-14 | 松下电器产业株式会社 | Nonaqueous electrolyte secondary battery and process for producing negative electrode thereof |
| CN103904298A (en) * | 2012-12-27 | 2014-07-02 | 帕洛阿尔托研究中心公司 | Advanced, high power and energy battery electrode manufactured by co-extrusion printing |
| CN103367701A (en) * | 2013-07-18 | 2013-10-23 | 东莞新能源科技有限公司 | Lithium ion battery positive electrode sheet and battery comprising positive electrode sheet |
| CN203932198U (en) * | 2014-05-30 | 2014-11-05 | 比亚迪股份有限公司 | A kind of lithium ion cell electrode sheet and lithium ion battery |
| CN106531961A (en) * | 2017-01-13 | 2017-03-22 | 欣旺达电子股份有限公司 | Electrode pole plate of lithium ion battery, pole plate rolling device and lithium ion battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271270A (en) * | 2020-10-22 | 2021-01-26 | 天目湖先进储能技术研究院有限公司 | Lithium ion battery electrode, preparation method thereof and lithium ion battery |
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Application publication date: 20180615 |
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