CN109256523A - A kind of preparation method for the lithium ion battery improving high-voltage anode material comprehensive performance - Google Patents
A kind of preparation method for the lithium ion battery improving high-voltage anode material comprehensive performance Download PDFInfo
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- CN109256523A CN109256523A CN201811077580.9A CN201811077580A CN109256523A CN 109256523 A CN109256523 A CN 109256523A CN 201811077580 A CN201811077580 A CN 201811077580A CN 109256523 A CN109256523 A CN 109256523A
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- anode
- main material
- binder
- sizing agent
- coating
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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
- 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
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
A kind of preparation method for the lithium ion battery improving high-voltage anode material comprehensive performance, belongs to lithium ion battery preparation technical field.The method is as follows: coating the anode sizing agent A that a layer thickness is 5um ~ 25um on plus plate current-collecting body, forms conductive coating；The concrete configuration method of the anode sizing agent A are as follows: conductive agent and binder is first added, is eventually adding positive main material, positive main material average mark 2 ~ 5 times additions；After anode sizing agent A is painted with, the anode sizing agent B that re-coating a layer thickness is 150 ~ 200um, after the completion of coating, routinely sorting is accomplished in production procedure；The invention has the advantages that the slurry dispersibility of first layer coating of the present invention is preferably, positive plate sheet resistance is small, anode polarization can be improved, the slurry solid content of second layer coating is big, the processing performance of anode pole piece can be improved, so as to improve the high current multiplying power discharging property and cycle performance of high-voltage anode material battery.
Description
Technical field
The invention belongs to lithium ion battery preparation technical fields, and in particular to a kind of raising high-voltage anode material is comprehensive
The preparation method of the lithium ion battery of energy.
Background technique
For high-voltage anode material since conductivity is low, positive electrode and conductive agent Topical Dispersion are poor, so that lithium ion battery
There are capacity attenuations in charge and discharge process it is fast, cycle life is short, thickness swelling is big the deficiencies of so that high-voltage anode
Application of the material on lithium ion battery is severely limited.
Summary of the invention
The purpose of the present invention is to solve the cycle performances of the high-voltage anode material of lithium ion battery and high current times
The problem of rate discharge performance difference provides a kind of preparation method of lithium ion battery for improving high-voltage anode material comprehensive performance.
To achieve the above object, the technical solution adopted by the present invention is as follows:
A kind of preparation method for the lithium ion battery improving high-voltage anode material comprehensive performance, the method specific steps are such as
Under:
Step 1: the anode sizing agent A that a layer thickness is 5um ~ 25um is coated on plus plate current-collecting body, forms conductive coating；It is described
Anode sizing agent A concrete configuration method are as follows: conductive agent and binder is first added, is eventually adding positive main material, positive main material is flat
Respectively 2 ~ 5 additions；
Step 2: after anode sizing agent A is painted with, the anode sizing agent B that re-coating a layer thickness is 150 ~ 200um, after the completion of coating,
Routinely sorting is accomplished in production procedure；The concrete configuration method of the anode sizing agent B uses one of following three kinds:
(1) be added positive main material, then plus conductive agent, last adding additives, positive main material be divided into 1 ~ 5 addition；
(2) conductive agent and 15wt.% ~ 40wt.% binder is added, adds positive main material, is eventually adding remaining binder, anode
Main material is divided into 1 ~ 5 addition；
(3) 15wt.% ~ 40wt.% binder is added, adds positive main material, then plus conductive agent, finally plus remaining binder, just
Pole main material is divided into 1 ~ 5 addition；
Step 3: roll-in → sorting.
The beneficial effect of the present invention compared with the existing technology is: the present invention is by coating process twice, in plus plate current-collecting body
The different classes of slurry of upper applied in two coats come improve high-voltage anode material and collector electric conductivity and coating homogeneity, first
Preferably, positive plate sheet resistance is small for the slurry dispersibility of layer coating, can improve anode polarization, the slurry solid content of second layer coating
Greatly, the processing performance of anode pole piece can be improved, so as to improve high-voltage anode material battery high current multiplying power discharging property and
Cycle performance.
Specific embodiment
Below with reference to embodiment, further description of the technical solution of the present invention, and however, it is not limited to this, all right
Technical solution of the present invention is modified or equivalent replacement, without departing from the spirit of the technical scheme of the invention range, should all cover
Among protection scope of the present invention.
Specific embodiment 1: present embodiment record be it is a kind of improve high-voltage anode material comprehensive performance lithium from
The preparation method of sub- battery, specific step is as follows for the method:
Step 1: coating the anode sizing agent A that a layer thickness is 5um ~ 25um on plus plate current-collecting body, forms one layer of preferable conduction
Coating；The concrete configuration method of the anode sizing agent A are as follows: conductive agent and binder is first added, is eventually adding positive main material, just
Pole main material average mark 2 ~ 5 times additions；(this slurry can be prepared in producing line or laboratory)
Step 2: after anode sizing agent A is painted with, the anode sizing agent B that re-coating a layer thickness is 150 ~ 200um, after the completion of coating,
Routinely sorting is accomplished in production procedure；The concrete configuration method of the anode sizing agent B uses one of following three kinds:
(1) be added positive main material, then plus conductive agent, last adding additives, positive main material be divided into 1 ~ 5 addition；
(2) conductive agent and 15wt.% ~ 40wt.% binder is added, adds positive main material, is eventually adding remaining binder, anode
Main material is divided into 1 ~ 5 addition；
(3) 15wt.% ~ 40wt.% binder is added, adds positive main material, then plus conductive agent, finally plus remaining binder, just
Pole main material is divided into 1 ~ 5 addition；
Step 3: roll-in → sorting (is all made of conventional technical means in the art).
Cell fabrication processes: ingredient → coating → roll-in → cutting → film-making → winding → encapsulation → baking fluid injection → chemical conversion
→ bis- envelopes → sorting:
Step 1: positive ingredient, cathode blending；
Step 2: anode coating, cathode coating；
Step 3: positive roll-in, cathode roll-in；
Step 4: anode cutting, cathode cutting；
Step 5: positive film-making, cathode film-making；
Step 6: core winding；
Step 7: core encapsulation；
Step 8: dry battery core toasts fluid injection；
Step 9: battery core chemical conversion；
Step 10: two envelope of battery core；
Step 11: battery core sorting.
Specific embodiment 2: a kind of lithium of raising high-voltage anode material comprehensive performance described in specific embodiment one
The preparation method of ion battery, in step 1, the anode sizing agent A is made of positive main material, conductive agent, binder, described
Positive main material: conductive agent: mass ratio=96.8% of binder ~ 97.2%:1.3% ~ 1.8%:1.0% ~ 1.9%.
A kind of lithium of raising high-voltage anode material comprehensive performance described in three specific embodiment one of specific embodiment
The preparation method of ion battery, in step 2, the anode sizing agent B is made of positive main material, conductive agent, binder, described
Positive main material: conductive agent: mass ratio=96.8% of binder ~ 97.2%:1.3% ~ 1.8%:1.0% ~ 1.9%.
Embodiment 1:
When coating, single two-sided while coating sizing-agent B, consisting of: positive main material=97.2%, conductive agent=1.5%, binder=
1.3%；By roll-in, cutting, film-making, winding, encapsulation, baking fluid injection, chemical conversion, two envelopes, sorting, finally tested.
Embodiment 2:
The anode sizing agent A that a layer thickness is 5 ~ 25um is first coated on plus plate current-collecting body, consisting of: positive main material=97.2%,
Conductive agent=1.8%, binder=1.0%；After anode sizing agent A is painted with, it is coated with the anode sizing agent that a layer thickness is 150 ~ 200um
B, consisting of: positive main material=97.2%, conductive agent=1.5%, binder=1.3%；By roll-in, cutting, film-making, winding, envelope
Dress, baking fluid injection, chemical conversion, two envelopes, sorting, are finally tested.
Embodiment 3:
The anode sizing agent A that a layer thickness is 5 ~ 25um is coated on plus plate current-collecting body, consisting of: positive main material=97.2%, leads
Electric agent=1.7%, binder=1.1%；After anode sizing agent A is painted with, the anode sizing agent B that re-coating a layer thickness is 150 ~ 200um,
Consisting of: positive main material=97.2%, conductive agent=1.5%, binder=1.3%；By roll-in, cutting, film-making, winding, encapsulation,
Fluid injection, chemical conversion, two envelopes, sorting are toasted, is finally tested.
Embodiment 4:
The anode sizing agent A that a layer thickness is 5 ~ 25um is coated on plus plate current-collecting body, consisting of: positive main material=97.2%, leads
Electric agent=1.6%, binder=1.2%；After anode sizing agent A is painted with, the anode sizing agent B that re-coating a layer thickness is 150 ~ 200um,
Consisting of: positive main material=97.2%, conductive agent=1.5%, binder=1.3%；By roll-in, cutting, film-making, winding, encapsulation,
Fluid injection, chemical conversion, two envelopes, sorting are toasted, is finally tested.Above mentioned roll-in, cutting, film-making, winding, encapsulation, baking
Fluid injection, chemical conversion, two envelopes, sorting are this field conventional flowsheet.
The test effect table of 1 embodiment 1 ~ 4 of table
Claims (3)
1. a kind of preparation method for the lithium ion battery for improving high-voltage anode material comprehensive performance, it is characterised in that: the side
Specific step is as follows for method:
Step 1: the anode sizing agent A that a layer thickness is 5um ~ 25um is coated on plus plate current-collecting body, forms conductive coating；It is described
Anode sizing agent A concrete configuration method are as follows: conductive agent and binder is first added, is eventually adding positive main material, positive main material is flat
Respectively 2 ~ 5 additions；
Step 2: after anode sizing agent A is painted with, the anode sizing agent B that re-coating a layer thickness is 150 ~ 200um, after the completion of coating,
Routinely sorting is accomplished in production procedure；The concrete configuration method of the anode sizing agent B uses one of following three kinds:
(1) be added positive main material, then plus conductive agent, last adding additives, positive main material be divided into 1 ~ 5 addition；
(2) conductive agent and 15wt.% ~ 40wt.% binder is added, adds positive main material, is eventually adding remaining binder, anode
Main material is divided into 1 ~ 5 addition；
(3) 15wt.% ~ 40wt.% binder is added, adds positive main material, then plus conductive agent, finally plus remaining binder, just
Pole main material is divided into 1 ~ 5 addition；
Step 3: roll-in → sorting.
2. a kind of preparation side of lithium ion battery for improving high-voltage anode material comprehensive performance according to claim 1
Method, it is characterised in that: in step 1, the anode sizing agent A is made of positive main material, conductive agent, binder, the anode
Main material: conductive agent: mass ratio=96.8% of binder ~ 97.2%:1.3% ~ 1.8%:1.0% ~ 1.9%.
3. a kind of preparation side of lithium ion battery for improving high-voltage anode material comprehensive performance according to claim 1
Method, it is characterised in that: in step 2, the anode sizing agent B is made of positive main material, conductive agent, binder, the anode
Main material: conductive agent: mass ratio=96.8% of binder ~ 97.2%:1.3% ~ 1.8%:1.0% ~ 1.9%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811077580.9A CN109256523A (en) | 2018-09-15 | 2018-09-15 | A kind of preparation method for the lithium ion battery improving high-voltage anode material comprehensive performance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811077580.9A CN109256523A (en) | 2018-09-15 | 2018-09-15 | A kind of preparation method for the lithium ion battery improving high-voltage anode material comprehensive performance |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110581254A (en) * | 2019-10-16 | 2019-12-17 | 珠海冠宇电池有限公司 | Lithium ion battery cathode and preparation method thereof |
| CN111900329A (en) * | 2020-06-23 | 2020-11-06 | 珠海冠宇电池股份有限公司 | Pole piece and preparation method and application thereof |
| CN112018397A (en) * | 2020-09-21 | 2020-12-01 | 珠海冠宇电池股份有限公司 | Positive plate and battery |
| CN112786839A (en) * | 2021-01-29 | 2021-05-11 | 蜂巢能源科技(无锡)有限公司 | Positive plate for solid-state battery and preparation method and application thereof |
| CN112786840A (en) * | 2021-01-29 | 2021-05-11 | 蜂巢能源科技(无锡)有限公司 | Positive plate for solid-state battery and preparation method and application thereof |
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| CB02 | Change of applicant information |
Address after: 519180 Guangdong Province, Zhuhai city Doumen District Xinqing Technology Industrial Park Mount Everest Road No. nine Applicant after: Zhuhai Guanyu Battery Co., Ltd. Address before: 519180 Guangdong Province, Zhuhai city Doumen District Xinqing Technology Industrial Park Mount Everest Road No. nine Applicant before: Zhuhai Coslight Battery Co., Ltd. |
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Address after: 519180 Guangdong Province, Zhuhai city Doumen District Xinqing Technology Industrial Park Mount Everest Road No. nine Applicant after: Zhuhai Guanyu Battery Co., Ltd Address before: 519180 Guangdong Province, Zhuhai city Doumen District Xinqing Technology Industrial Park Mount Everest Road No. nine Applicant before: ZHUHAI COSLIGHT BATTERY Co.,Ltd. |
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Application publication date: 20190122 |
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