CN112201851B - Solid electrolyte slurry, preparation method thereof, diaphragm and lithium battery - Google Patents
Solid electrolyte slurry, preparation method thereof, diaphragm and lithium battery Download PDFInfo
- Publication number
- CN112201851B CN112201851B CN202011140158.0A CN202011140158A CN112201851B CN 112201851 B CN112201851 B CN 112201851B CN 202011140158 A CN202011140158 A CN 202011140158A CN 112201851 B CN112201851 B CN 112201851B
- Authority
- CN
- China
- Prior art keywords
- solid electrolyte
- preparation
- slurry
- coating
- organic solvent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007784 solid electrolyte Substances 0.000 title claims abstract description 116
- 239000002002 slurry Substances 0.000 title claims abstract description 63
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 239000003960 organic solvent Substances 0.000 claims abstract description 42
- 239000002131 composite material Substances 0.000 claims abstract description 34
- 239000004094 surface-active agent Substances 0.000 claims abstract description 17
- 229910003480 inorganic solid Inorganic materials 0.000 claims abstract description 13
- 239000011230 binding agent Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 239000012528 membrane Substances 0.000 claims description 42
- 238000000576 coating method Methods 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 25
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical group CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 17
- 238000007581 slurry coating method Methods 0.000 claims description 11
- 238000007756 gravure coating Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052710 silicon Inorganic materials 0.000 abstract description 12
- 239000010703 silicon Substances 0.000 abstract description 12
- 239000002904 solvent Substances 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000004090 dissolution Methods 0.000 abstract description 3
- 239000007772 electrode material Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007086 side reaction Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 10
- 239000002033 PVDF binder Substances 0.000 description 7
- 239000004205 dimethyl polysiloxane Substances 0.000 description 7
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 7
- -1 polydimethylsiloxane Polymers 0.000 description 7
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910000857 LiTi2(PO4)3 Inorganic materials 0.000 description 2
- 229910013461 LiZr2(PO4)3 Inorganic materials 0.000 description 2
- 239000011244 liquid electrolyte Substances 0.000 description 2
- 229910000664 lithium aluminum titanium phosphates (LATP) Inorganic materials 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- 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
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0562—Solid materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0085—Immobilising or gelification of electrolyte
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Secondary Cells (AREA)
- Cell Separators (AREA)
Abstract
本发明属于锂电池制造技术领域，具体涉及一种固态电解质浆料及制备方法、隔膜、锂电池，其中固态电解质浆料的制备方法，包括以下步骤：制备复合有机溶剂；制备固态电解质浆料，即将无机固态电解质粉末、有机硅表面活性剂、粘结剂加入到复合有机溶剂中进行搅拌。本发明提供的固态电解质浆料采用有机硅表面活性剂，提高了固态电解质在复合有机溶剂中的溶解效率；同时还增加了固态电解质与多孔隔离膜以及锂电池电极材料的结合力；采用复合有机溶剂作为固态电解质浆料制备的溶剂，不仅降低了浆料涂覆于多孔隔离膜后的溶剂残留，还避免了水的加入，减少了锂电池中有水参加的副反应的发生，进一步提高了使用该隔膜制得的锂电池的安全性。
The invention belongs to the technical field of lithium battery manufacturing, and in particular relates to a solid electrolyte slurry and a preparation method thereof, a diaphragm, and a lithium battery. The preparation method of the solid electrolyte slurry includes the following steps: preparing a composite organic solvent; preparing a solid electrolyte slurry, That is, the inorganic solid electrolyte powder, the organic silicon surfactant and the binder are added to the composite organic solvent for stirring. The solid electrolyte slurry provided by the invention adopts the organic silicon surfactant, which improves the dissolution efficiency of the solid electrolyte in the composite organic solvent; at the same time, it also increases the bonding force of the solid electrolyte with the porous separator and the lithium battery electrode material; the composite organic The solvent is used as a solvent for the preparation of solid electrolyte slurry, which not only reduces the solvent residue after the slurry is coated on the porous separator, but also avoids the addition of water, reduces the occurrence of side reactions involving water in the lithium battery, and further improves the Safety of lithium batteries prepared using the separator.
Description
Technical Field
The invention belongs to the technical field of lithium battery manufacturing, and particularly relates to solid electrolyte slurry, a preparation method of the solid electrolyte slurry, a diaphragm and a lithium battery.
Background
With the development of the microelectronic technology in the twentieth century, miniaturized devices are increasing day by day, and lithium batteries are widely applied to mobile phones, notebook computers, electric tools, electric vehicles, street lamp standby power supplies, navigation lamps and small household appliances. With the application of lithium batteries in miniaturized portable devices becoming more and more widespread, the safety problem of lithium batteries has attracted more and more attention of people.
The traditional lithium ion battery at present uses an organic liquid electrolyte, and the problems of easy leakage, easy volatilization, flammability, poor safety and the like cause the poor stability of the organic liquid electrolyte and the particularly obvious safety problem of the lithium battery; when the utility model is hit by external force, explosion is easy to be caused. Especially, at present, in many portable electronic products such as mobile phones and portable computers, the used batteries are lithium batteries, so the safety problem of the lithium batteries is more concerned by people.
Disclosure of Invention
The invention provides solid electrolyte slurry, a preparation method thereof, a diaphragm and a lithium battery.
In order to solve the technical problem, the invention provides a preparation method of solid electrolyte slurry, which comprises the following steps: preparing a composite organic solvent; preparing solid electrolyte slurry, namely adding inorganic solid electrolyte powder, an organic silicon surfactant and a binder into a composite organic solvent for stirring.
In a second aspect, the present invention also provides a solid electrolyte slurry, comprising the following raw materials: inorganic solid electrolyte, organic silicon surfactant, binder and organic solvent; wherein the inorganic solid electrolyte is LiT2(PO4)3Wherein T is one or more of Ti, Cr and Zr.
In a third aspect, the present invention also provides a method for preparing a solid electrolyte membrane, comprising the steps of: slurry coating, coating the solid electrolyte slurry as described above onto a porous separator; and (5) drying and rolling, namely drying the porous isolating membrane coated with the solid electrolyte slurry and then rolling.
In a fourth aspect, the present invention also provides a solid electrolyte membrane comprising: a porous separator coated on one or both sides with the solid electrolyte slurry as described above; the thickness of the solid electrolyte membrane is 1-50 μm; the porosity of the solid electrolyte membrane is 25-90%.
In a fifth aspect, the present invention further provides a lithium battery, including: a diaphragm; the separator is suitably a solid electrolyte separator as described above.
The solid electrolyte slurry provided by the invention adopts the organic silicon surfactant, so that the dissolving efficiency of the solid electrolyte in the composite organic solvent is improved; meanwhile, the binding force of the solid electrolyte, the porous isolating membrane and the electrode material of the lithium battery is increased; the composite organic solvent is used as the solvent for preparing the solid electrolyte slurry, so that the solvent residue after the slurry is coated on the porous isolating membrane is reduced, the addition of water is avoided, the occurrence of side reactions of water in the lithium battery is reduced, and the safety of the lithium battery prepared by using the diaphragm is further improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a solid electrolyte slurry single-side coated separator of the present invention;
fig. 2 is a schematic view of the structure of a solid electrolyte slurry double-coated separator of the present invention.
In the figure:
1-a porous separator; 2-solid electrolyte paste.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to improve the safety of the lithium battery, the invention provides a preparation method of solid electrolyte slurry, which comprises the following steps: preparing a composite organic solvent; preparing solid electrolyte slurry, namely adding inorganic solid electrolyte powder, organic silicon surfactant and binder into a composite organic solvent together and stirring.
Wherein the composite organic solvent is a composition of acetone, NMP and DMAc; and the weight ratio of acetone, NMP and DMAc is 1:2: 3.
Alternatively, the silicone surfactant may be, but is not limited to, polydimethylsiloxane.
Specifically, the addition of the organic silicon surfactant increases organic functional groups on the surface of the solid electrolyte, and improves the dissolution efficiency of the solid electrolyte in the composite organic solvent.
Wherein the solid electrolyte is LiT2(PO4)3Wherein T is Ti, Cr, Zr; the LiT2(PO4)3The particle size distribution D50 is 0.1 to 5.0 μm.
Alternatively, the particle size distribution D50 of the LATP may be, but is not limited to, 0.3 μm, 0.8 μm, 1.9 μm, 2.7 μm, 3.8 μm, 4.6 μm, and preferably may be 0.5 μm, 0.9 μm, 1.4 μm, 1.7 μm, 2.0 μm.
Alternatively, the binder may be, but is not limited to, a PVDF binder.
Optionally, the solid electrolyte slurry comprises the following components in parts by mass: 1 part of inorganic solid electrolyte; 0.05-0.15 part of organic silicon surfactant; 0.02-0.05 part of binder; 1.0-8.0 parts of a composite organic solvent.
Optionally, the silicone surfactant may be, but is not limited to, 0.05 parts, 0.08 parts, 0.10 parts, 0.15 parts; the binder may be, but is not limited to, 0.02 parts, 0.03 parts, 0.04 parts, 0.05 parts; the composite organic solvent may be, but not limited to, 1.0 part, 3.0 parts, 5.0 parts, 6.8 parts, 8.0 parts.
Further, the invention also provides solid electrolyte slurry which comprises the following raw materials: inorganic solid electrolyte, organic silicon surfactant, binder and organic solvent; wherein the inorganic solid electrolyte is LATP, i.e. LIT2(PO4)3Wherein T is Ti, Cr, Zr.
According to the preparation method of the solid electrolyte slurry, the organic silicon surfactant is used for erecting a bridge with compatible interface between the solid electrolyte and the composite organic solvent, so that the efficiency of dissolving the solid electrolyte in the organic solvent and the binding force between the solid electrolyte and the porous isolating membrane are improved; and simultaneously, the acetone, NMP and DMAc are combined into the composite organic solvent, so that the dissolving efficiency of the solid electrolyte is improved, the solvent residual rate after the prepared solid electrolyte slurry is coated on the porous isolating membrane is reduced, and the safety of the lithium battery is further improved.
Further, in order to improve the safety of the lithium battery and reduce the use of organic electrolyte, the invention also provides a preparation method of the solid electrolyte diaphragm, which comprises the following steps: slurry coating, coating the solid electrolyte slurry as described above onto a porous separator; and (5) drying and rolling, namely drying the porous isolating membrane coated with the solid electrolyte slurry and then rolling.
Optionally, the porous isolating membrane can be but is not limited to PP, PE, PET and composite membranes thereof; the pore size distribution D50 of the porous isolating membrane is 20-80 nm, and can be but is not limited to 26nm, 42nm, 58nm, 71nm and 80 nm.
Alternatively, the coating mode can be, but is not limited to, gravure coating, wire bar coating; the slurry coating comprises single-sided coating and double-sided coating, and the thickness of the coating is 0.2-20 μm, wherein the thickness of the coating can be but is not limited to 0.3 μm, 0.7 μm, 1.3 μm, 3.5 μm, 8 μm, 13 μm and 19 μm.
Further, as shown in fig. 1 and 2, the present invention also provides a solid electrolyte membrane comprising: a porous separator 1 coated on one or both sides with the solid electrolyte slurry 2 as described above; the thickness of the solid electrolyte membrane is 1-50 μm; the porosity of the solid electrolyte membrane is 25-90%.
Alternatively, the thickness of the solid electrolyte separator may be, but not limited to, 1 μm, 5 μm, 8 μm, 12 μm, 18 μm, 30 μm, 45 μm, 50 μm; the porosity of the solid electrolyte membrane may be, but is not limited to, 25%, 32%, 40%, 48%, 55%, 68%, 77%, 85%, 90%.
According to the solid electrolyte diaphragm and the preparation method thereof, the solid electrolyte slurry is coated on one side or two sides of the porous isolating membrane, so that the binding force between the solid electrolyte and the porous isolating membrane is increased under the action of the organic silicon surfactant, and the powder falling phenomenon after the solid electrolyte is coated is avoided; the use of the composite organic solvent ensures that the prepared solid electrolyte diaphragm has lower organic solvent residual rate after being dried, and further improves the safety of the lithium battery prepared by using the diaphragm.
Further, the present invention also provides a lithium battery, including: a diaphragm; the separator is suitably a solid electrolyte separator as described above.
Example 1
(1) Preparation of composite organic solvent
0.5kg of acetone, 1.0kg of NMP and 1.5kg of DMAc are mixed and stirred uniformly to prepare the composite organic solvent.
(2) Preparation of solid electrolyte slurry
3kg of LiTi2(PO4)3Adding the powder, 0.15kg of polydimethylsiloxane and 0.06kg of PVDF into the composite organic solvent, and mechanically stirring for 300min to uniformly disperse the mixture to obtain the solid electrolyte slurry.
(3) Slurry coating
And (3) coating the solid electrolyte slurry prepared in the step (2) on the upper surface and the lower surface of a PE porous isolating membrane with the thickness of 9 mu m in a gravure coating mode, wherein the coating thickness of each surface is 3 mu m.
(4) Drying and winding
And (4) drying the porous isolating membrane in the step (3) and then rolling.
Example 2
(1) Preparation of composite organic solvent
4.0kg of acetone, 8.0kg of NMP and 12.0kg of DMAc are mixed and stirred uniformly to prepare the composite organic solvent.
(2) Preparation of solid electrolyte slurry
3kg of LiCr2(PO4)3Powder, 0.45kg of polydimethylsiloxane, 0.10kg of PVDF andand (3) mixing the organic solvent, mechanically stirring for 300min to uniformly disperse the organic solvent to obtain solid electrolyte slurry.
(3) Slurry coating
And (3) coating the solid electrolyte slurry prepared in the step (2) on the upper surface and the lower surface of the PE porous isolating membrane with the thickness of 0.6 mu m in a gravure coating mode, wherein the coating thickness of each surface is 0.2 mu m.
(4) Drying and winding
And (4) drying the porous isolating membrane in the step (3) and then rolling.
Example 3
(1) Preparation of composite organic solvent
3.0kg of acetone, 6.0kg of NMP and 9.0kg of DMAc are mixed and stirred uniformly to prepare the composite organic solvent.
(2) Preparation of solid electrolyte slurry
30kg of LiZr2(PO4)3Adding the powder, 0.25kg of polydimethylsiloxane and 0.15kg of PVDF into the composite organic solvent, and mechanically stirring for 300min to uniformly disperse the mixture to obtain the solid electrolyte slurry.
(3) Slurry coating
And (3) coating the solid electrolyte slurry prepared in the step (2) on the upper surface and the lower surface of a PE porous isolating membrane with the thickness of 10 micrometers by adopting a gravure coating mode, wherein the coating thickness of each surface is 20 micrometers.
(4) Drying and winding
And (4) drying the porous isolating membrane in the step (3) and then rolling.
Comparative example 1
(1) Preparation of solid electrolyte slurry
3kg of LiTi2(PO4)3The powder, 0.15kg of polydimethylsiloxane and 0.06kg of PVDF are added into 3kg of acetone and mechanically stirred for 300min to be uniformly dispersed, so that solid electrolyte slurry is prepared.
(2) Slurry coating
And (3) coating the solid electrolyte slurry prepared in the step (1) on the upper surface and the lower surface of a PE porous isolating membrane with the thickness of 9 mu m in a gravure coating mode, wherein the coating thickness of each surface is 3 mu m.
(3) Drying and winding
And (3) drying the porous isolating membrane in the step (2) and then rolling.
Comparative example 2
(1) Preparation of solid electrolyte slurry
3kg of LiCr2(PO4)3The powder, 0.45kg of polydimethylsiloxane and 0.10kg of PVDF were added to 3kg of NMP, and the mixture was mechanically stirred for 300min to disperse the mixture uniformly, thereby obtaining a solid electrolyte slurry.
(2) Slurry coating
And (3) coating the solid electrolyte slurry prepared in the step (1) on the upper surface and the lower surface of a PE porous isolating membrane with the thickness of 0.6 mu m in a gravure coating mode, wherein the coating thickness of each surface is 0.2 mu m.
(3) Drying and winding
And (3) drying the porous isolating membrane in the step (2) and then rolling.
Comparative example 3
(1) Preparation of solid electrolyte slurry
30kg of LiZr2(PO4)3The powder, 0.25kg of polydimethylsiloxane and 0.15kg of PVDF were added to 3kg of DMAc, and the mixture was mechanically stirred for 300min to be uniformly dispersed, thereby obtaining a solid electrolyte slurry.
(2) Slurry coating
And (3) coating the solid electrolyte slurry prepared in the step (1) on the upper surface and the lower surface of a PE porous isolating membrane with the thickness of 10 micrometers by adopting a gravure coating mode, wherein the coating thickness of each surface is 20 micrometers.
(3) Drying and winding
And (3) drying the porous isolating membrane in the step (2) and then rolling.
The solid electrolyte separators prepared in examples 1 to 3 and comparative examples 1 to 3 were subjected to the relevant performance tests in this section, and the results are shown in table 1.
Table 1 summary of performance test results for solid electrolyte separators
Wherein the Gurley values in Table 1 are measured as specified in JIS P8117.
It can be seen from the data in table 1 that after the solid electrolyte slurry prepared by using the mixed organic solvent of the present invention is coated on the surface of the porous isolating membrane, the prepared solid electrolyte membrane has good air permeability and low organic solvent residue rate, and the solid electrolyte membrane is used for preparing a lithium battery, thereby improving the safety of the lithium battery.
In conclusion, the composite organic solvent is used as the solvent for preparing the solid electrolyte slurry, so that the problems of difficult dissolution and low volatility in the case of using a single organic solvent are solved, the organic solvent residue after the slurry is coated on the porous isolating membrane is reduced, the addition of water is avoided, and the safety of the lithium battery prepared by using the diaphragm is further improved; the solid electrolyte slurry provided by the invention adopts the organic silicon surfactant, so that the surface of the solid electrolyte is organized, and the dissolving efficiency of the solid electrolyte in the composite organic solvent is improved; meanwhile, the binding force of the solid electrolyte, the porous isolating membrane and the electrode material of the lithium battery is increased; the solid electrolyte slurry is coated on the porous isolating membrane to prepare the lithium battery diaphragm, so that the diaphragm and the high-conductivity solid electrolyte form an integrated membrane, the brittleness problem of the solid electrolyte when used independently is avoided, and the lithium battery is convenient to assemble in the process of preparing the lithium battery; the diaphragm is used for preparing the lithium battery, and due to the strong binding force between the solid electrolyte slurry and the porous isolating membrane, the gap between the solid electrolyte and the porous isolating membrane is reduced, the internal resistance of the lithium battery is reduced, the generation of the heating phenomenon of the lithium battery is reduced, and potential safety hazards such as fire and the like are avoided.
In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, the term "connected" is to be understood broadly, e.g. it may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the apparatus is only a logical division, and other divisions may be realized in practice. In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011140158.0A CN112201851B (en) | 2020-10-22 | 2020-10-22 | Solid electrolyte slurry, preparation method thereof, diaphragm and lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011140158.0A CN112201851B (en) | 2020-10-22 | 2020-10-22 | Solid electrolyte slurry, preparation method thereof, diaphragm and lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112201851A CN112201851A (en) | 2021-01-08 |
| CN112201851B true CN112201851B (en) | 2021-08-10 |
Family
ID=74010833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011140158.0A Active CN112201851B (en) | 2020-10-22 | 2020-10-22 | Solid electrolyte slurry, preparation method thereof, diaphragm and lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112201851B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2024143622A (en) * | 2023-03-30 | 2024-10-11 | 株式会社Ａｅｓｃジャパン | Manufacturing method for all-solid-state batteries |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002543553A (en) * | 1998-12-22 | 2002-12-17 | ファインセル カンパニー リミテッド | Solid electrolyte using absorbent and method for producing the same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100382103B1 (en) * | 1997-03-25 | 2003-07-22 | 주식회사 엘지화학 | Lithium ion polymer battery coated with composite solvent |
| CN101796672A (en) * | 2007-09-04 | 2010-08-04 | 三菱化学株式会社 | Lithium transition metal compound powder |
| CN101393975A (en) * | 2008-10-10 | 2009-03-25 | 深圳市邦凯电子有限公司 | Colloidal state polymer battery and composite diaphragm manufacturing method therefor |
| AU2018219164A1 (en) * | 2017-02-07 | 2019-08-29 | Ford Cheer International Limited | Electrolyte modulator, fabrication methods and applications of same |
| CN110212241A (en) * | 2019-06-12 | 2019-09-06 | 哈尔滨工业大学 | A kind of solid electrolyte membrane and its preparation process and application |
| CN110380114B (en) * | 2019-07-24 | 2021-03-23 | 中国科学院过程工程研究所 | A kind of organic-inorganic composite solid electrolyte and preparation method and application thereof |
-
2020
- 2020-10-22 CN CN202011140158.0A patent/CN112201851B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002543553A (en) * | 1998-12-22 | 2002-12-17 | ファインセル カンパニー リミテッド | Solid electrolyte using absorbent and method for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112201851A (en) | 2021-01-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020000164A1 (en) | Composite lithium battery separator and preparation method therefor | |
| CN103102717B (en) | Water-based ceramic coating for lithium ion battery and application thereof | |
| CN109181522B (en) | Aramid fiber coating liquid, lithium ion battery diaphragm and preparation method thereof | |
| CN110993933A (en) | Positive electrode material for lithium ion battery, preparation method and lithium ion battery | |
| CN105489931A (en) | Application of sulfide electrolyte in preparing all-solid-state battery | |
| CN107492620A (en) | A kind of high-temperature-reslithium lithium battery barrier film and preparation method thereof | |
| CN108878733B (en) | Electrochemical device isolating membrane coating and preparation method and application thereof | |
| CN107528038A (en) | Prepare the mixed slurry of composite diaphragm and the preparation method of composite diaphragm | |
| CN111900315B (en) | Ceramic diaphragm with double-sided coating material coating, preparation method and application thereof | |
| CN108807795A (en) | A kind of electrode-supported anodic aluminium oxide membrane and preparation method thereof | |
| CN113067100A (en) | A kind of water-based PVDF coated lithium ion battery separator and preparation method thereof | |
| CN112201851B (en) | Solid electrolyte slurry, preparation method thereof, diaphragm and lithium battery | |
| CN111613759A (en) | Separator slurry and preparation method thereof, separator and lithium ion battery | |
| CN113363669B (en) | Composite diaphragm, lithium ion battery containing same, preparation method and application thereof | |
| CN107216472A (en) | A kind of high-fire resistance composite diaphragm for lithium battery and preparation method thereof | |
| CN110581267A (en) | A kind of nano-cellulose-silicon-graphite micro-sheet flexible electrode material and its preparation method and application | |
| CN107611341A (en) | A kind of flexible electrical pole piece with coat and preparation method thereof | |
| CN114050376B (en) | Double-layer electrode supported inorganic diaphragm and preparation method thereof | |
| CN109524596A (en) | A kind of diaphragm for lithium ion battery material and preparation method thereof | |
| CN105870489A (en) | Single large-capacity polymer lithium-ion battery manufacturing method and assembling method thereof | |
| CN115863907A (en) | Lithium battery diaphragm and preparation method and application thereof | |
| CN107068948A (en) | Preparation method of ion exchange membrane of lithium ion battery | |
| CN112234250A (en) | Embedded LLZO solid electrolyte diaphragm, slurry, preparation process and lithium battery | |
| CN112909436A (en) | Lithium ion battery composite diaphragm, preparation method thereof and lithium ion battery | |
| WO2025118451A1 (en) | Separator and manufacturing method therefor, and secondary battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No.111 Huaye Road, Jintan District, Changzhou City, Jiangsu Province 213200 Patentee after: Jiangsu Housheng New Energy Technology Co.,Ltd. Country or region after: China Address before: No.111 Huaye Road, Jintan District, Changzhou City, Jiangsu Province 213200 Patentee before: Jiangsu Housheng New Energy Technology Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |