CN106328870A - Porous membrane of electrochemical device - Google Patents
Porous membrane of electrochemical device Download PDFInfo
- Publication number
- CN106328870A CN106328870A CN201510382654.XA CN201510382654A CN106328870A CN 106328870 A CN106328870 A CN 106328870A CN 201510382654 A CN201510382654 A CN 201510382654A CN 106328870 A CN106328870 A CN 106328870A
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- CN
- China
- Prior art keywords
- parts
- ceramic
- porous membrane
- membrane
- improved
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Classifications
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/431—Inorganic material
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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)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cell Separators (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a porous membrane of an electrochemical device. The porous membrane comprises an isolating membrane and a ceramic coating arranged on the isolating membrane, wherein the ceramic coating comprises the following raw materials in parts by weight: 50-60 parts of ceramic particles, 15-25 parts of resin binders, 5-10 parts of foaming agents, 1-5 parts of dispersing agents and 2-8 parts of stabilizers, wherein the ceramic particles include the ceramic particles of three or more particle levels; the ceramic particles are flaky pore ceramic distributed from bottom to top and gradually reduced; and particle layer distribution is driven through foaming agent distribution and foaming migration to achieve a microporous layer to form the porous membrane. According to the porous membrane, the thermal shrinkage resistance is significantly improved, the peel force of a coating reaches 10gkf, the safety performance and the like of a battery core are improved, the retention quantity of an electrolyte is improved and the rate, the life performance and the like of the battery core are improved.
Description
Technical field
The present invention relates to a kind of perforated membrane, specifically a kind of electrochemical appliance perforated membrane.
Background technology
Existing isolating membrane ceramic coating heat resistanceheat resistant shrinkage is poor, and coating skimming resistance is poor, be unfavorable for promote battery core security performance and
Liquid measure protected by electrolyte, and the life-span is low.
Summary of the invention
It is an object of the invention to provide a kind of electrochemical appliance perforated membrane, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme:
A kind of electrochemical appliance perforated membrane, including isolating membrane and the ceramic coating being arranged on isolating membrane, described ceramic coating is pressed
Raw material according to weight portion includes: ceramic particle 50-60 part, resinoid bond 15-25 part, foaming agent 5-10 part, dispersion
Agent 1-5 part, stabilizer 2-8 part, described ceramic particle includes the ceramic particle of more than three kinds or three kinds of particle grades, described
Ceramic particle distribution is the sheetlike pores pottery diminished successively from down to up, is distributed by foaming agent and migration of foaming drives granule
Level distribution realizes micropore level, becomes perforated membrane.
As the further scheme of the present invention: described ceramic coating is distributed lamellar, high porous ceramic bar-shaped, oval, spherical
Granule.
Compared with prior art, the invention has the beneficial effects as follows: heat resistanceheat resistant shrinkage significantly improves, coating skimming resistance reaches
10gkf, promotes battery core security performance etc., improves electrolyte and protects liquid measure, promotes battery core multiplying power and life performance etc..
Accompanying drawing explanation
Fig. 1 is the structural representation of electrochemical appliance perforated membrane.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly and completely
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under not making creative work premise
Execute example, broadly fall into the scope of protection of the invention.
Referring to Fig. 1, in the embodiment of the present invention, a kind of electrochemical appliance perforated membrane, including isolating membrane 2 be arranged on isolation
Ceramic coating 1 on film 2, described ceramic coating 1 includes according to the raw material of weight portion: ceramic particle 50-60 part, resin
Binding agent 15-25 part, foaming agent 5-10 part, dispersant 1-5 part, stabilizer 2-8 part, described ceramic particle includes three
Ceramic particle more than kind or three kinds of particle grades, the distribution of described ceramic particle is from down to up for the sheetlike pores pottery diminished successively
Porcelain, is distributed by foaming agent and migration of foaming drives the distribution of granule level to realize micropore level, becomes perforated membrane, described pottery
Coating 1 is distributed lamellar, high porous ceramic granule bar-shaped, oval, spherical, and described perforated membrane has preferable heat resistanceheat resistant and shrinks
Performance, preferable coating skimming resistance performance, skimming resistance reaches 10gkf, promotes battery core security performance etc., micro-porous flake
Aluminium oxide, foaming agent are brought up coating macrovoid passage from top to bottom and are reached 70%.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and do not carrying on the back
In the case of the spirit or essential attributes of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from
From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim
Change is included in the present invention.Should not be considered as limiting involved claim by any reference in claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only comprises
One independent technical scheme, this narrating mode of description is only the most for clarity sake, and those skilled in the art should be by
Description is as an entirety, and the technical scheme in each embodiment can also be through appropriately combined, and forming those skilled in the art can
With other embodiments understood.
Claims (2)
1. an electrochemical appliance perforated membrane, including isolating membrane (2) and the ceramic coating (1) that is arranged on isolating membrane (2),
It is characterized in that, described ceramic coating (1) includes according to the raw material of weight portion: ceramic particle 50-60 part, resin-bonded
Agent 15-25 part, foaming agent 5-10 part, dispersant 1-5 part, stabilizer 2-8 part, described ceramic particle include three kinds or
Ceramic particles more than three kinds of particle grades, the distribution of described ceramic particle is the sheetlike pores pottery diminished successively from down to up,
It is distributed by foaming agent and migration of foaming drives the distribution of granule level to realize micropore level, become perforated membrane.
Electrochemical appliance perforated membrane the most according to claim 1, it is characterised in that described ceramic coating (1) is distributed
There are lamellar, high porous ceramic granule bar-shaped, oval, spherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510382654.XA CN106328870A (en) | 2015-07-03 | 2015-07-03 | Porous membrane of electrochemical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510382654.XA CN106328870A (en) | 2015-07-03 | 2015-07-03 | Porous membrane of electrochemical device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106328870A true CN106328870A (en) | 2017-01-11 |
Family
ID=57727070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510382654.XA Pending CN106328870A (en) | 2015-07-03 | 2015-07-03 | Porous membrane of electrochemical device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106328870A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904373A (en) * | 2019-03-18 | 2019-06-18 | 江苏塔菲尔新能源科技股份有限公司 | A kind of lithium ion battery, a kind of lithium ion battery isolation film and preparation method thereof |
| CN113394516A (en) * | 2021-05-25 | 2021-09-14 | 惠州锂威电子科技有限公司 | Lithium ion battery diaphragm, preparation method thereof and lithium ion battery |
-
2015
- 2015-07-03 CN CN201510382654.XA patent/CN106328870A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904373A (en) * | 2019-03-18 | 2019-06-18 | 江苏塔菲尔新能源科技股份有限公司 | A kind of lithium ion battery, a kind of lithium ion battery isolation film and preparation method thereof |
| CN109904373B (en) * | 2019-03-18 | 2022-02-15 | 江苏正力新能电池技术有限公司 | Lithium ion battery, lithium ion battery isolating membrane and preparation method thereof |
| CN113394516A (en) * | 2021-05-25 | 2021-09-14 | 惠州锂威电子科技有限公司 | Lithium ion battery diaphragm, preparation method thereof and lithium ion battery |
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| 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170111 |
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| WD01 | Invention patent application deemed withdrawn after publication |