CN109935893A - Solid electrolyte membrane - Google Patents
Solid electrolyte membrane Download PDFInfo
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- CN109935893A CN109935893A CN201811344405.1A CN201811344405A CN109935893A CN 109935893 A CN109935893 A CN 109935893A CN 201811344405 A CN201811344405 A CN 201811344405A CN 109935893 A CN109935893 A CN 109935893A
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- woven fabrics
- solid electrolyte
- solid
- electrolyte membrane
- polyelectrolyte
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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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Abstract
The invention discloses a kind of solid electrolyte membranes, it is combined by band-like non-woven fabrics and solid polyelectrolyte.The nonwoven surface coated polymer solid electrolyte.Technological core of the invention is the correct skeleton for selecting non-woven fabrics as solid polyelectrolyte, makes full use of non-woven fabrics fiber tissue to make up the solid polyelectrolyte intensity deficiency problem of matching, while improving its thermal stability.Along with the solid polyelectrolyte coated on non-woven fabrics is easy to be filled into the hole of non-woven fabrics, it is thus eliminated that the gap of solid electrolyte membrane, to significantly improve the ionic conductivity of solid electrolyte membrane.The non-woven fabrics that the present invention applies is band-type product, and rolled form is easy to implement roll-to-roll production model, this mode greatly improves production efficiency, reduces production cost.
Description
Technical field
The invention belongs to electrochemical cell art fields, in particular it relates to a kind of dielectric film, especially one
Kind solid electrolyte membrane.
Background technique
With progress of the epoch, traditional liquid state battery, colloidal state class battery be because energy density and safety are relatively poor,
Have been unable to meet the mating requirement of special equipment of some industries.Solid state battery belongs to a kind of novel battery, it has peace well
Full property and high-energy density, the theoretically matching equipment of the entirely appropriate all industries of solid state battery.Since solid state battery is existing
In development phase, technical solution is incomplete, and industry needs continue to explore and study.Currently, restricting solid state battery development
Factor mainly have two aspect.It first has to solve the problems, such as solid solid interface, because solid solid interface is without wetability, solid electrolyte and electrode
It is difficult to come into full contact between interface, this state restricts the counterdiffusion of component phase and reaction efficiency naturally, and is also easy to produce space charge
Phenomena such as layer, causing the internal resistance of cell to sharply increase makes cycle performance be deteriorated.Another problem to be solved is solid state electrolysis used
The ionic conductivity of matter is totally relatively low, causes manufactured solid state battery high rate performance that expection is not achieved.In view of the above-mentioned problems, close several
The industry has done multinomial effective research in this regard over year, emphasis solve the consistency of solid electrolyte, surface smoothness and
The problems such as mechanical strength is poor.Chinese invention patent notification number CN106654362A discloses a kind of composite solid electrolyte film system
Preparation Method and lithium ion battery, the core content of the technical solution are to coat compound adhesive in porous two plane of backing material
Layer, the glue-line is electrolyte layer.The developmental achievement preferably resolves the flexibility and mechanical strength of solid electrolyte membrane.But
It is that the electrolyte in the technical solution cannot be completely into the hole of porous support materials, and gap can still hinder lithium ion to pass
It is defeated.In addition, surface will form sunken inside after partial electrolyte enters the hole of porous support materials, it is made after battery and electrode
There are still gaps on interface, can equally reduce solid solid interface contact quality.
Summary of the invention
Present invention is generally directed to the deficiencies in the prior art, propose that a kind of technique is advanced, structurally reasonable, mechanical property is good, group
Knit that fine and close, interface planarization is good and solid electrolyte membrane convenient for producing in batches.
The present invention is achieved through the following technical solutions technical goal.
Solid electrolyte membrane, it is combined by band-like non-woven fabrics and solid polyelectrolyte；The nonwoven surface
Coated polymer solid electrolyte.
As the scheme of further improvement, the non-woven fabrics material is PP or PET or P1, with a thickness of 15~100 microns, hole
Gap rate 60~80%, 70~500 microns of effective aperture.
As the scheme of further improvement, the solid electrolyte is made of polymer and the mixing of inorganic oxide electrolyte.
As the scheme of further improvement, the solid polyelectrolyte is by polyethylene glycol oxide and inorganic oxide electrolyte
Mixing composition.
Compared with prior art, the present invention having the positive effect that:
1, skeleton of the non-woven fabrics as solid electrolyte is selected, makes full use of non-woven fabrics fiber tissue to make up the polymer of matching
Solid electrolyte intensity deficiency problem, while improving its thermal stability.
2, the solid polyelectrolyte coated on non-woven fabrics is easy to be filled into the hole of non-woven fabrics, it is thus eliminated that solid
Gap inside state dielectric film, to significantly improve the ionic conductivity of solid electrolyte membrane.
3, solid electrolyte membrane being produced by skeleton of band-like non-woven fabrics, rolled form is easy to implement roll-to-roll production model,
Advantageously reduce production cost.
Specific embodiment
The present invention is further illustrated below by embodiment.
Solid electrolyte membrane of the present invention is combined by band-like non-woven fabrics and solid polyelectrolyte.This is compound
Structure is formed using non-woven fabrics as skeleton in nonwoven surface coated polymer solid electrolyte.The polymer solid electrolysis
Matter is made of polymer and the mixing of inorganic oxide electrolyte.In the present embodiment solid polyelectrolyte by polyethylene glycol oxide and
Inorganic oxide electrolyte mixing composition.The non-woven fabrics design parameter that each embodiment is selected is detailed in following table.
Embodiment non-woven fabrics allocation list
After taking the assembly finished battery of solid electrolyte membrane made of the various embodiments described above, reach expected through performance detection proof
Technical effect, especially embodiment 2 and 3 comprehensive performance of example are more excellent.Technological core of the invention is that correct selection non-woven fabrics is poly-
The skeleton for closing object solid electrolyte, makes full use of non-woven fabrics fiber tissue to make up the solid polyelectrolyte intensity of matching not
Sufficient problem, while improving its thermal stability.Along with the solid polyelectrolyte coated on non-woven fabrics is easy to be filled into nothing
In the hole of woven fabric, it is thus eliminated that the gap of solid electrolyte membrane, to significantly improve the ion-conductance of solid electrolyte membrane
Conductance.The non-woven fabrics that the present invention applies is band-type product, and rolled form is easy to implement roll-to-roll production model, this mode mentions significantly
High efficiency reduces production cost.
Claims (4)
1. a kind of solid electrolyte membrane, it is characterised in that: it is combined by band-like non-woven fabrics and solid polyelectrolyte；Institute
State nonwoven surface coated polymer solid electrolyte.
2. solid electrolyte membrane according to claim 1, it is characterised in that: the non-woven fabrics material is PP or PET or P1,
It is with a thickness of 15~100 microns, porosity 60~80%, and 70~500 microns of effective aperture.
3. solid electrolyte membrane according to claim 1, it is characterised in that: the solid electrolyte is by polymer and inorganic
Oxide electrolyte mixing composition.
4. solid electrolyte membrane according to claim 1 or 3, it is characterised in that: the solid polyelectrolyte is by gathering
Ethylene oxide and inorganic oxide electrolyte mixing composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811344405.1A CN109935893A (en) | 2018-11-13 | 2018-11-13 | Solid electrolyte membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811344405.1A CN109935893A (en) | 2018-11-13 | 2018-11-13 | Solid electrolyte membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109935893A true CN109935893A (en) | 2019-06-25 |
Family
ID=66984622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811344405.1A Pending CN109935893A (en) | 2018-11-13 | 2018-11-13 | Solid electrolyte membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109935893A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463480A (en) * | 2020-03-20 | 2020-07-28 | 东华大学 | Filter membrane based high-performance composite solid electrolyte film and preparation method and application thereof |
-
2018
- 2018-11-13 CN CN201811344405.1A patent/CN109935893A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463480A (en) * | 2020-03-20 | 2020-07-28 | 东华大学 | Filter membrane based high-performance composite solid electrolyte film and preparation method and application thereof |
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