CN220604899U - Diaphragm and electric core - Google Patents
Diaphragm and electric core Download PDFInfo
- Publication number
- CN220604899U CN220604899U CN202321741260.5U CN202321741260U CN220604899U CN 220604899 U CN220604899 U CN 220604899U CN 202321741260 U CN202321741260 U CN 202321741260U CN 220604899 U CN220604899 U CN 220604899U
- Authority
- CN
- China
- Prior art keywords
- coating
- region
- diaphragm
- base film
- coating area
- 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
- 238000000576 coating method Methods 0.000 claims abstract description 151
- 239000011248 coating agent Substances 0.000 claims abstract description 148
- 230000001070 adhesive effect Effects 0.000 claims abstract description 16
- 239000000853 adhesive Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 94
- 229910010293 ceramic material Inorganic materials 0.000 claims description 21
- 239000003125 aqueous solvent Substances 0.000 claims description 11
- 239000002904 solvent Substances 0.000 claims description 10
- 239000002033 PVDF binder Substances 0.000 claims description 8
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 7
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 10
- 238000007731 hot pressing Methods 0.000 abstract description 10
- 239000011247 coating layer Substances 0.000 abstract description 8
- 230000035699 permeability Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 7
- 238000010894 electron beam technology Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005211 surface analysis Methods 0.000 description 1
Classifications
-
- 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
- Cell Separators (AREA)
Abstract
The application relates to a diaphragm and a battery cell. The diaphragm comprises a base film and a coating layer arranged on the surface of the base film, wherein the coating layer comprises a first coating area and a second coating area, and the adhesive force of the surface of the second coating area far away from the base film is larger than that of the surface of the first coating area far away from the base film; the second coating region is located at least one side edge region of the base film, and the first coating is located at other regions of the surface of the base film than the second coating region. According to the scheme, the air permeability and the thickness of the two sides of the diaphragm can be guaranteed to be uniformly distributed, so that the bonding effect of the top of the battery cell after formation of hot pressing is improved, the flatness of the battery cell is improved, the interface problem between the electrode plate and the diaphragm is solved, and the electrical property and the circulation stability of the battery cell are improved.
Description
Technical Field
The application relates to the technical field of new energy, in particular to a diaphragm and a battery cell.
Background
In order to improve the safety performance and electrochemical performance of a lithium ion battery, a coating technology is generally used for treating a diaphragm, so that the air permeability and the thickness uniformity of two sides of the diaphragm are ensured, and further the thickness uniformity and the electrical performance stability of the battery are ensured.
In the related art, in the production process of the lithium ion battery with the multi-lug structure, the situation of edge thinning is almost unavoidable when the diaphragm is coated, so that the top area of the winding core is thinner than the middle and bottom areas after the winding core is formed, and the bonding efficiency of the top area is poor; in addition, the separator in the related art is generally coated by a single coating material, and the thickness of the coating layer is uniform, so that the top area of the battery cell is stressed less than the middle and bottom areas after formation and hot pressing, the bonding effect is further deteriorated, and the top interface of the battery cell is deteriorated, and the electrical performance is reduced.
Disclosure of Invention
In order to solve or partially solve the problem existing in the related art, the application provides a diaphragm and an electric core, wherein the air permeability and the thickness on two sides of the diaphragm can be guaranteed to be uniformly distributed, so that the bonding effect of the top of the electric core after formation and hot pressing is improved, the interface problem between an electrode plate and the diaphragm is avoided, and the electric performance and the circulation stability of the electric core are improved.
A separator according to a first aspect of the present application includes:
the coating layer comprises a first coating area and a second coating area, and the adhesive force of the surface of the second coating area far away from the base film is larger than that of the surface of the second coating area far away from the base film;
the second coating region is located at least one side edge region of the base film, and the first coating region is located at other regions of the surface of the base film than the second coating region.
In some embodiments, the second coating region is located at one side edge region of the base film, and the first coating region is located at a middle region and the other side edge region of the base film.
In some embodiments, the bonding material of the first and second coated regions is a first material; the first material of the first coating area adopts an aqueous solvent, and the first material of the second coating area adopts an oil solvent; or alternatively, the first and second heat exchangers may be,
the bonding materials of the first coating area and the second coating area are first materials, and the first coating area and the second coating area both adopt aqueous solvents, wherein the content of the first materials in the second coating area is higher than that of the first coating area.
In some embodiments, the first coated region and the second coated region are a mixed coating of the first material and a ceramic material.
In some embodiments, the bonding material of the first coating region is a first material and the bonding material of the second coating region is a second material having a different property than the first material;
the first material and the second material are both aqueous solvents, and the bonding force of the second material is larger than that of the first material.
In some embodiments, the first coated region is a mixed coating of the first material and a ceramic material;
the second coating zone is a mixed coating of the second material and a ceramic material.
In some embodiments, the ratio of the first material to the ceramic material in the first and second coating zones is from 6:4 to 8:2; and/or the number of the groups of groups,
the first material is PVDF.
In some embodiments, the ratio of the second material to the ceramic material in the second coating zone is 6:4 to 8:2; and/or
The first material is PVDF and the second material is PMMA.
In some embodiments, the width of the first coated region is greater than the width of the second coated region in the width direction of the separator; or, in the width direction of the diaphragm, the width of the first coating area accounts for 70% -95% of the width of the diaphragm, and the width of the second coating area accounts for 5% -30% of the width of the diaphragm.
A second aspect of the present application provides a cell comprising a separator as described in the first aspect, at least the top of the cell in the height direction corresponding to a second coated area of the separator.
The technical scheme that this application provided can include following beneficial effect:
according to the scheme provided by the embodiment of the application, as the adhesive force of the surface of the base film, which is far away from the second coating area, in the diaphragm is larger than that of the surface, which is far away from the first coating area, the second coating area is located at least one side edge area of the base film, and the first coating area is located in other areas, except the second coating area, of the surface of the base film, air permeability and uniform thickness distribution of two sides of the diaphragm are ensured, so that the adhesive effect of the top of the battery cell after formation hot pressing is improved, the flatness of the battery cell is improved, the interface problem between an electrode sheet and the diaphragm is improved, and the electrical performance and the circulation stability of the battery cell are further improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
Fig. 1 is a schematic structural view of a separator according to an embodiment of the present application.
Reference numerals: 100. a diaphragm; 110. a first coating zone; 120. and a second coating zone.
Detailed Description
Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, a first message may also be referred to as a second message, and similarly, a second message may also be referred to as a first message, without departing from the scope of the present application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly, as they may be fixed, removable, or integral, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The separator in the related art is generally coated by a single coating material, and the thickness of the coating layer is uniform, so that the pressure applied to the top area of the battery cell after formation hot pressing is smaller than that applied to the middle and bottom areas, the bonding effect is further deteriorated, the top interface of the battery cell is further deteriorated, and the electrical performance is reduced.
To above-mentioned problem, this application embodiment provides a diaphragm, can guarantee the gas permeability and the thickness homogeneous distribution of diaphragm both sides for formation hot pressing back electric core top bonding effect obtains promoting, has avoided the interface problem between electrode slice and the diaphragm, and the electric performance obtains improving.
The following describes the technical scheme of the embodiments of the present application in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a separator according to an embodiment of the present application.
Referring to fig. 1, the separator provided in the embodiment of the present application includes a base film (not shown) and a coating layer disposed on a surface of the base film, the coating layer includes a first coating region 110 and a second coating region 120, and an adhesive force of a surface of the second coating region 120 remote from the base film is greater than an adhesive force of a surface of the first coating region 110 remote from the base film; the second coating region 120 is located at least one side edge region of the base film, and the first coating 110 is located at other regions of the surface of the base film than the second coating region 120.
According to the diaphragm provided by the embodiment of the application, as the adhesive force of the surface of the base film, which is far away from the second coating area 120, in the diaphragm is greater than that of the surface of the base film, which is far away from the first coating area 110, and the second coating area 120 is located at least one side edge area of the base film, the first coating area 110 is located in other areas, except the second coating area 120, of the surface of the base film, so that the air permeability and the thickness of two sides of the diaphragm 100 are uniformly distributed, the adhesive effect of the top of the battery cell after formation hot pressing is improved, the interface problem between the electrode plate and the diaphragm 100 is avoided, and the electrical property is improved.
In some embodiments, the second coating region 120 is located at a side edge region of the base film, and when the separator is applied to the cell, the second coating region 120 corresponds to a top region of the base film in the height direction of the cell; the first coating region 110 is located at a middle region and the other side region of the base film, and the first coating region 110 corresponds to a middle and bottom region of the base film in the height direction of the battery cell.
In this embodiment, the adhesion force of the surfaces of the first and second coating regions 110 and 120 away from the base film may be the adhesion force between the first and second coating regions 110 and 120 and the pole piece, wherein the adhesion force between the first coating region 110 and the pole piece may be 1-5N/m, and the adhesion force between the second coating region 120 and the pole piece may be 2-10N/m, and it is understood that the values of the adhesion forces of the first and second coating regions 110 and 120 are merely illustrative, and the application is not limited thereto, and the adhesion forces of the first and second coating regions 110 and 120 may be changed when the adhesive content of the first and second coating regions 110 and 120 is changed, but the adhesion force of the surface of the first coating region 110 away from the base film is always greater than the adhesion force of the surface of the second coating region 120 away from the base film.
In the related art, when the separator is coated, the active material layer diffuses to both sides in the height direction of the base film, so that the active material layer at the edge of the base film is thinner. The related art generally cuts the middle of the pole piece along the length direction of the pole piece to obtain two pole pieces, so that the edge of one side (e.g., the top of the cell) of the related art is thin compared with other areas (e.g., the middle and bottom of the cell) in the height direction. In this embodiment, since the second coating region 120 is located at the edge region of at least one side of the base film, the first coating region 110 is located at other regions of the surface of the base film except for the second coating region 120, the second coating region 120 may correspond to the top of the cell, and the first coating region 110 may correspond to the middle and bottom of the cell, so that the bonding effect of the top of the cell after formation and hot pressing is improved.
In some embodiments, the first and second coated regions 110, 120 are mixed coatings of a first material and a ceramic material, and the bonding material of the first and second coated regions 110, 120 is the first material; the first material of the first coating region 110 employs an aqueous solvent, and the first material of the second coating region 120 employs an oil-based solvent.
In this embodiment, deionized water may be used as the aqueous solvent to improve the safety and stability of the battery, but the binding force is lower than that of the oily solvent. The oil solvent may be, for example, DMAC (Dimethylacetamide) having a high adhesion force, but is not limited thereto.
Since the adhesive force of the first material using the oil-based solvent is greater than that of the first material using the water-based solvent, the adhesive force of the second coating region 120 is greater than that of the first coating region 110, and the bonding effect of the top of the battery cell after formation and hot pressing is improved.
The first material of this embodiment may be PVDF (Polyvinylidene Fluoride ) and the ceramic material may be alumina ceramic. The first coating area 110 on the surface of the diaphragm 100 is coated with the aqueous PVDF and alumina ceramic mixed coating, and the second coating area 120 is coated with the aqueous PVDF and alumina ceramic mixed coating, so that the adhesiveness between the diaphragm 100 and the pole piece is achieved, the heat resistance, the oxidation resistance and the electrolyte infiltration performance of the diaphragm 100 are improved, and meanwhile, the top bonding effect of the battery cell is improved. After the first and second coating regions 110 and 120 comprise a mixed coating of ceramic material, the thermal shrinkage of the separator 100 is also improved, and the safety performance of the battery cell is also improved.
In this embodiment, the ratio of the first material to the ceramic material in the first coating region 110 and the second coating region 120 is greater than the ratio of the ceramic material, but is not limited thereto.
In some embodiments, the first coating region 110 and the second coating region 120 are mixed coatings of a first material and a ceramic material, the bonding material of the first coating region 110 and the second coating region 120 is the first material, and the bonding material of the first coating region 110 and the second coating region 120 both adopt an aqueous solvent, wherein the content of the first material in the second coating region 120 is higher than the content of the first material in the first coating region 110. By increasing the content of the first material in the second coating region 120, the adhesion of the surface of the second coating region 120 remote from the base film is increased.
In the present embodiment, the ratio of the first material is greater than the ratio of the ceramic material in the second coating region 120, for example, the ratio of the first material to the ceramic material may be 8:2, but is not limited thereto.
In some embodiments, the bonding material of the first coating region 110 is a first material and the bonding material of the second coating region 120 is a second material having different properties than the first material; the first material and the second material both adopt aqueous solvents, wherein the adhesive force of the second material is larger than that of the first material.
In the solution of this embodiment, since the second material is different from the first material and the adhesive force of the second material is greater than that of the first material, the adhesive force of the surface of the second coating region 120 away from the base film is greater than that of the surface of the first coating region 110 away from the base film.
In this embodiment, the first material may be PVDF and the second material may be PMMA (Polymethyl methacrylimide, polymethyl methacrylate).
In the present embodiment, the content ratio of the first material to the ceramic material in the first coating region 110 and the second coating region 120 may be 6:4, but is not limited thereto.
In some embodiments, the first and second coating regions 110, 120 employ a single first material, i.e., the first and second coating regions 110, 120 do not comprise the ceramic material of the above embodiments.
Wherein the bonding material of the first and second coating regions 110 and 120 is a first material; the first material of the first coating region 110 employs an aqueous solvent, and the first material of the second coating region 120 employs an oil-based solvent.
With continued reference to fig. 1, in any of the above embodiments, in the width (or height) direction of the separator, the width L1 of the first coating region 110 is greater than the width L2 of the second coating region 120, e.g., the width L1 of the first coating region 110 accounts for 70% -95% of the width of the separator 100; the width L2 of the second coating region 120 accounts for 5% to 30% of the width of the separator 100.
In any of the above embodiments, the width of the separator 100 in the width (or height) direction of the separator may be 76.5, the width of the first coating region 110 may be 66.5mm, and the width of the second coating region 120 may be 10mm, but is not limited thereto.
In the cured battery core, materials of a water-based solvent and an oil-based solvent or an adhesive are distinguished by XPS technology, wherein XPS is a surface analysis method with strong practicability for qualitative and quantitative analysis and structure identification of a solid surface, and photoelectrons emitted by an inner shell layer of a detection surface atom are used as probes to acquire abundant physical and chemical information of the surface. The content of the bonding material and the content of the ceramic material can be distinguished by an SEM (scanning electron microscope) technology and an EDS (electron beam discharge) technology, in the SEM technology, electron beams emitted by a cathode are accelerated by an anode, an electron beam with the diameter of tens of angstroms to thousands of angstroms is formed after being accelerated by a magnetic lens, the high-energy electron beams bombard the surface of a sample to excite various information, and corresponding images of various materials can be obtained from a display screen after being respectively collected and amplified. In EDS technology, an incident electron beam can be stopped at any location on the region being observed, X-rays are generated in a volume of 1 micron in diameter, and mass and quantity analysis can be performed on the distribution of elements on the surface of a sample.
As can be seen from the above embodiments, according to the solution provided in this embodiment, different coating materials are coated on different areas of the base film, so that the adhesive layer adhesion force corresponding to the top area of the cell is stronger, and although the top area of the cell is thinner than the middle and bottom areas, the top adhesion effect is improved after formation and hot pressing, the interface problem between the electrode sheet and the separator is improved, and the electrical performance of the cell is improved.
The separator 100 provided in the present application is described above, and accordingly, the present application also provides a battery cell including the separator 100 of any of the above embodiments, at least the top of the battery cell in the height direction corresponding to the second coating region 120 of the separator. The features of the diaphragm are described in the above embodiments and will not be described in detail here.
According to the battery cell provided by the embodiment, due to the adoption of the diaphragm in the embodiment, the defects that the top area of the battery cell is stressed less than the middle and bottom areas after formation due to the fact that the existing diaphragm coating layer is single in material and uniform in thickness and the bonding effect is poor are overcome, the interface problem between the electrode plate and the diaphragm is solved, and the electrical performance of the battery cell is improved.
The embodiments of the present application have been described above, the foregoing description is exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A diaphragm, characterized in that:
the adhesive force of the surface of the second coating area far away from the base film is larger than that of the surface of the first coating area far away from the base film;
the second coating region is located at least one side edge region of the base film, and the first coating region is located at other regions of the surface of the base film than the second coating region.
2. A diaphragm according to claim 1, characterized in that: the second coating region is located at one side edge region of the base film, and the first coating region is located at a middle region and the other side edge region of the base film.
3. A diaphragm according to claim 1, characterized in that:
the bonding materials of the first coating area and the second coating area are first materials; the first material in the first coating zone adopts an aqueous solvent, and the first material in the second coating zone adopts an oil solvent; or alternatively, the first and second heat exchangers may be,
the bonding materials of the first coating area and the second coating area are all first materials, and the first coating area and the second coating area are both aqueous solvents, wherein the content of the first materials in the second coating area is higher than that of the first coating area.
4. A diaphragm according to claim 3, characterized in that:
the first coating region and the second coating region are mixed coatings of the first material and the ceramic material.
5. A diaphragm according to claim 1, characterized in that:
the bonding material of the first coating area is a first material, and the bonding material of the second coating area is a second material with different properties from the first material;
the first material and the second material are both aqueous solvents, and the bonding force of the second material is larger than that of the first material.
6. A diaphragm according to claim 5, characterized in that:
the first coating area is a mixed coating of the first material and a ceramic material;
the second coating zone is a mixed coating of the second material and the ceramic material.
7. A diaphragm according to claim 4, characterized in that:
the content ratio of the first material to the ceramic material in the first coating area and the second coating area is 6:4-8:2; and/or the number of the groups of groups,
the first material is PVDF.
8. A diaphragm according to claim 6, characterized in that:
the content ratio of the second material to the ceramic material in the second coating zone is 6:4-8:2; and/or the number of the groups of groups,
the first material is PVDF and the second material is PMMA.
9. A diaphragm according to claim 1, characterized in that:
the width of the first coating region is greater than the width of the second coating region in the width direction of the separator; or alternatively, the first and second heat exchangers may be,
in the width direction of the diaphragm, the width of the first coating area accounts for 70% -95% of the width of the diaphragm, and the width of the second coating area accounts for 5% -30% of the width of the diaphragm.
10. The utility model provides an electric core which characterized in that: comprising a separator according to any one of claims 1-9, at least the top of the cell in the height direction corresponding to the second coated area of the separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321741260.5U CN220604899U (en) | 2023-07-04 | 2023-07-04 | Diaphragm and electric core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321741260.5U CN220604899U (en) | 2023-07-04 | 2023-07-04 | Diaphragm and electric core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220604899U true CN220604899U (en) | 2024-03-15 |
Family
ID=90173534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321741260.5U Active CN220604899U (en) | 2023-07-04 | 2023-07-04 | Diaphragm and electric core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220604899U (en) |
-
2023
- 2023-07-04 CN CN202321741260.5U patent/CN220604899U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4773588B1 (en) | Fuel cell | |
| CN107017383B (en) | A kind of three-dimensional porous aluminium foil processing method applied to battery, energy-storage battery plus plate current-collecting body | |
| CN111721792B (en) | Preparation method of thin film material section scanning electron microscope sample | |
| JP2012023018A (en) | Fuel battery call | |
| JP2000164225A (en) | Separator of solid polymer electrolyte fuel cell and its manufacture | |
| JP2001351642A (en) | Separator for fuel cell | |
| US10505198B2 (en) | Method for manufacturing fuel electrode support for solid oxide fuel cell and fuel electrode support for solid oxide fuel cell | |
| KR100536255B1 (en) | Reformer for fuel cell system, preparation method thereof, and fuel cell system comprising the same | |
| JP2000285934A (en) | Fuel cell, its manufacture, and its inspecting method | |
| CN220604899U (en) | Diaphragm and electric core | |
| JPWO2015194356A1 (en) | Titanium material for separator of polymer electrolyte fuel cell, separator using the same, and polymer electrolyte fuel cell provided with the same | |
| Wang et al. | Surface‐engineered Nafion/CNTs nanocomposite membrane with improved voltage efficiency for vanadium redox flow battery | |
| KR101022153B1 (en) | Separator for fuel cell and method for fabricating the same | |
| KR101215418B1 (en) | Method of unit cell for solid oxide fuel cell | |
| CN101901881A (en) | The fuel cell of the shell that fuel cell is used and this shell of use | |
| US20100273094A1 (en) | Method of coating a surface of a fuel cell plate | |
| JP6982582B2 (en) | Electrochemical reaction cell stack | |
| US11069905B2 (en) | Fuel cell separator | |
| US9853302B2 (en) | Electrochemical cell | |
| JP2005149796A (en) | Solid polymer electrolyte film, and solid polymer fuel cell | |
| JP2017017026A (en) | Titanium material for separator for solid polymer fuel battery, and separator employing the same | |
| JP7152142B2 (en) | Electrochemical reaction single cell and electrochemical reaction cell stack | |
| JP7035665B2 (en) | Separator, cell, and fuel cell | |
| JP2012004048A (en) | Electrolyte membrane and method for manufacturing the same, electrode catalyst layer and method for manufacturing the same, membrane electrode assembly, and solid polymer electrolyte fuel cell | |
| JP2007265845A (en) | Separator for molten carbonate fuel cell and its manufacturing method, and molten carbonate fuel cell using the separator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |