DE2164901A1 - SEPARATORS FOR ALKALINE BATTERIES - Google Patents
SEPARATORS FOR ALKALINE BATTERIESInfo
- Publication number
- DE2164901A1 DE2164901A1 DE2164901A DE2164901A DE2164901A1 DE 2164901 A1 DE2164901 A1 DE 2164901A1 DE 2164901 A DE2164901 A DE 2164901A DE 2164901 A DE2164901 A DE 2164901A DE 2164901 A1 DE2164901 A1 DE 2164901A1
- Authority
- DE
- Germany
- Prior art keywords
- separators
- alkaline batteries
- separator
- polyamide fibers
- fibers
- 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.)
- Granted
Links
Classifications
-
- 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
- H01M50/44—Fibrous material
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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
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
-
- 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
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
- H01M50/423—Polyamide resins
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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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cell Separators (AREA)
Description
Firma CARL FREUDENBERG 22. Dezember 1971CARL FREUDENBERG company December 22, 1971
691Io Weinheim/Bergstr. Dr. Z/Sch ON 6o769 1 Io Weinheim / Bergstr. Dr. Z / Sch ON 6o7
Separatoren für alkalische Batterien Separators for alkaline batteries
Akkumulatoren-Batterien bestehen aus einer Vielzahl von aufeinanderfolgenden Anoden und Katoden. Um eine Berührung zwischen Anode und Katode zu vermeiden, legt man zwischen dieselben sog. Separatoren. Im einfachsten Fall handelt es sich um poröses, keramisches, nicht leitendes Material. Diese dünnen Platten verhindern eine Berührung der Elektroden, lassen jedoch die Ionen in der Elektrolytflüssigkeit zwischen Anode und Katode noch passieren.Accumulator batteries consist of a large number of consecutive Anodes and cathodes. In order to avoid contact between the anode and the cathode, one puts between the same so-called separators. In the simplest case, it is a porous, ceramic, non-conductive material. These thin plates prevent the electrodes from touching, but leave the ions in the electrolyte fluid between them Anode and cathode still pass.
Separatoren verwendet man auch bei der Herstellung von röhrenförmigen Akkumulatoren. In diesem Fall bestehen Anode und Katode aus dünnen, rollfähigen Platten. Zwischen beide legt man wiederum einen Separator, der in diesem Fall natürlich ebenfalls rollfähig sein muß. Nach dem Zusammenrollen steckt man dieses Dreischichtengebilde in ein tubenförmiges Gehäuse, das mit Elektrolytflüssigkeit gefüllt ist. Besondere Schwierigkeiten ergeben sich dann, wenn es sich um alkalische Elektrolytflüssigkeiten handelt. In diesem Fall muß der Separator natürlich gegen die Lauge beständig sein, gleichzeitig aber rollfähig und flexibel, um sich eng an Katode und Anode anlegen zu können. Weiterhin wird verlangt, daß der Separator beständig gegen elektrochemische Oxydation ist und ausreichende Porosität aufweist, um eine ungehinderte Ionenwanderung zwischen den Elektroden zu gewährleisten.Separators are also used in the manufacture of tubular Accumulators. In this case the anode and cathode consist of thin, rollable plates. Lays between the two in turn a separator, which in this case must of course also be rollable. After rolling up stuck this three-layer structure is placed in a tube-shaped housing that is filled with electrolyte fluid. Particular difficulties arise when it comes to alkaline electrolyte liquids. In this case, of course, the separator must be resistant to the lye, but at the same time rollable and flexible, in order to fit closely to the cathode and anode to be able to. It is also required that the separator is resistant to electrochemical oxidation and has sufficient porosity to ensure unhindered migration of ions between the electrodes.
3 09828/05143 09828/0514
Andererseits muß der Separator aber ein Piltriervermögen für die von den Elektroden abgeschiedenen festen Stoffe aufweisen. On the other hand, however, the separator must have a filtering capacity for the solid substances separated by the electrodes.
Gegenstand der Erfindung ist ein solcher flächiger, Alkali-beständiger und flexibler Separator. Er besteht ganz aus Polyamid. Zu seiner Herstellung verwendet man das Polyamid in Form von Pasern, die zunächst in Vliesform auf einer Krempel überführt werden. Nun sind Polyamidfasern im allgemeinen hochschmelzend. Es ist daher nur schwer möglich, Polyamidfasern durch Einwirkung von Hitze und Druck in ein stabiles Flächengebilde zu überführen.The subject of the invention is such a flat, alkali-resistant and flexible separator. It is made entirely of polyamide. For its production one uses the polyamide in the form of Pasern, which is initially transferred to a card in the form of a fleece will. Now, polyamide fibers are generally high-melting. It is therefore difficult to remove polyamide fibers by acting to convert heat and pressure into a stable sheet.
Erfindungsgemäß wird nun den Polyamidfasern ein geringerer Anteil von sog. Bindefasern zugefügt, die ihrerseits ebenfalls zu den Polyamidfasern zu zählen sind. Diese Bindefasern gewinnt man durch Copolymerisation von Caprolactam und AH-SaIz (AH = Adipinsäure-hexamethylen-diamin).According to the invention, a smaller proportion of so-called binding fibers is now added to the polyamide fibers, which in turn are also added are to be counted among the polyamide fibers. These binding fibers are obtained by copolymerizing caprolactam and AH-SaIz (AH = adipic acid-hexamethylene-diamine).
Die Herstellung derartiger Co-Polyamidfasern ist bekannt. Sie sind im Handel außerdem z.B. unter der Bezeichnung N 2ο (Glänzetoff AG, Wuppertal) erhältlich.The production of such copolyamide fibers is known. she are also available in stores e.g. under the name N 2ο (Glänzetoff AG, Wuppertal).
Ein Gemisch ausA mixture of
8o % Polyamidfasern (Type PHRIX), 1,7 den, 4o mm lang und 2o % Co-Polyamidfasern N 2o, 1,6 den, 35 mm lang8o % polyamide fibers (type PHRIX), 1.7 denier, 40 mm long and 2o % co-polyamide fibers N 2o, 1.6 denier, 35 mm long
wird zu einem Vlies von 5o g/m2 auf einer Krempel verarbeitet. Dieses Vlies schickt man dann durch ein Stahlwalzenwerk, das auf 215 0C aufgeheizt ist.is processed into a fleece of 50 g / m 2 on a card. This web is then sent through a steel mill which is heated to 215 0 C.
309828/0514309828/0514
Die obere Walze besteht aus Stahl, während die untere Walze einen Silikontiberzug aufweist. Im Walzenspalt stellt sich ein Druck von 5o atü ein. Das Vlies wird mit einer Geschwindigkeit von 5 m/min durch diesen 215 0C heißen Walzenspalt gefahren. Man erhält sofort das Endprodukt mit einer Dicke von o,ll mm. Dieses Endprodukt stellt bereits den flexiblen, alkalibeständigen Separator dar.The upper roller is made of steel, while the lower roller has a silicone coating. A pressure of 50 atmospheres is established in the nip. The fleece is moved through this roller gap at a temperature of 215 ° C. at a speed of 5 m / min. The end product is obtained immediately with a thickness of 0.1 mm. This end product already represents the flexible, alkali-resistant separator.
309828/05U309828 / 05U
Claims (1)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712164901 DE2164901C3 (en) | 1971-12-28 | Separators for alkaline batteries | |
| AR245644A AR194525A1 (en) | 1971-12-28 | 1972-12-14 | A SEPARATOR FOR ALKALINE ACCUMULATORS |
| ES409655A ES409655A1 (en) | 1971-12-28 | 1972-12-15 | Battery separators |
| AU50184/72A AU470918B2 (en) | 1971-12-28 | 1972-12-15 | Separators for alkali-batteries |
| ZA728922A ZA728922B (en) | 1971-12-28 | 1972-12-18 | Separators for alkaline accumulators |
| JP48004424A JPS4877338A (en) | 1971-12-28 | 1972-12-25 | |
| CA159,993A CA976606A (en) | 1971-12-28 | 1972-12-27 | Separators for alkaline storage batteries |
| GB5983172A GB1421775A (en) | 1971-12-28 | 1972-12-28 | Battery separators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712164901 DE2164901C3 (en) | 1971-12-28 | Separators for alkaline batteries |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2164901A1 true DE2164901A1 (en) | 1973-07-12 |
| DE2164901B2 DE2164901B2 (en) | 1976-06-10 |
| DE2164901C3 DE2164901C3 (en) | 1977-01-27 |
Family
ID=
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2438531A1 (en) * | 1974-08-10 | 1976-02-26 | Freudenberg Carl Fa | SEPARATOR MATERIAL |
| EP0196416A1 (en) * | 1985-03-19 | 1986-10-08 | Firma Carl Freudenberg | Battery separator |
| DE4233412C1 (en) * | 1992-10-05 | 1994-02-17 | Freudenberg Carl Fa | Hydrophilized separator material made of nonwoven fabric for electrochemical energy storage and method for its production |
| EP1349221A2 (en) * | 2002-03-26 | 2003-10-01 | Carl Freudenberg KG | Hydrophylized separator material |
| US7407728B2 (en) | 2001-09-07 | 2008-08-05 | Carl Freudenberg Kg | Alkaline cell or battery |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2438531A1 (en) * | 1974-08-10 | 1976-02-26 | Freudenberg Carl Fa | SEPARATOR MATERIAL |
| EP0196416A1 (en) * | 1985-03-19 | 1986-10-08 | Firma Carl Freudenberg | Battery separator |
| US4699858A (en) * | 1985-03-19 | 1987-10-13 | Firma Carl Freudenberg | Separator for an alkaline battery |
| DE4233412C1 (en) * | 1992-10-05 | 1994-02-17 | Freudenberg Carl Fa | Hydrophilized separator material made of nonwoven fabric for electrochemical energy storage and method for its production |
| US7407728B2 (en) | 2001-09-07 | 2008-08-05 | Carl Freudenberg Kg | Alkaline cell or battery |
| EP1349221A2 (en) * | 2002-03-26 | 2003-10-01 | Carl Freudenberg KG | Hydrophylized separator material |
| EP1349221A3 (en) * | 2002-03-26 | 2006-10-11 | Carl Freudenberg KG | Hydrophylized separator material |
Also Published As
| Publication number | Publication date |
|---|---|
| CA976606A (en) | 1975-10-21 |
| AU5018472A (en) | 1974-06-20 |
| AU470918B2 (en) | 1976-04-01 |
| ZA728922B (en) | 1973-09-26 |
| ES409655A1 (en) | 1976-01-01 |
| DE2164901B2 (en) | 1976-06-10 |
| GB1421775A (en) | 1976-01-21 |
| AR194525A1 (en) | 1973-07-23 |
| JPS4877338A (en) | 1973-10-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| E77 | Valid patent as to the heymanns-index 1977 |