DE2250187A1 - LEAD ACCUMULATOR WITH BIPOLAR ELECTRODES - Google Patents
LEAD ACCUMULATOR WITH BIPOLAR ELECTRODESInfo
- Publication number
- DE2250187A1 DE2250187A1 DE2250187A DE2250187A DE2250187A1 DE 2250187 A1 DE2250187 A1 DE 2250187A1 DE 2250187 A DE2250187 A DE 2250187A DE 2250187 A DE2250187 A DE 2250187A DE 2250187 A1 DE2250187 A1 DE 2250187A1
- Authority
- DE
- Germany
- Prior art keywords
- lead
- conductive layer
- lead accumulator
- binder
- layer film
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
-
- 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
- H01M10/06—Lead-acid accumulators
- H01M10/18—Lead-acid accumulators with bipolar electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/14—Electrodes for lead-acid accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/668—Composites of electroconductive material and synthetic resins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/42—Grouping of primary cells into batteries
- H01M6/46—Grouping of primary cells into batteries of flat cells
- H01M6/48—Grouping of primary cells into batteries of flat cells with bipolar electrodes
-
- 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)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
Reg.-Nr. 6FP 209-DiP 6233 Kelkheim, den 9.10.1972Registration number. 6FP 209-DiP 6233 Kelkheim, October 9th, 1972
SeSe
VAETA AKTIENGESEIiISCHAPr1 6 Prankfurt/MainVAETA AKTIENGESEIiISCHAPr 1 6 Prankfurt / Main
Bleiakkumulator mit bipolaren ElektrodenLead accumulator with bipolar electrodes
Die Erfindung betrifft einen Bleiakkumulator mit bipolaren Elektroden.The invention relates to a lead accumulator with bipolar electrodes.
leitsehichtfolien sind mehr oder weniger biegsame Schichten unterschiedlicher Stärke mit relativ guter Elektrodenleitfähigkeit, in der Batterietechnik werden solche Folien insbesondere bei der Fabrikation von mehrzelligen TrodEöbatterien mit bipolarem Aufbau als leitfähige Trennschicht verwendet. Die hierbei verwendete Folie besteht hauptsächlich aus GrapHt und einem organischen Bindemittel, z.B. Polyisobutylen. Batterien mit bipolarem Aufbau zeichnen sich durch einfachen, gewichts- und raumsparenden Aufbau aus und sind hochbelastbar. Die bisher bekannten Trennschichten sind jedoch nicht für Bleiakkumulatoren mit bipolaren Elektroden geeignet, da eine elektrochemische Oxidation des Graphits während der Ladung auftritt. Conductive layers are more or less flexible layers of different types Strength with relatively good electrode conductivity, in In battery technology, such foils are used in particular in the manufacture of multi-cell TrodE batteries with a bipolar structure used as a conductive separating layer. The film used here consists mainly of graph and an organic binder, e.g., polyisobutylene. Batteries with a bipolar structure are characterized by their simple, weight and space-saving structure and are highly resilient. However, the previously known separating layers are not suitable for lead-acid batteries with bipolar electrodes because electrochemical oxidation of the graphite occurs during charging.
Es sind bereits bipolare Bleibatterien bekannt, bei denen die Trennwand aus metallischem Bleiblech besteht. Diese Zellen sind zwar sehr hoch belastbar, erreichen aber keine hohe gewichtsspezifische Energiedichte, da das Bleiblech auf die Dauer ebenfalls nicht oxidationsbeständig ist und daher relativ dick gehalten werden muß, um schnellen Lochfraß und damit innere Kurzschlüsse zu vermeiden.There are already bipolar lead batteries known in which the partition consists of metallic lead sheet. Although these cells are very resilient, they do not achieve a high level of weight-specificity Energy density, since the lead sheet is also not resistant to oxidation in the long term and must therefore be kept relatively thick, to avoid rapid pitting and thus internal short circuits.
409817/0523 - 2 -409817/0523 - 2 -
Aufgabe der Erfindung ist es, einen Bleiakkumulator nit bipolaren Elektroden zu entwickeln, der eine oxidationsbeständige Trennschicht besitzt, und dessen innnerer Widerstand so klein gehalten werden kann, daß ausreichend hohe Stromdichten gewährleistet sind.The object of the invention is to provide a bipolar lead-acid battery To develop electrodes which have an oxidation-resistant separating layer and whose internal resistance is kept so low it can be ensured that sufficiently high current densities are guaranteed.
Biese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß die Trennschicht aus Leitschichtfolien besteht und daß die der positiven Elektrodenmasse gegenüberliegende folie «1s Leitmaterial Blei-IV-Oxid besitzt.This object is achieved according to the invention in that the The separating layer consists of conductive layer foils and that the foil opposite the positive electrode mass is conductive material Possess lead IV oxide.
Anhand der Figuren 1 und 2 wird im folgenden der erfindungsgemäße bipolare Bleiakkumulator näher erläutert. s, The bipolar lead accumulator according to the invention is explained in more detail below with reference to FIGS. 1 and 2. s ,
figur 1 zeit den Aufbau einer erfindungsgemäßen bipolaren Bleiakkumulatorzelle. FIG. 1 shows the structure of a bipolar lead accumulator cell according to the invention.
Die erfindungsgemäße Trennschicht 1 besteht aus einer herkömmlichen, der negativen Elektrodenmasse 3 zugewandten Leitschichtfolie 11, beispielsweise mit Graphit als Leitmaterial und Polyisobutylen als Bindemittel, sowie aus der der positiven Elektrodenmasse 2 zugewandten Folie 12 mit PbOp als Leitmaterial. Als Bindemittel kommt beispielsweise Polytetrafluoräthylen in Frage. Als Bindemittelzusatz kommen 3 bis 30 Gew.$ in Frage, einen besonders niedrigen . elektrischen Widerstand der erfindungsgemäßen Trennschicht bei gleichzeitiger guter mechanischer Festigkeit ergibt ein 10 Gew,#iger Zusatz. Es ist jedoch möglich, die erfindungsgemäße Leitschichtfolie ohne oder mit einem sehr geringen Bindemittelzusatz herzustellen, als oberste Grenze ist ein Zusatz von 50 Gew.# anzusehen. The separating layer 1 according to the invention consists of a conventional, the negative electrode mass 3 facing conductive layer film 11, for example with graphite as the conductive material and polyisobutylene as Binder, as well as from the film 12 facing the positive electrode compound 2 with PbOp as the conductive material. Comes as a binder for example polytetrafluoroethylene in question. As a binder additive 3 to 30 wt. $ are possible, a particularly low one. electrical resistance of the separating layer according to the invention at the same time good mechanical strength results in a 10 wt Additive. However, it is possible to produce the conductive layer film according to the invention with no or very little addition of binder; the upper limit is an addition of 50% by weight.
Die Trennschicht 1 ist in dem Gehäuse 4 flüssigkeitsdicht angebracht,The separating layer 1 is attached in a liquid-tight manner in the housing 4,
Hehrere solcher Bleiakkumulator-Zellen können entsprechend Figur 2 zu einem erfindungsgemäßen Bleiakkumulator zusammengebaut werden. In Figur 2 bezieht sich die Bezugsziffer 5 auf den flüssigen oderSeveral such lead-acid battery cells can be used in accordance with FIG. 2 be assembled into a lead accumulator according to the invention. In Figure 2, reference number 5 refers to the liquid or
409817/0523409817/0523
festgelegten Elektrolyten und etwaige Scheider, mit 6 sind als Überdruckventil arbeitende Gummikappen und mit 7 das Gehäuse bezeichnet.Fixed electrolytes and any separators, with 6 rubber caps working as a pressure relief valve and with 7 the housing designated.
Zur Herstellung eines erfindungsgemäßen Bleiakkumulators wird pulverförmiges Blei-IV-Oxid mit einer Polytetrafluoräthylen-Emulsion zu einem homogenen Brei vermischt und anschließend bei erhöhter Temperatur getrocknet. Anschließend wird die getrocknete Substanz zu einer Folie ausgewalzt und diese Leitschichtfolie wird dann mit einer herkömmlichen Folie 11 zu der erfindungsgemäßen !Trennschicht 1 ausgewalzt. Unter bestimmten Bedingungen kann die Leitschichtfolie 12 auch allein als Trennschicht verwendet werden, besonders vorteilhaft ist es, im Hinblick auf mechanische Festigkeit und Dichtigkeit, zwei oder mehrere gleiche Leitschichtfolien 12 zu einer Trennschicht 1 auszuwalzen. Die Korngröße des PbOg-Pulvers sowie gegebenenfalls des Binders spielt keine große Rolle. Das Polytetrafluoräthylenpulver kann ' dem PbOp-Pulver auch trocken zugemischt werden. Nachdem die aktiven Massen 2,3 beidseitig der Trennschicht 1 aufgebracht sind, wird diese Anordnung in ein Akkumulatorgehäuse 7 eingebracht, wobei die Trennschicht 1 gegen das Gehäuse flüssigkeitsdicht angebracht wird.To produce a lead accumulator according to the invention, powdered lead IV oxide is mixed with a polytetrafluoroethylene emulsion mixed to a homogeneous paste and then dried at elevated temperature. Then the dried The substance is rolled out to form a foil and this conductive layer foil is then combined with a conventional foil 11 to form the foil according to the invention ! Separating layer 1 rolled out. Under certain conditions, the conductive layer film 12 can also be used alone as a separating layer; it is particularly advantageous with regard to this For mechanical strength and tightness, two or more identical conductive layer foils 12 are rolled out to form a separating layer 1. The grain size of the PbOg powder and, if applicable, of the binder doesn't matter much. The polytetrafluoroethylene powder can ' can also be mixed dry with the PbOp powder. after the active masses 2, 3 are applied on both sides of the separating layer 1, this arrangement is introduced into a battery housing 7, wherein the separating layer 1 is attached to the housing in a liquid-tight manner.
Der wesentliche Vorteil einer solchen Leitschichtfolie besteht in ihrer hohen Oxidationsfestigkeit, die nicht mehr durch das Leitmaterial (PbOp) sondern durch das Bindemittel bestimmt wird. Nimmt man als Bindemittel etwa Polytetrafluoräthylen, so ist eine elektrochemische Oxidation der Folie, zumindest durch Sauerstoff, nicht mehr möglich. Um eine Reduktion des PbOp auf der der negativen Elektrodenmasse zugewandten Seite zu verhindern, bringt man auf diese Seite eine zweite nicht reduzierbare Schicht einer herkömmlichen Leitschichtfolie auf. Unter bestimmten Bedingungen kann jedoch auf eine solche herkömmliche Leitschichtfolie verzichtet werden Aufgrund ihrer hohen Oxidationsbeständigkeit kann die erfindungs-· gemäße Trennschicht ausreichend dünn gemacht werden, beispiels-The main advantage of such a conductive layer film is its high resistance to oxidation, which is no longer determined by the conductive material (PbOp) but by the binding agent. If, for example, polytetrafluoroethylene is used as the binding agent, electrochemical oxidation of the foil, at least by means of oxygen, is no longer possible. In order to prevent a reduction of the PbOp on the side facing the negative electrode mass, a second, non-reducible layer of a conventional conductive layer film is applied to this side. Under certain conditions, however, such a conventional conductive layer film can be dispensed with. Due to its high resistance to oxidation, the separating layer according to the invention can be made sufficiently thin, for example
409817/05 23 - 4 -409817/05 23 - 4 -
weise unter 1 mm, so daß ausreichend hohe Stromdichten gewährleistet sind.wise under 1 mm, so that sufficiently high current densities are guaranteed are.
- Patentansprüche -- patent claims -
409817/0523409817/0523
Claims (6)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2250187A DE2250187A1 (en) | 1972-10-13 | 1972-10-13 | LEAD ACCUMULATOR WITH BIPOLAR ELECTRODES |
FR7334820A FR2203178A1 (en) | 1972-10-13 | 1973-09-28 | Bipolar lead-acid accumulator electrode - using separator with twin conduc-tive foils at least one of which has lead-oxide as conductor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2250187A DE2250187A1 (en) | 1972-10-13 | 1972-10-13 | LEAD ACCUMULATOR WITH BIPOLAR ELECTRODES |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2250187A1 true DE2250187A1 (en) | 1974-04-25 |
Family
ID=5858909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2250187A Pending DE2250187A1 (en) | 1972-10-13 | 1972-10-13 | LEAD ACCUMULATOR WITH BIPOLAR ELECTRODES |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2250187A1 (en) |
FR (1) | FR2203178A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1985005738A1 (en) * | 1984-06-04 | 1985-12-19 | Lipovetz Ivan | Lead battery |
EP0176247A1 (en) * | 1984-08-27 | 1986-04-02 | Engelhard Corporation | Corrosion protected, multi-layer fuel cell interface |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE8005528L (en) * | 1980-08-01 | 1982-02-05 | Erik G Sundberg | ELECTRICAL BLYACK CUMULATOR WITH THIN ELECTRODES |
US4510219A (en) * | 1983-11-14 | 1985-04-09 | California Institute Of Technology | Battery plate containing filler with conductive coating |
US4547443A (en) * | 1983-11-14 | 1985-10-15 | Atlantic-Richfield Company | Unitary plate electrode |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB799308A (en) * | 1955-11-28 | 1958-08-06 | Electr & Allied Ind Res Ass | Improvements relating to electric secondary batteries |
GB1092271A (en) * | 1963-05-22 | 1967-11-22 | Eisler Paul | Improvements relating to electrode structures for electrochemical systems |
-
1972
- 1972-10-13 DE DE2250187A patent/DE2250187A1/en active Pending
-
1973
- 1973-09-28 FR FR7334820A patent/FR2203178A1/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1985005738A1 (en) * | 1984-06-04 | 1985-12-19 | Lipovetz Ivan | Lead battery |
EP0176247A1 (en) * | 1984-08-27 | 1986-04-02 | Engelhard Corporation | Corrosion protected, multi-layer fuel cell interface |
Also Published As
Publication number | Publication date |
---|---|
FR2203178A1 (en) | 1974-05-10 |
FR2203178B1 (en) | 1979-01-26 |
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