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Elektrochemisch aktivierbare Schicht oder Folie

Layer or film material, which can be activated electrochemically, is formed by impregnating a textile fabric material with a paste mass with a matrix of an organic polymer and an insoluble inorganic material for activation.
 
: Felde, U. zum; Gulde, P.; Neumann, G.

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Frontpage ()

DE 2000-10045561 A: 20000914
DE 2001-10101299 A: 20010112
WO 2001-EP10293 A: 20010906
DE 10101299 A1: 20020404
H01M0004
H01M0010
German
Patent, Electronic Publication
Fraunhofer ISIT ()

Abstract
Die Erfindung betrifft eine elektrochemisch aktivierbare Schicht oder Folie fuer die Verwendung in elektrochemischen Bauelementen, die ein textiles Flaechengebilde und eine zumindetst in den Zwischenraeumen des textilen Flaechengebildes befindliche Masse aus mindestens einer ein organisches Polymer, dessen Vorstufen oder dessen Praepolymere enthaltenden oder hieraus bestehenden Matrix und einem elektrochemisch aktivierbaren, in der Matrix nicht loeslichen, anorganischen Material in Form einer Festsubstanz aufweist, sowie Schichtverbuende und wiederaufladbare elektrochemische Zellen, die unter Verwendung solcher Schichten oder Folien aufgebaut sind. Weiterhin betrifft die Erfindung eine Reihe von Verfahren zur Herstellung der Schichten bzw. Folien.

 

WO 200223662 A UPAB: 20020701 NOVELTY - The layer or film for use in electrochemical components, which can be activated electrochemically, is a textile material with a substance mass embedded into the spaces within the fabric. The mass is of at least one matrix, with or of an organic polymer its precursors or prepolymers, and a solid inorganic material which can be activated electrochemically and which is insoluble in the matrix. DETAILED DESCRIPTION - The layer or film, which can be activated electrochemically, is used as an anode or cathode with a metallized or metal textile fabric. It is used as an electrolyte layer with a textile fabric of an organic or inorganic polymer material, glass or ceramics. The textile material is a flexible woven fabric. The substance contains a plasticizer, with a proportion in the layer or film of not more than 15 vol.% and preferably 0.3 vol.%. The polymer material in the layer or film is not more than 15 vol.% and preferably not more than 6 vol.%. An INDEPENDENT CLAIM is included for the layer or film to be used in a composite layer structure for an electrochemical cell which can be recharged. It is enclosed within a housing as an anode layer, a cathode layer each with metallized fabrics which project through the layers as contact tabs to pass through the housing to the exterior. Preferred Features: The housing is of a metallized plastics film, closed by sealing seams. The contact tabs pass through the sealed seams. A further INDEPENDENT CLAIM is included for a production process, where the woven fabric material is immersed one or more times into the paste mass in a controlled action, so that the spaces in the material are filled with the substance. The fabric can be compressed between press rollers, coated with the matrix substance, for the mass to be forced through the material. Or the matrix mass can be poured over the fabric, and pressed through it. The matrix mass can be formed into a solid layer or film, to be laminated to the textile fabric by pressure and/or heat. The layers or films (1-5) are bonded or laminated together in the required structure and sequence, according to application. USE - The layer or film is for use with a component which can be activated electrochemically e.g. rechargeable accumulators, electrodes and electrolytes. ADVANTAGE - The layer or film is mechanically stable, and can be used repeatedly.

: http://publica.fraunhofer.de/documents/PX-72688.html