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Pastoese Massen mit anorganischen, fluessigen Leitern und daraus hergestellte Schichten und elektrochemische Bauelemente

Paste material for electrochemical components for batteries, fuel cells, solar cells or sensors comprises mixture of polymer matrix, electrochemically activatable inorganic liquid and optional inert powder
 
: Birke, P.; Neumann, G.

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DE 1998-19848255 A: 19981020
DE 1999-19908532 A1: 20000427
WO 2000024068 A1: 20000427
EP 1135814 A1: 20010926
DE 1999-19964159 A: 19990228
DE 19908532 C2: 20010823
DE 19964159 B4: 20050811
C08L0101
H01M0004
C12N0015
C09D0017
German
Patent, Electronic Publication
Fraunhofer ISIT ()

Abstract
Die vorliegende Erfindung betrifft in elektrochemischen Bauelementen verwendbare, pastoese Massen, umfassend eine heterogene Mischung aus (A) einer mindestens ein organisches Polymer, dessen Vorstufen oder dessen Praepolymere enthaltenden oder hieraus bestehenden Matrix, (B) einer elektrochemisch aktivierbaren, die Matrix nicht oder im wesentlichen nicht loesenden, anorganischen oder im wesentlichen anorganischen Fluessigkeit, und ggf. (C) einem pulverfoermigen Feststoff, der gegenueber der elektrochemisch aktivierbaren Fluessigkeit im wesentlichen inert ist. Weiterhin betrifft sie selbsttragende oder auf einem Substrat aufliegende Schichten, umfassend eine heterogene Mischung aus (A) einer mindestens ein organisches Polymer enthaltenden oder hieraus bestehenden Matrix wie in einem der voranstehenden Ansprueche 1 bis 7 definiert, (B) einer elektrochemisch aktivierbaren, die Matrix nicht oder nicht wesentlich loesenden, anorganischen oder im wesentlichen anorganischen Fluessigkeit, und ggf. (C) einem pulverfoermigen Feststoff, der gegenueber der elektrochemisch aktivierbaren Fluessigkeit im wesentlichen inert ist, sowie Schichtverbuende mit elektrochemischen Eigenschaften, die solche Schichten enthalten. Die Schichten bzw. Schichtverbuende lassen sich vorteilhaft zur Herstellung von Batterien, Niedertemperaturbrennstoffzelle n, Solarzellen oder elektrochemischen Sensoren einsetzen.

 

DE 19908532 A UPAB: 20000613 NOVELTY - Paste material for use in electrochemical components comprises a heterogeneous mixture of (A) a matrix containing organic polymer(s) or their precursor(s) or prepolymer(s), (B) electrochemically activatable, essentially inorganic liquid which is essentially a non-solvent for (A) and optionally (C) a solid powder which is inert towards (B). DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for (a) a self-supporting layer or a layer on a substrate, comprising a heterogeneous mixture of a polymer matrix as in (A), liquid (B) and optionally solid (C); (b) a laminate with electrical properties, comprising (1) a flexible layer containing an organic polymer and a suitable positive electrode material, (2) a layer as in (a), in which the liquid (B) is a substance with electrolyte properties and (3) a flexible layer containing an organic polymer and a negative electrode material; (c) a similar laminate comprising (1) a layer as in (a) in which liquid (B) is a material suitable for use as a cathode or an anode, (2) a flexible layer containing solid electrolytes embedded in an organic polymer matrix and (3) a flexible layer containing liquid or solid electrode material embedded in a polymer matrix, which can act as counter-electrode for layer (1); (d) a process for the production of paste material as above by mixing a crosslinkable prepolymer with components (B) and optionally (C); (e) another process in which (A) is mixed with a plasticizers and optionally powder (C), the plasticizers is leached out with a suitable solvent, the solvent is removed and liquid (B) is then added; (f) a process for the production of layers as in (a) from a paste in which matrix (A) consists of a polymer or prepolymer which is then crosslinked by irradiation (with light or electron beam radiation), heating or immersion in chemical crosslinking agents; (g) another process for the production of layers (a), in which a paste is made from (A), a plasticizer, solvent or swelling agent and optionally (C), the paste is converted into the required layer form, solidified by evaporation of the solvent etc., washed with a solvent to remove the plasticizer and immersed in liquid (B) so as to fill the pores thus formed; (h) a process for the production of laminates as in (b), in which the paste materials for each layer are applied to a substrate, preferably by a compression method, and the layers are then converted into their final compacted state. USE - Laminates based on this material are used in primary, secondary or decomposition batteries, preferably with layer thicknesses of 10 microns to 2 mm; layers based on this material are also used in low temperature fuel cells, solar cells or electrochemical sensors, especially sensors for moisture measurement (claimed). ADVANTAGE - Paste material which already contains conductors (especially electrolytes or at least one electrode) in liquid form, suitable for the production of electrochemically activatable layers in ready-to-use electrochemical components for a wide range of batteries and other products. These components, preferably in the form of film laminates, show very good conductive properties and optionally high flexibility; they cannot run out and therefore eliminate the need for sealed housings.

: http://publica.fraunhofer.de/documents/PX-63505.html