Max-planck-gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

Aventis R Search & Technology Gmbh & Co. Kg

Klaus-Dieter Kreuer

Joachim Maier

Werner Weppner

Albrecht Rabenau

Michael Schuster

Annette Fuchs

Henrik Thalbitzer Andersen

Georg Frank

Joachim Clauss

Thomas Soczka-Guth

Michael F Bell

Andreas Wohlfarth

Andersen Henrik Thalbitzer

A method of producing an alkaline single ion conductor with high conductivity includes: a) providing a hydrocarbon oligomer or polymer having immobilized acidic substituent groups selected from the group consisting of a sulfonic acid group, sulfamide group, a phosphonic acid group, or a carboxy group, in its alkaline ion form wherein at least a part of the acidic protons of the substituent groups have been exchanged against alkali cations, and b) solvating the hydrocarbon oligomer or polymer of step a) in an aprotic polar solvent for a sufficient time to effect a solvent uptake of at least 5% by weight and to obtain a solvated product, wherein the molar ratio of solvent/alkaline cation is 1:1 to 10,000:1, and which solvated product has a conductivity of at least 10S/cm at room temperature (24&#xb0; C.).

Alkaline single ion conductors with high conductivity and transference number and methods for preparing the same

A copolymer containing, in addition to recurring elements of a sulfonated poly(arylene) containing exclusively recurring structural element(s) of the general formulas &#x2014;[&#x2014;Ar(SOM)-X&#x2014;]&#x2014; and &#x2014;[&#x2014;Ar(SOM)-Y&#x2014;]&#x2014;, wherein X and Y, which are identical or different from each other, each represent an electron-acceptor group, Arand Ar, which are either identical or different from each other, represent an aromatic or heteroaromatic ring system with 5-18 ring atoms; wherein the aromatic or heteroaromatic ring system, in addition to the SOM and the substituents X and Y, optionally comprises additional substituents which are not electron-donor groups; M represents monovalent cation and n is an integral number between 1 and 4; and wherein X, Y, Ar, Ar, M and n can be identical or different in various structural elements, independently of each other, one or several additional elements of at least one additional monomer or macromonomer.

Sulfonated poly(arylenes), polymer compounds and methods of producing the same

Hydrolytically and thermo-oxidatively stable sulfonated polyarylenes include the structural element &#x2014;X&#x2014;Ar(SOM)-Y&#x2014;. The aromatic ring carrying the sulfonic acid group is substituted exclusively by electron-acceptor bridge groups X and Y and, if applicable, by other non-electron-donor substituents. Their synthesis and application are also included.

Sulfonated poly(arylenes) as hydrolytically and thermo-oxidatively stable polymers

Proton conductors comprising from 1 to 99% by weight of an acid and from 99 to 1% by weight of a nonaqueous amphoteric material which are thermally stable from &minus;50&deg; C. to 400&deg; C. and have a proton conductivity of &gE;10,S/cm. The invention further relates to membranes comprising the proton conductors of the invention, processes for preparing the membranes and their use in electrochromic cells, secondary batteries and electrochromic displays.

Proton conductors which are thermally stable over a wide range and have good proton conductivities

A galvanic cell is described, having a metal oxide or metal sulfide electe and a metal electrode, and between them an electrolyte or separator, which is characterized by the fact that it contains as electrolyte a solid proton conductor, namely a zeolite having a proton-containing cation, which has in its crystal lattice passages a phase promoting proton transport.

Galvanic cell comprising solid proton conductor as electrolyte

Solid proton conductors are described, which are based on zeolites having oton-containing cations and having six-member and larger rings as secondary structural groups of the zeolitic structure, and in whose crystal lattice passages a phase is present which promotes proton transport. Their use as separator material and electrolyte for electrochemical cells is also described.

Growing community of inventors

Boeblingen, Germany

Klaus-Dieter Kreuer