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

Aventis R Search & Technology Gmbh & Co. Kg

Annette Fuchs

Joachim Maier

Klaus-Dieter Kreuer

Georg Frank

Joachim Clauss

Thomas Soczka-Guth

Andreas Wohlfarth

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

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

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Weil der Stadt, Germany

Annette Fuchs