Bipolar ion exchange membranes for batteries and other electrochemical devices

摘要

A bipolar ion exchange membrane suitable for use in ZnBr batteries, LiBr batteries, and electrolyzers. The membrane is produced by hot pressing or extruding a mixture of an anion exchange ionomer powder, a cation exchange ionomer powder, and a non-porous polymer powder.

主权项

1. An electrochemical device comprising: a bipolar non-porous membrane comprising a non-porous polymeric material having a positively charged surface and an opposite negatively charged surface and first and second oppositely charged ion exchange ionomers defining a plurality of oppositely charged ion transport pathways extending through said membrane, substantially all of said ion transport pathways disposed substantially perpendicular to said charged surfaces; wherein one of the first and second oppositely charged ion exchange ionomers is a solid acid powder and the other of the first and second oppositely charged ion exchange ionomers is a solid base powder.