Cross-linked anion exchange membrane

Description:

Project ID: D2018-55

Background

Increasing population drives increasing energy demand. Fuel cells and electrochemical devices are under investigation for use as an energy supply. However, the devices may not being reaching their commercialization potential; Proton Exchange Membranes (PEMs) are limited by the use of platinum catalysts, fuel crossover, etc. Anion Exchange Membranes (AEMs) do not require these expensive catalysts and have lower fuel crossover, but lack the conductivity or stability for widespread use. Therefore, a need exists for a more efficient AEM design.

 

Invention Description

Researchers from the University of Toledo have developed a simple, scalable, and functional Anion Exchange Membrane (AEM). It is comprised of Poly (acrylamide-co-diallyldimethylammonium chloride) (PAAcDMAC) cross-linked with glutaraldehyde (GA). Both inputs are available commercially at a relatively low cost.

 

Applications

-       Energy conversion (redox flow batteries, fuel cells)

-       Diffusion dialysis (surface finishing and textile processing)

-       Electrodialysis (desalination, water deionization)

 

Advantages

-       Simple, scalable, and low cost inputs

-       Membrane is flexible and between 15-150 um thick (see photo below)

-       Ion exchange capacity of ~0.5 to 3 mmol/g

 

IP Status:       Patent Pending

 

Patent Information:
Category(s):
Environmental
Materials
For Information, Contact:
Katherine Pollard
Licensing Associate
The University of Toledo
419-530-6228
katherine.pollard@utoledo.edu
Inventors:
Matthew Liberatore
George Ozioko
Karl Schoeps
Keywords:
AEM
Anion exchange membrane
Ion
Liquid separation
Membrane
Polymer