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: US Patent 11,600,837 B2