Self-Healing Membrane Improves Hydrogen Fuel Cells

Mar-29-17 A self-healing membrane could help extend the life of hydrogen fuel cells.

In hydrogen fuel cells, the anode and cathode are separated by a thin polymer membrane, usually made from Nafion. However, the membrane will wear down over time, forming small holes and cracks that degrade the battery.

The self-healing membrane, from a team at the University of Delaware, is made up of a polymer embedded with capsules of liquid Nafion. When the capsules detect ruptures in the membrane, they will break open to fill the defect, extending the life of the fuel cell.

Image: Liang Wang, associate scientist in UD's Department of Mechanical Engineering, holding the membrane

More Info about this Invention:

[PHYS.ORG]
[UDEL.EDU]

---