Understanding Metal Nanofilms for Sustainable Energy Applications

Project: Research project

Project Details


An emerging class of renewable energy transducers uses graphene-based materials (1,2,3) in contact
with a liquid to convert fluid movement into electrical energy. While achieving up to 30% conversion
efficiencies (4), these transducers are difficult to scale and synthetically complex. Professor Franz
Geiger’s group at Northwestern University discovered comparable energy harvest in nanofilms of
zero-valent iron topped by its thermal oxide (Fe:FeOx). Such films can be deposited onto glass or
polymer substrates in a single step by physical vapor deposition using an inexpensive Fe source.
When exposed to air, a 3-5 nm oxide layer spontaneously forms and self-passivates. Since this FeOx
layer is hypothesized to play a role in current generation, a detailed understanding of its composition
under operating conditions is an important fist step toward elucidating the mechanism of energy
Effective start/end date6/1/195/31/20


  • Sigma Xi (Agmt 6/18/2019)


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