Here’s a nice demonstration of an aluminum-air battery which produces 1.0 V and 100 mA from the oxidation of aluminum foil. Metal-air cells such as this find common application in hearing aid batteries, for instance, which are driven by the oxidation of zinc.
More:
I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and makezine.com. My work has also appeared in ReadyMade, c't – Magazin für Computertechnik, and The Wall Street Journal.
View more articles by Sean Michael Ragan
Related Stories from Make:
