Spit-Powered Generator

Apr-07-14 Researchers have developed a tiny, saliva-powered generator able to produce enough energy to power basic, on-chip applications.

The generator, created by a team from Penn State University, takes advantage of the plethora of organic material in human saliva. The fuel cell is made up of a single chamber that contains a graphene-coated cloth anode and an air cathode (previous fuel cells have been double-chambered with platinum-coated anodes). Air cathodes have not been used previously in fuel cells because the oxygen will interfere with the bacteria's ability to produce electricity. However, the tiny generator's micro cells at micron distances allowed for the use of air cathodes, though the team is not completely sure why.

The tiny generator could have application in glucose or ovulation monitoring, and it can be fueled by any organic liquid.

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[DVICE.COM]
[PENN STATE]

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