Submission + - Microbial Hydrogen Fuel Cells at Record Efficiency (nsf.gov)
Invisible Pink Unicorn writes: "Researchers at Penn State University have built upon past attempts to generate electricity from microbes, reaching efficiencies of up to 91%. According the lead researcher, 'this process produces 288% more energy in hydrogen than the electrical energy that is added to the process.' In certain configurations, nearly all of the hydrogen contained in the molecules of source material converted to useable hydrogen gas, an efficiency that could eventually open the door to bacterial hydrogen production on a larger scale."