Abstract
Fuel cells with a Pseudomonas methanica suspension at the anode and sterile medium at the cathode developed 0.5–0.6v on open circuit, methane and air being used. Maximum power density was 2.8 µw/cm2 (2.6 mw/ft2) at 0.35v. Hydroxyl ions are the source of oxygen at the anode. The immediate fuel is hydrogen, probably supplied by a flavoprotein. The free energy efficiency of the fuel cell is 14.2% at very low drain and 8.2% at the maximum power point. Its improvement depends on finding energetically more advantageous ways of interfering electrochemically in the natural respiratory sequence. Current density can be improved, possibly by one order of magnitude.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
