Sweet Solution to Mobile Power

  • Author: David Bradley
  • Published: 04 March 2011
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: Energy & Environmental Science/RSC
thumbnail image: Sweet Solution to Mobile Power

Chinese researchers have developed a small biofuel cell that can extract energy from soft drinks such as iced tea and fruit juices. They explain that one milliliter would be enough to power a fuel cell for a month.

The biofuel cell comprises an anode and cathode modified with single-walled carbon nanohorns to boost electron transfer. A redox mediator and the enzyme glucose dehydrogenase coupled with co-factor NAD+ at the anode allow the system to oxidize glucose. Bilirubin oxidase at the cathode concomitantly reduces oxygen from the air to water. Together, they generate an electric current.

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