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Biobatteries catch breath
Date:3/7/2013

takes place. Carbon nanotubes facilitate transport of electrons from the surface of the semipermeable membrane.

A cell with the new biocathode is able to supply power with a voltage of 1.6 V, for a minimum one and a half of a week. The cell efficiency decreases with time, likely because of gradual deactivation of the enzyme on the biocathode. "Here not everything is dependent on us, but on the progress in biotechnology. The lifetime of a biofuel cells with our biocathode could be significantly prolonged, if the enzyme regeneration processes are successfully developed", says Dr Jnsson-Niedziłka.

In the experiments carried out so far, a stack of four batteries connected in series successfully powered a lamp composed of two LEDs. Before, however, the biofuel cells based on the design developed at the IPC PAS get popularised, the researchers must solve the problem of relatively low electric power that is common to all types of biofuel cells.

The research presented here is important not only in view of the miniaturisation of power supply sources for medical implants, biosensors or light-emitting tattoos. The processes responsible for electricity generation in biofuel cells are potentially suitable for use in electric power generation in a larger scale. The limiting factors here are the properties of the enzymes, so that further advancement in this area is essentially dependent on the development of the biotechnology.


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Contact: Marcin Opallo
mopallo@ichf.edu.pl
Institute of Physical Chemistry of the Polish Academy of Sciences
Source:Eurekalert  

Page: 1 2 3

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