Use of an oxygen gas diffusion cathode and a three-dimensional packed bed anode in a bioelectrochemical fuel cell

An oxygen gas diffusion electrode was successfully used as a cathode in a bioelectro-chemical fuel cell with 2-hydroxy-1,4-naphthoquinone as redox-mediator and Escherichia coli as biocatalyst. On addition of bacteria to the anode compartment of the fuel cell a rapid increase in the electricity output was observed. With the use of a three-dimensional packed bed anode the electricity output of the cell could be considerably increased.