Fig. 3.

Electrochemical characterisation of the mature SSM-MFCs. a) Overall polarisation of the SSM-MFCs from OCV. The Voltage-current polarisation curves are shown by empty circles whilst the power-current curves are illustrated by plain circles. b) Potential-current polarisation curves of the cathodes. c) Potential-current polarisation curves of the anodes. The curves are the average of each condition duplicates and the error bars stand for the values range. Green, red and blue curves stand for the 1 cm, 2 cm and 3 cm conditions, respectively conditions A, B and C. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)