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CNT– CeO2 Modified Anode in a Microbial Fuel Cell System

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CNT– CeO2 Modified Anode in a Microbial Fuel Cell System

Il comportamento di tre diversi tipi di anodi a base di carbonio sono stati investigati in questo lavoro per potenziare celle a combustible microbiche: i) fibra di carbonio, ii) nanotubi di carbonio iii) la stessa fibra arricchita di nanotubi e drogata con nanopolveri di CeO2.

The behavior of three different types of carbon based anodes: carbon cloth, conductive coating enriched with carbon nanotubes (CTN) and the same coating doped with nanopowder of CeO2 in boosting the performance of single chamber microbial fuel cells are comparatively studied in this work.Despite higher surface area of CNT, cells with carbon cloth anode have slightly higher current trend.

Power curves represented in Fig. 1 b are in agreement with such results: cells with dispersed cerium oxide on the anode is showing the highest power and current, cells with carbon nanotubes painted on carbon cloth has a weaker performance compare to bare carbon cloth. Such behavior could be attributed to the presence of polyurethane binder in CNT paint. It probably inhibits the electrochemical charge transfer on the surface of anode and lowers the overall performance of the cell, implying an underestimated potentiality of cerium dioxide.

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