Graphene: A promising electrode for microbial fuel cells


Jayesh M Sonawane

Microbial fuel cells (MFCs) are promising sustainable technology for electricity production from waste organic matter. The anode employed for this purpt ose plays a major role in the performance of the MFC system. The coating of grapheme on stainless steel has been investigated in this study for improving the performance of an anode in a MFC system. The use of graphene coating on a stainless steel (SS-316) plate produced a maximum power density of 201 mWm-2, while a bare stainless steel plate only gave a maximum power density of 100 mWm-2. The use of graphene coating on copper foil gave even higher

maximum power density of 262 mW/m-2. The maximum open circuit potentials observed were 0.95 V, 1.0 V and 1.12 V for SSanode, SS anode with graphene and copper foil with graphene, respectively. The system internal resistance of pristine stainless steel, grapheme-stainless steel and copper–graphene anodes were 43±4 Ω, 42±1 Ω and 36±5 Ω, respectively.


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