
90 Electrochemically Enabled Sustainability
The graphite fiber brush (graphite fibers wound around one or more con-
ductive corrosion-resistant metal wires) is considered to be the most prom-
ising anode material for future large-scale applications, due to its high
surface area, low electrode resistance and commercially abundant. Logan
etal. [91] reported a power density of up to 2400 mW m
−2
in a flat-type air-
cathode MFC with a graphite brush anode, four times that obtained with
carbon paper as the anode (600 mW m
−2
). Besides carbonaceous materials,
some non-corrosive metals, such as stainless steel and titanium, can also be
used an anode mater ...