Oxygen reduction highly active PtFe

Recent developments demonstrated the great potential of activated carbon as low-cost cathode material, which can be formed by cold pressing-activated carbon with a PTFE binder around a Ni mesh current collector. Such a cathode structure avoided the need for carbon cloth or a metal catalyst, and produced a cathode with high activity for oxygen reduction at typical MFC current densities [72]. Tests with the AC cathode produced a maximum power density of 1220 mW m , compared with 1060 mW m obtained by Pt-catalyzed carbon cloth cathode. Other carbon material, including activated carbon fiber felt [56] and HNOs-treated carbon powder (Vulcan XC-72R) [73], also demonstrated good performance for oxygen reduction reaction in MFCs. 

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