4. Conclusion
In this study, Mn–Co oxides with different atomic ratio of Mn
and Co were examined in order to replace platinum as the cathodic
catalyst in MFCs application. From the experimental results, there
were three major conclusions drawn:
First, increasing the Mn content enhanced power generation
due to the increase in BET surface area.
Second, compared with a platinum catalyst, the Mn–Co oxide
catalyst catalysts showed good activity toward oxygen reduction
in neutral media.
Third, since the cost of Mn–Co oxide is expected to be just a
fraction (1/10) of that of Pt, the Mn–Co oxide catalysts tested in
this study exhibited a great potential to replace platinum as a cathode
catalyst for MFC applications.
Appendix A. Supplementary data
Supplementary data associated with this article can be found, in
the online version, at doi:10.1016/j.biortech.2011.08.123.