Novel single step electrochemical route to γ-MnO2 nanoparticle-coated polyaniline nanofibers:: Thermal stability and formic acid oxidation on the resulting nanocomposites

gamma-MnO2 nanoparticles-coated polyaniline (PANI) nanofibers on carbon electrode were prepared by potentiodynamic electrochemical deposition of PANI and MnO2 from a single pot. Higher thermal stability of the resulting nanocomposites and their activity for formic acid oxidation permits the realization of a platinum-free anode for formic acid fuel cells. (C) 2008 Elsevier B.V. All rights reserved.