Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 8, Issue 5, Pages 707-712Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2006.02.020
Keywords
oxygen reduction reaction (ORR); molybdenum nitride; proton exchange membrane fuel cells (PEMFCs); non-noble electrocatalyst; linear sweep voltammetry
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A novel non-noble electrocatalyst based on molybdenum nitride supported on carbon (Mo2N/C) prepared by temperature-programmed reaction (TPR) strategy was investigated as cathode electrocatalysts toward oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs). The catalyst structure was characterized via X-ray diffraction (XRD). The electrochemical behaviours of the catalyst were investigated by linear sweep voltammetry (LSV) and rotating disk electrode (RDE) measurements in 0.5 M H2SO4 solution. The reduction of oxygen in acid solution proceeds by an approximate four-electron pathway. The MO2N/C catalyst showed a comparatively good cell performance to oxygen reduction reaction (ORR) in PEMFCs and has proved to be a promising non-noble electrocatalysts for the alternative of platinum-based catalysts. (c) 2006 Elsevier B.V. All rights reserved.
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