Nanoporous molybdenum carbide wires as an active electrocatalyst towards the oxygen reduction reaction.

نویسندگان

  • Lei Liao
  • Xiaojun Bian
  • Jingjing Xiao
  • Baohong Liu
  • Micheál D Scanlon
  • Hubert H Girault
چکیده

A non-precious metal electrocatalyst has been developed for the oxygen reduction reaction based on nanoporous molybdenum carbide (nano-Mo2C) wires through a facile calcination of sub-nanometer periodic organic-inorganic hybrid nanowires. The highly dispersed Mo2C wires were composed of 10-15 nm nanocrystals with a mesopore size of 3.3 nm. The properties of nano-Mo2C wires were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction and N2 adsorption/desorption porosimetry. The highly active surface area and enriched nanoporosity for nano-Mo2C wires are unique features that make them a high-performance electrocatalyst for oxygen reduction in an alkaline medium. The electrocatalysis and reaction kinetics results show that nano-Mo2C-based materials can be developed as new catalysts with high activity at low cost for electrochemical energy conversion applications.

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عنوان ژورنال:
  • Physical chemistry chemical physics : PCCP

دوره 16 21  شماره 

صفحات  -

تاریخ انتشار 2014