Iron Carbide Nanoparticles Encapsulated in Mesoporous Fe‐N‐Doped Carbon Nanofibers for Efficient Electrocatalysis
- 27 May 2015
- journal article
- research article
- Published by Wiley in Angewandte Chemie International Edition
- Vol. 54 (28) , 8179-8183
Abstract
Exploring low‐cost and high‐performance nonprecious metal catalysts (NPMCs) for oxygen reduction reaction (ORR) in fuel cells and metal–air batteries is crucial for the commercialization of these energy conversion and storage devices. Here we report a novel NPMC consisting of Fe3C nanoparticles encapsulated in mesoporous Fe‐N‐doped carbon nanofibers, which is synthesized by a cost‐effective method using carbonaceous nanofibers, pyrrole, and FeCl3 as precursors. The electrocatalyst exhibits outstanding ORR activity (onset potential of −0.02 V and half‐wave potential of −0.140 V) closely comparable to the state‐of‐the‐art Pt/C catalyst in alkaline media, and good ORR activity in acidic media, which is among the highest reported activities of NPMCs.Keywords
This publication has 47 references indexed in Scilit:
- Nanostructured Nonprecious Metal Catalysts for Oxygen Reduction ReactionAccounts of Chemical Research, 2013
- Active and stable carbon nanotube/nanoparticle composite electrocatalyst for oxygen reductionNature Communications, 2013
- High Performance Fe- and N- Doped Carbon Catalyst with Graphene Structure for Oxygen ReductionScientific Reports, 2013
- Macroscopic‐Scale Template Synthesis of Robust Carbonaceous Nanofiber Hydrogels and Aerogels and Their ApplicationsAngewandte Chemie International Edition, 2012
- Macroscopic‐Scale Template Synthesis of Robust Carbonaceous Nanofiber Hydrogels and Aerogels and Their ApplicationsAngewandte Chemie, 2012
- Co3O4 nanocrystals on graphene as a synergistic catalyst for oxygen reduction reactionNature Materials, 2011
- Recent advances in non-precious metal catalysis for oxygen-reduction reaction in polymer electrolyte fuelcellsEnergy & Environmental Science, 2010
- Iron-Based Catalysts with Improved Oxygen Reduction Activity in Polymer Electrolyte Fuel CellsScience, 2009
- Nitrogen-Doped Carbon Nanotube Arrays with High Electrocatalytic Activity for Oxygen ReductionScience, 2009
- Building better batteriesNature, 2008