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Direct Synthesis of Fe 3 C‐Functionalized Graphene by High Temperature Autoclave Pyrolysis for Oxygen Reduction
Author(s) -
Hu Yang,
Jensen Jens Oluf,
Zhang Wei,
Huang Yunjie,
Cleemann Lars N.,
Xing Wei,
Bjerrum Niels J.,
Li Qingfeng
Publication year - 2014
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201402183
Subject(s) - graphene , electrocatalyst , autoclave , pyrolysis , catalysis , materials science , chemical engineering , substrate (aquarium) , oxygen , nanoparticle , hydrogen , electrode , inorganic chemistry , chemistry , nanotechnology , electrochemistry , organic chemistry , metallurgy , oceanography , geology , engineering
We present a novel approach to direct fabrication of few‐layer graphene sheets with encapsulated Fe 3 C nanoparticles from pyrolysis of volatile non‐graphitic precursors without any substrate. This one‐step autoclave approach is facile and potentially scalable for production. Tested as an electrocatalyst, the graphene‐based composite exhibited excellent catalytic activity towards the oxygen reduction reaction in alkaline solution with an onset potential of ca. 1.05 V (vs. the reversible hydrogen electrode) and a half‐wave potential of 0.83 V, which is comparable to the commercial Pt/C catalyst.