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One‐Pot Synthesis of Carbon‐Coated Nanostructured Iron Oxide on Few‐Layer Graphene for Lithium‐Ion Batteries
Author(s) -
Sun Zhenyu,
Madej Edyta,
Wiktor Christian,
Sinev Ilya,
Fischer Roland A.,
van Tendeloo Gustaaf,
Muhler Martin,
Schuhmann Wolfgang,
Ventosa Edgar
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201501935
Subject(s) - graphene , materials science , oxide , carbon fibers , electrochemistry , lithium (medication) , ferrocene , nanostructure , iron oxide , nanotechnology , graphene oxide paper , nanoparticle , pyrolysis , chemical engineering , electrode , inorganic chemistry , layer (electronics) , composite number , metallurgy , chemistry , composite material , medicine , endocrinology , engineering
Nanostructure engineering has been demonstrated to improve the electrochemical performance of iron oxide based electrodes in Li‐ion batteries (LIBs). However, the synthesis of advanced functional materials often requires multiple steps. Herein, we present a facile one‐pot synthesis of carbon‐coated nanostructured iron oxide on few‐layer graphene through high‐pressure pyrolysis of ferrocene in the presence of pristine graphene. The ferrocene precursor supplies both iron and carbon to form the carbon‐coated iron oxide, while the graphene acts as a high‐surface‐area anchor to achieve small metal oxide nanoparticles. When evaluated as a negative‐electrode material for LIBs, our composite showed improved electrochemical performance compared to commercial iron oxide nanopowders, especially at fast charge/discharge rates.