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Graphene‐based Oxygen Reduction Electrodes for Low Temperature Solid Oxide Fuel Cells
Author(s) -
Jee Y.,
Karimaghaloo A.,
Andrade A. Macedo,
Moon H.,
Li Y.,
Han J.W.,
Ji S.,
Ishihara H.,
Su P.C.,
Cha S. W.,
Tung V. C.,
Lee M. H.
Publication year - 2017
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.201600169
Subject(s) - graphene , materials science , oxide , electrode , electrochemistry , chemical engineering , carbon fibers , graphene foam , atmospheric temperature range , doping , hydrothermal circulation , nitrogen , nanotechnology , graphene oxide paper , composite material , optoelectronics , chemistry , composite number , metallurgy , organic chemistry , physics , meteorology , engineering
In this report, we present a study of using nitrogen‐doped graphene as the air electrode of low temperature solid oxide fuel cells (LT‐SOFCs) operating at 350 °C or lower. Three graphene derivatives were prepared through hydrothermal reactions and their electrochemical performance and material properties were characterized in the temperature range of 225–350 °C in atmospheric air. Nitrogen‐doped graphene was found to exhibit a decent air electrode performance comparable to a porous Pt electrode aged for 8 h at 350 °C, but only for a limited time. After ∼10 h of operation at 350 °C, the electrode performance degraded significantly due to carbon oxidation. However, alternative routes of synthesizing/doping graphene derivatives are expected to improve the viability of using these materials as a practical high temperature air electrode.