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@ARTICLE{Elumeeva:810769,
author = {Elumeeva, Karina and Masa, Justus and Sierau, Jennyfer and
Tietz, Frank and Muhler, Martin and Schuhmann, Wolfgang},
title = {{P}erovskite-based bifunctional electrocatalysts for oxygen
evolution and oxygen reduction in alkaline electrolytes},
journal = {Electrochimica acta},
volume = {208},
issn = {0013-4686},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2016-03358},
pages = {25 - 32},
year = {2016},
abstract = {Due to the high cost of precious metal-based
electrocatalysts for oxygen reduction and oxygen evolution,
the development of alternative low cost and efficient
catalysts is of high importance for energy storage and
conversion technologies. Although non-precious catalysts
that can efficiently catalyze oxygen reduction and oxygen
evolution have been developed, electrocatalysts with high
bifunctional activity for both oxygen evolution and
reduction are needed. Perovskites based on modified
lanthanum cobaltite possess significant activity for the
oxygen evolution reaction. We describe the synthesis of a
bifunctional oxygen electrode with simultaneous activity for
the oxygen evolution reaction (OER) and the oxygen reduction
reaction (ORR) in alkaline media by direct growth of
nitrogen-doped carbon nanotubes on the surface of a
perovskite containing Co and Fe by means of chemical vapor
deposition. The difference in the overvoltage between ORR
(at 1 mA/cm2) and OER (at 10 mA/cm2) was below 880 mV in 0.1
M KOH. The formation of H2O2 during the ORR was reduced by
at least three fold when using the bifunctional catalyst as
compared to the non-modified perovskite. Long-term
durability tests indicate stable performance for at least 37
h during the OER and 23 h during the ORR.},
cin = {IEK-1},
ddc = {540},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {131 - Electrochemical Storage (POF3-131) / 134 -
Electrolysis and Hydrogen (POF3-134)},
pid = {G:(DE-HGF)POF3-131 / G:(DE-HGF)POF3-134},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000377545300004},
doi = {10.1016/j.electacta.2016.05.010},
url = {https://juser.fz-juelich.de/record/810769},
}