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@ARTICLE{Yan:888457,
author = {Yan, Ning and Liu, Fan and Guangqi, Zhu and Luxia, Bu and
Liu, Zigeng and Wang, Wei},
title = {{M}orphology and {S}tructure {C}ontrols of {S}ingle-atom
{F}e-{N}-{C} {C}atalysts {S}ynthesized {U}sing {F}e{P}c
{P}owders as the {P}recursor},
journal = {Processes},
volume = {9},
number = {1},
issn = {2227-9717},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2020-04925},
pages = {109 -},
year = {2021},
abstract = {Understanding the origin of the high electrocatalytic
activity of Fe–N–C electrocatalysts for oxygen reduction
reaction is critical but still challenging for developing
efficient sustainable nonprecious metal catalysts used in
fuel cells. Although there are plenty of papers concerning
the morphology on the surface Fe–N–C catalysts, there is
very little work discussing how temperature and pressure
control the growth of nanoparticles. In our lab, a unique
organic vapor deposition technology was developed to
investigate the effect of the temperature and pressure on
catalysts. The results indicated that synthesized catalysts
exhibited three kinds of morphology—nanorods, nanofibers,
and nanogranules—corresponding to different synthesis
processes. The growth of the crystal is the root cause of
the difference in the surface morphology of the catalyst,
which can reasonably explain the effect of the temperature
and pressure. The oxygen reduction reaction current
densities of the different catalysts at potential 0.88 V
increased in the following order: FePc (1.04 mA/cm2) < Pt/C
catalyst (1.54 mA/cm2) ≈ Fe–N–C-f catalyst (1.64
mA/cm2) < Fe–N–C-g catalyst (2.12 mA/cm2) < Fe–N–C-r
catalyst (2.35 mA/cm2). By changing the morphology of the
catalyst surface, this study proved that the higher
performance of the catalysts can be obtained},
cin = {IEK-9},
ddc = {570},
cid = {I:(DE-Juel1)IEK-9-20110218},
pnm = {1223 - Batteries in Application (POF4-122)},
pid = {G:(DE-HGF)POF4-1223},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000610751900001},
doi = {10.3390/pr9010109},
url = {https://juser.fz-juelich.de/record/888457},
}