Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 21, 2025
Abstract
Engineering
the
electronic
configuration
and
intermediates
adsorption
behaviors
of
Platinum‐based
catalysts
is
crucial
for
improving
oxygen
reduction
reaction
(ORR)
kinetics
at
cathode
in
proton
exchange
membrane
fuel
cells
(PEMFCs),
yet
it
remains
an
enormous
challenge.
Herein,
interface‐induced
dislocation
tactic
through
Pt/PtCu
heterogeneous
formation
Pt@PtCu
nanowires
composites
(Pt@PtCu
NWs)
efficient
ORR
reported.
Theoretical
studies
have
proven
that
driven
by
a
hybrid
interface
could
alter
electron
redistribution
downshift
d‐band
Pt,
thus
facilitating
desorption
oxygen‐containing
species
achieving
outstanding
performance.
Specifically,
as‐prepared
NWs
deliver
exceptional
properties
with
half‐wave
0.940
V.
Moreover,
mass
activity
(MA)
reaches
1.17
A
mg
Pt
−1
0.9
V,
which
4.18
10.64
times
higher
than
(0.27
)
commercial
Pt/C
(0.11
).
Most
importantly,
also
prove
remarkable
structural
stability
only
14.5%
decrease
MA
compared
to
58.9%
after
durability
test.
Overall,
this
strategy
center
tuning
induced
hybrid‐interface‐driven
provides
promising
avenue
designing
high‐efficiency
electrocatalysts.
ACS Applied Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 15, 2025
The
Fe–N4-based
Fe
single-atom
catalyst
exhibits
high
efficiency
in
oxygen
reduction
reaction
(ORR)
activity,
while
Co
oxides
demonstrate
excellent
evolution
(OER)
activity.
In
this
study,
we
report
an
easily
synthesized
carbon-based
CoFe@CNT
that
incorporates
both
single
atoms
and
CoO
nanoparticles.
This
is
derived
from
a
two-dimensional
metalloporphyrin-based
metal–organic
framework
(CoFeMOF)
composed
of
FeTCPP
(5,10,15,20-tetrakis(p-carboxylphenyl)porphyrin
iron)
building
unit
coordinated
with
Co2+
4,4′-bipyridine.
superior
ORR
(half-wave
potential
=
0.85
V)
OER
(overpotential
at
10
mA
cm–2
370
mV)
performances
better
stability
compared
to
ZnFe@CNT
Co@CNT
(from
the
respective
ZnFeMOF
CoMOF
precursors)
commercial
Pt/C
catalysts.
XPS
analysis
reveals
presence
Fe–N4
nanoparticles
not
only
induces
electron
transfer
but
also
generates
higher
combined
content
pyridinic
N
Co@CNT,
which
enhances
catalytic
A
Zn–air
battery
using
as
cathode
achieves
power
density
(115
mW
cm–2),
outperforming
catalyst.
design
synthesis
2D
MOF-derived
electrocatalyst
offer
promising
prospects
for
developing
high-density
metal–air
batteries.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 21, 2025
Abstract
Engineering
the
electronic
configuration
and
intermediates
adsorption
behaviors
of
Platinum‐based
catalysts
is
crucial
for
improving
oxygen
reduction
reaction
(ORR)
kinetics
at
cathode
in
proton
exchange
membrane
fuel
cells
(PEMFCs),
yet
it
remains
an
enormous
challenge.
Herein,
interface‐induced
dislocation
tactic
through
Pt/PtCu
heterogeneous
formation
Pt@PtCu
nanowires
composites
(Pt@PtCu
NWs)
efficient
ORR
reported.
Theoretical
studies
have
proven
that
driven
by
a
hybrid
interface
could
alter
electron
redistribution
downshift
d‐band
Pt,
thus
facilitating
desorption
oxygen‐containing
species
achieving
outstanding
performance.
Specifically,
as‐prepared
NWs
deliver
exceptional
properties
with
half‐wave
0.940
V.
Moreover,
mass
activity
(MA)
reaches
1.17
A
mg
Pt
−1
0.9
V,
which
4.18
10.64
times
higher
than
(0.27
)
commercial
Pt/C
(0.11
).
Most
importantly,
also
prove
remarkable
structural
stability
only
14.5%
decrease
MA
compared
to
58.9%
after
durability
test.
Overall,
this
strategy
center
tuning
induced
hybrid‐interface‐driven
provides
promising
avenue
designing
high‐efficiency
electrocatalysts.
