Electron Shuttling of Iron‐Oxygen‐Cobalt Bridging in Cobalt Assembled Iron Oxyhydroxide Catalyst Boosts the Urea Oxidation Stability and Activity
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 21, 2025
Abstract
Iron
(Fe)‐based
materials
hold
great
potential
as
urea
oxidation
reaction
(UOR)
catalysts,
however,
the
deactivation
of
active
Fe‐oxyhydroxide
(FeOOH)
species
induced
by
its
dissolution
during
catalytic
process
under
high
current
densities
is
still
significant
challenge.
Herein,
cobalt
(Co)
assembled
FeOOH
constructed,
and
formation
Iron‐Oxygen‐Cobalt
(Fe‐O‐Co)
bridging
triggers
electron
transfer
from
Co
to
Fe
sites.
This
shuttling
induces
low
valence
state
sites
in
FeOOH.
Co‐FeOOH
catalyst
achieves
a
density
1000
mA
cm
−2
at
voltage
merely
1.59
V,
showing
substantial
improvement
compared
pure
(1.97
V).
Meanwhile,
urea‐assisted
anion
exchange
membrane
electrolyzer,
after
24
h
continuous
operation
,
fluctuation
12.4%,
significantly
lower
than
that
(49.9%).
The
situ
experiments
theoretical
calculations
demonstrate
Fe‐O‐Co
endows
suppressive
Fe‐segregation,
fast
charge
Fe(Co)OOH
phase
negative‐shifted
d‐band
center
metal
sites,
boosting
UOR
stability
activity.
Язык: Английский
Hydrogen production from water electrolysis coupled with ethanol oxidation by membrane electrolyzer combined flow-through and fed-batch operation
Fuel,
Год журнала:
2025,
Номер
397, С. 135380 - 135380
Опубликована: Апрель 17, 2025
Язык: Английский
Interfacial lattice strain and electronic transfer induced by lignin-derived carbon coupled with Ni-Mn2Mo3O8 heterojunction for improving industrial-level urea electrolysis
Applied Catalysis B Environment and Energy,
Год журнала:
2025,
Номер
unknown, С. 125465 - 125465
Опубликована: Май 1, 2025
Язык: Английский
Electrochemical Cell Designs for Efficient Carbon Dioxide Reduction and Water Electrolysis: Status and Perspectives
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 30, 2025
Abstract
Integrating
renewable
electricity
and
concentrated
CO
2
from
direct
air
capture,
electrochemical
reduction
reactions
(eCO
RR)
offer
a
promising
pathway
for
converting
into
fuel
chemicals,
enabling
the
closure
of
carbon
loop
in
sustainable
manner.
The
clean
H
produced
via
hydrogen
evolution
reaction
(HER)
during
water
electrolysis
can
replace
traditional
fossil
fuels
without
additional
emissions.
Achieving
large‐scale
high‐efficiency
eCO
RR
HER
requires
development
rational
electrolyzer
designs,
which
are
crucial
industrial
implementation.
This
review
examines
recent
innovations
system
designs
RR,
HER,
latest
advances
situ
cell
operando
characterization
reactions.
It
focuses
on
improvements
flow
patterns,
membrane
electrode
assemblies,
electrolyte
engineering
to
maximize
catalytic
activities
at
level.
Besides,
discusses
optimizing
counter‐anodic
improve
energy
efficiency
electrolysis,
offering
insights
design
systems
with
efficient
utilization.
Furthermore,
it
explores
integration
other
(e.g.,
cells),
highlighting
their
potential
role
decarbonization
future
processes.
Finally,
summary,
challenge,
outlook
industrial‐scale
concluded.
Язык: Английский