Nano-Micro Letters,
Journal Year:
2025,
Volume and Issue:
17(1)
Published: March 13, 2025
Abstract
The
state-of-the-art
anion-exchange
membrane
water
electrolyzers
(AEMWEs)
require
highly
stable
electrodes
for
prolonged
operation.
stability
of
the
electrode
is
closely
linked
to
effective
evacuation
H
2
or
O
gas
generated
from
surface
during
electrolysis.
In
this
study,
we
prepared
a
super-hydrophilic
by
depositing
porous
nickel–iron
nanoparticles
on
annealed
TiO
nanotubes
(NiFe/ATNT)
rapid
outgassing
such
nonpolar
gases.
NiFe/ATNT
exhibited
an
overpotential
235
mV
at
10
mA
cm
−2
oxygen
evolution
reaction
in
1.0
M
KOH
solution,
and
was
utilized
as
anode
AEMWE
achieve
current
density
1.67
A
1.80
V.
addition,
with
electrode,
which
enables
outgassing,
showed
record
1500
h
0.50
under
harsh
temperature
conditions
80
±
3
°C.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 23, 2024
Abstract
Ruthenium
oxide
(RuO
2
)
is
considered
one
of
the
most
promising
catalysts
for
replacing
iridium
(IrO
in
acidic
oxygen
evolution
reaction
(OER).
Nevertheless,
performance
RuO
remains
unacceptable
due
to
dissolution
Ru
and
lack
*OH
environments.
This
paper
reports
a
grain
boundary
(GB)‐rich
porous
electrocatalyst
efficient
stable
OER.
The
involvement
GB
regulates
valence
state
weakens
interaction
between
O,
effectively
facilitating
adsorption
*OOH
formation.
Notably,
achieved
record‐high
catalytic
activity
(145
mV
at
10
mA
cm
−2
with
low
Tafel
slope
(40.9
dec
−1
remarkable
mass
332
mg
1.5
V
versus
reversible
hydrogen
electrode
achieved.
Additionally,
exhibits
superb
stability
an
ultra‐low
degradation
rate
26
µV
h
over
50‐day
durability
test.
study
opens
viable
pathway
development
robust
Ru‐based
OER
electrocatalysts.